Initial commit: igny8 project

backend/.venv/lib/python3.12/site-packages/redis/__init__.py

@@ -0,0 +1,88 @@
+from redis import asyncio  # noqa
+from redis.backoff import default_backoff
+from redis.client import Redis, StrictRedis
+from redis.cluster import RedisCluster
+from redis.connection import (
+    BlockingConnectionPool,
+    Connection,
+    ConnectionPool,
+    SSLConnection,
+    UnixDomainSocketConnection,
+)
+from redis.credentials import CredentialProvider, UsernamePasswordCredentialProvider
+from redis.exceptions import (
+    AuthenticationError,
+    AuthenticationWrongNumberOfArgsError,
+    BusyLoadingError,
+    ChildDeadlockedError,
+    ConnectionError,
+    CrossSlotTransactionError,
+    DataError,
+    InvalidPipelineStack,
+    InvalidResponse,
+    MaxConnectionsError,
+    OutOfMemoryError,
+    PubSubError,
+    ReadOnlyError,
+    RedisClusterException,
+    RedisError,
+    ResponseError,
+    TimeoutError,
+    WatchError,
+)
+from redis.sentinel import (
+    Sentinel,
+    SentinelConnectionPool,
+    SentinelManagedConnection,
+    SentinelManagedSSLConnection,
+)
+from redis.utils import from_url
+
+
+def int_or_str(value):
+    try:
+        return int(value)
+    except ValueError:
+        return value
+
+
+__version__ = "7.0.1"
+VERSION = tuple(map(int_or_str, __version__.split(".")))
+
+
+__all__ = [
+    "AuthenticationError",
+    "AuthenticationWrongNumberOfArgsError",
+    "BlockingConnectionPool",
+    "BusyLoadingError",
+    "ChildDeadlockedError",
+    "Connection",
+    "ConnectionError",
+    "ConnectionPool",
+    "CredentialProvider",
+    "CrossSlotTransactionError",
+    "DataError",
+    "from_url",
+    "default_backoff",
+    "InvalidPipelineStack",
+    "InvalidResponse",
+    "MaxConnectionsError",
+    "OutOfMemoryError",
+    "PubSubError",
+    "ReadOnlyError",
+    "Redis",
+    "RedisCluster",
+    "RedisClusterException",
+    "RedisError",
+    "ResponseError",
+    "Sentinel",
+    "SentinelConnectionPool",
+    "SentinelManagedConnection",
+    "SentinelManagedSSLConnection",
+    "SSLConnection",
+    "UsernamePasswordCredentialProvider",
+    "StrictRedis",
+    "TimeoutError",
+    "UnixDomainSocketConnection",
+    "WatchError",
+]

backend/.venv/lib/python3.12/site-packages/redis/_parsers/__init__.py

@@ -0,0 +1,27 @@
+from .base import (
+    AsyncPushNotificationsParser,
+    BaseParser,
+    PushNotificationsParser,
+    _AsyncRESPBase,
+)
+from .commands import AsyncCommandsParser, CommandsParser
+from .encoders import Encoder
+from .hiredis import _AsyncHiredisParser, _HiredisParser
+from .resp2 import _AsyncRESP2Parser, _RESP2Parser
+from .resp3 import _AsyncRESP3Parser, _RESP3Parser
+
+__all__ = [
+    "AsyncCommandsParser",
+    "_AsyncHiredisParser",
+    "_AsyncRESPBase",
+    "_AsyncRESP2Parser",
+    "_AsyncRESP3Parser",
+    "AsyncPushNotificationsParser",
+    "CommandsParser",
+    "Encoder",
+    "BaseParser",
+    "_HiredisParser",
+    "_RESP2Parser",
+    "_RESP3Parser",
+    "PushNotificationsParser",
+]

backend/.venv/lib/python3.12/site-packages/redis/_parsers/base.py

@@ -0,0 +1,474 @@
+import logging
+import sys
+from abc import ABC
+from asyncio import IncompleteReadError, StreamReader, TimeoutError
+from typing import Awaitable, Callable, List, Optional, Protocol, Union
+
+from redis.maint_notifications import (
+    MaintenanceNotification,
+    NodeFailedOverNotification,
+    NodeFailingOverNotification,
+    NodeMigratedNotification,
+    NodeMigratingNotification,
+    NodeMovingNotification,
+)
+
+if sys.version_info.major >= 3 and sys.version_info.minor >= 11:
+    from asyncio import timeout as async_timeout
+else:
+    from async_timeout import timeout as async_timeout
+
+from ..exceptions import (
+    AskError,
+    AuthenticationError,
+    AuthenticationWrongNumberOfArgsError,
+    BusyLoadingError,
+    ClusterCrossSlotError,
+    ClusterDownError,
+    ConnectionError,
+    ExecAbortError,
+    ExternalAuthProviderError,
+    MasterDownError,
+    ModuleError,
+    MovedError,
+    NoPermissionError,
+    NoScriptError,
+    OutOfMemoryError,
+    ReadOnlyError,
+    RedisError,
+    ResponseError,
+    TryAgainError,
+)
+from ..typing import EncodableT
+from .encoders import Encoder
+from .socket import SERVER_CLOSED_CONNECTION_ERROR, SocketBuffer
+
+MODULE_LOAD_ERROR = "Error loading the extension. Please check the server logs."
+NO_SUCH_MODULE_ERROR = "Error unloading module: no such module with that name"
+MODULE_UNLOAD_NOT_POSSIBLE_ERROR = "Error unloading module: operation not possible."
+MODULE_EXPORTS_DATA_TYPES_ERROR = (
+    "Error unloading module: the module "
+    "exports one or more module-side data "
+    "types, can't unload"
+)
+# user send an AUTH cmd to a server without authorization configured
+NO_AUTH_SET_ERROR = {
+    # Redis >= 6.0
+    "AUTH <password> called without any password "
+    "configured for the default user. Are you sure "
+    "your configuration is correct?": AuthenticationError,
+    # Redis < 6.0
+    "Client sent AUTH, but no password is set": AuthenticationError,
+}
+
+EXTERNAL_AUTH_PROVIDER_ERROR = {
+    "problem with LDAP service": ExternalAuthProviderError,
+}
+
+logger = logging.getLogger(__name__)
+
+
+class BaseParser(ABC):
+    EXCEPTION_CLASSES = {
+        "ERR": {
+            "max number of clients reached": ConnectionError,
+            "invalid password": AuthenticationError,
+            # some Redis server versions report invalid command syntax
+            # in lowercase
+            "wrong number of arguments "
+            "for 'auth' command": AuthenticationWrongNumberOfArgsError,
+            # some Redis server versions report invalid command syntax
+            # in uppercase
+            "wrong number of arguments "
+            "for 'AUTH' command": AuthenticationWrongNumberOfArgsError,
+            MODULE_LOAD_ERROR: ModuleError,
+            MODULE_EXPORTS_DATA_TYPES_ERROR: ModuleError,
+            NO_SUCH_MODULE_ERROR: ModuleError,
+            MODULE_UNLOAD_NOT_POSSIBLE_ERROR: ModuleError,
+            **NO_AUTH_SET_ERROR,
+            **EXTERNAL_AUTH_PROVIDER_ERROR,
+        },
+        "OOM": OutOfMemoryError,
+        "WRONGPASS": AuthenticationError,
+        "EXECABORT": ExecAbortError,
+        "LOADING": BusyLoadingError,
+        "NOSCRIPT": NoScriptError,
+        "READONLY": ReadOnlyError,
+        "NOAUTH": AuthenticationError,
+        "NOPERM": NoPermissionError,
+        "ASK": AskError,
+        "TRYAGAIN": TryAgainError,
+        "MOVED": MovedError,
+        "CLUSTERDOWN": ClusterDownError,
+        "CROSSSLOT": ClusterCrossSlotError,
+        "MASTERDOWN": MasterDownError,
+    }
+
+    @classmethod
+    def parse_error(cls, response):
+        "Parse an error response"
+        error_code = response.split(" ")[0]
+        if error_code in cls.EXCEPTION_CLASSES:
+            response = response[len(error_code) + 1 :]
+            exception_class = cls.EXCEPTION_CLASSES[error_code]
+            if isinstance(exception_class, dict):
+                exception_class = exception_class.get(response, ResponseError)
+            return exception_class(response)
+        return ResponseError(response)
+
+    def on_disconnect(self):
+        raise NotImplementedError()
+
+    def on_connect(self, connection):
+        raise NotImplementedError()
+
+
+class _RESPBase(BaseParser):
+    """Base class for sync-based resp parsing"""
+
+    def __init__(self, socket_read_size):
+        self.socket_read_size = socket_read_size
+        self.encoder = None
+        self._sock = None
+        self._buffer = None
+
+    def __del__(self):
+        try:
+            self.on_disconnect()
+        except Exception:
+            pass
+
+    def on_connect(self, connection):
+        "Called when the socket connects"
+        self._sock = connection._sock
+        self._buffer = SocketBuffer(
+            self._sock, self.socket_read_size, connection.socket_timeout
+        )
+        self.encoder = connection.encoder
+
+    def on_disconnect(self):
+        "Called when the socket disconnects"
+        self._sock = None
+        if self._buffer is not None:
+            self._buffer.close()
+            self._buffer = None
+        self.encoder = None
+
+    def can_read(self, timeout):
+        return self._buffer and self._buffer.can_read(timeout)
+
+
+class AsyncBaseParser(BaseParser):
+    """Base parsing class for the python-backed async parser"""
+
+    __slots__ = "_stream", "_read_size"
+
+    def __init__(self, socket_read_size: int):
+        self._stream: Optional[StreamReader] = None
+        self._read_size = socket_read_size
+
+    async def can_read_destructive(self) -> bool:
+        raise NotImplementedError()
+
+    async def read_response(
+        self, disable_decoding: bool = False
+    ) -> Union[EncodableT, ResponseError, None, List[EncodableT]]:
+        raise NotImplementedError()
+
+
+class MaintenanceNotificationsParser:
+    """Protocol defining maintenance push notification parsing functionality"""
+
+    @staticmethod
+    def parse_maintenance_start_msg(response, notification_type):
+        # Expected message format is: <notification_type> <seq_number> <time>
+        id = response[1]
+        ttl = response[2]
+        return notification_type(id, ttl)
+
+    @staticmethod
+    def parse_maintenance_completed_msg(response, notification_type):
+        # Expected message format is: <notification_type> <seq_number>
+        id = response[1]
+        return notification_type(id)
+
+    @staticmethod
+    def parse_moving_msg(response):
+        # Expected message format is: MOVING <seq_number> <time> <endpoint>
+        id = response[1]
+        ttl = response[2]
+        if response[3] is None:
+            host, port = None, None
+        else:
+            value = response[3]
+            if isinstance(value, bytes):
+                value = value.decode()
+            host, port = value.split(":")
+            port = int(port) if port is not None else None
+
+        return NodeMovingNotification(id, host, port, ttl)
+
+
+_INVALIDATION_MESSAGE = "invalidate"
+_MOVING_MESSAGE = "MOVING"
+_MIGRATING_MESSAGE = "MIGRATING"
+_MIGRATED_MESSAGE = "MIGRATED"
+_FAILING_OVER_MESSAGE = "FAILING_OVER"
+_FAILED_OVER_MESSAGE = "FAILED_OVER"
+
+_MAINTENANCE_MESSAGES = (
+    _MIGRATING_MESSAGE,
+    _MIGRATED_MESSAGE,
+    _FAILING_OVER_MESSAGE,
+    _FAILED_OVER_MESSAGE,
+)
+
+MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING: dict[
+    str, tuple[type[MaintenanceNotification], Callable]
+] = {
+    _MIGRATING_MESSAGE: (
+        NodeMigratingNotification,
+        MaintenanceNotificationsParser.parse_maintenance_start_msg,
+    ),
+    _MIGRATED_MESSAGE: (
+        NodeMigratedNotification,
+        MaintenanceNotificationsParser.parse_maintenance_completed_msg,
+    ),
+    _FAILING_OVER_MESSAGE: (
+        NodeFailingOverNotification,
+        MaintenanceNotificationsParser.parse_maintenance_start_msg,
+    ),
+    _FAILED_OVER_MESSAGE: (
+        NodeFailedOverNotification,
+        MaintenanceNotificationsParser.parse_maintenance_completed_msg,
+    ),
+    _MOVING_MESSAGE: (
+        NodeMovingNotification,
+        MaintenanceNotificationsParser.parse_moving_msg,
+    ),
+}
+
+
+class PushNotificationsParser(Protocol):
+    """Protocol defining RESP3-specific parsing functionality"""
+
+    pubsub_push_handler_func: Callable
+    invalidation_push_handler_func: Optional[Callable] = None
+    node_moving_push_handler_func: Optional[Callable] = None
+    maintenance_push_handler_func: Optional[Callable] = None
+
+    def handle_pubsub_push_response(self, response):
+        """Handle pubsub push responses"""
+        raise NotImplementedError()
+
+    def handle_push_response(self, response, **kwargs):
+        msg_type = response[0]
+        if isinstance(msg_type, bytes):
+            msg_type = msg_type.decode()
+
+        if msg_type not in (
+            _INVALIDATION_MESSAGE,
+            *_MAINTENANCE_MESSAGES,
+            _MOVING_MESSAGE,
+        ):
+            return self.pubsub_push_handler_func(response)
+
+        try:
+            if (
+                msg_type == _INVALIDATION_MESSAGE
+                and self.invalidation_push_handler_func
+            ):
+                return self.invalidation_push_handler_func(response)
+
+            if msg_type == _MOVING_MESSAGE and self.node_moving_push_handler_func:
+                parser_function = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][1]
+
+                notification = parser_function(response)
+                return self.node_moving_push_handler_func(notification)
+
+            if msg_type in _MAINTENANCE_MESSAGES and self.maintenance_push_handler_func:
+                parser_function = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][1]
+                notification_type = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][0]
+                notification = parser_function(response, notification_type)
+
+                if notification is not None:
+                    return self.maintenance_push_handler_func(notification)
+        except Exception as e:
+            logger.error(
+                "Error handling {} message ({}): {}".format(msg_type, response, e)
+            )
+
+        return None
+
+    def set_pubsub_push_handler(self, pubsub_push_handler_func):
+        self.pubsub_push_handler_func = pubsub_push_handler_func
+
+    def set_invalidation_push_handler(self, invalidation_push_handler_func):
+        self.invalidation_push_handler_func = invalidation_push_handler_func
+
+    def set_node_moving_push_handler(self, node_moving_push_handler_func):
+        self.node_moving_push_handler_func = node_moving_push_handler_func
+
+    def set_maintenance_push_handler(self, maintenance_push_handler_func):
+        self.maintenance_push_handler_func = maintenance_push_handler_func
+
+
+class AsyncPushNotificationsParser(Protocol):
+    """Protocol defining async RESP3-specific parsing functionality"""
+
+    pubsub_push_handler_func: Callable
+    invalidation_push_handler_func: Optional[Callable] = None
+    node_moving_push_handler_func: Optional[Callable[..., Awaitable[None]]] = None
+    maintenance_push_handler_func: Optional[Callable[..., Awaitable[None]]] = None
+
+    async def handle_pubsub_push_response(self, response):
+        """Handle pubsub push responses asynchronously"""
+        raise NotImplementedError()
+
+    async def handle_push_response(self, response, **kwargs):
+        """Handle push responses asynchronously"""
+
+        msg_type = response[0]
+        if isinstance(msg_type, bytes):
+            msg_type = msg_type.decode()
+
+        if msg_type not in (
+            _INVALIDATION_MESSAGE,
+            *_MAINTENANCE_MESSAGES,
+            _MOVING_MESSAGE,
+        ):
+            return await self.pubsub_push_handler_func(response)
+
+        try:
+            if (
+                msg_type == _INVALIDATION_MESSAGE
+                and self.invalidation_push_handler_func
+            ):
+                return await self.invalidation_push_handler_func(response)
+
+            if isinstance(msg_type, bytes):
+                msg_type = msg_type.decode()
+
+            if msg_type == _MOVING_MESSAGE and self.node_moving_push_handler_func:
+                parser_function = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][1]
+                notification = parser_function(response)
+                return await self.node_moving_push_handler_func(notification)
+
+            if msg_type in _MAINTENANCE_MESSAGES and self.maintenance_push_handler_func:
+                parser_function = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][1]
+                notification_type = MSG_TYPE_TO_MAINT_NOTIFICATION_PARSER_MAPPING[
+                    msg_type
+                ][0]
+                notification = parser_function(response, notification_type)
+
+                if notification is not None:
+                    return await self.maintenance_push_handler_func(notification)
+        except Exception as e:
+            logger.error(
+                "Error handling {} message ({}): {}".format(msg_type, response, e)
+            )
+
+        return None
+
+    def set_pubsub_push_handler(self, pubsub_push_handler_func):
+        """Set the pubsub push handler function"""
+        self.pubsub_push_handler_func = pubsub_push_handler_func
+
+    def set_invalidation_push_handler(self, invalidation_push_handler_func):
+        """Set the invalidation push handler function"""
+        self.invalidation_push_handler_func = invalidation_push_handler_func
+
+    def set_node_moving_push_handler(self, node_moving_push_handler_func):
+        self.node_moving_push_handler_func = node_moving_push_handler_func
+
+    def set_maintenance_push_handler(self, maintenance_push_handler_func):
+        self.maintenance_push_handler_func = maintenance_push_handler_func
+
+
+class _AsyncRESPBase(AsyncBaseParser):
+    """Base class for async resp parsing"""
+
+    __slots__ = AsyncBaseParser.__slots__ + ("encoder", "_buffer", "_pos", "_chunks")
+
+    def __init__(self, socket_read_size: int):
+        super().__init__(socket_read_size)
+        self.encoder: Optional[Encoder] = None
+        self._buffer = b""
+        self._chunks = []
+        self._pos = 0
+
+    def _clear(self):
+        self._buffer = b""
+        self._chunks.clear()
+
+    def on_connect(self, connection):
+        """Called when the stream connects"""
+        self._stream = connection._reader
+        if self._stream is None:
+            raise RedisError("Buffer is closed.")
+        self.encoder = connection.encoder
+        self._clear()
+        self._connected = True
+
+    def on_disconnect(self):
+        """Called when the stream disconnects"""
+        self._connected = False
+
+    async def can_read_destructive(self) -> bool:
+        if not self._connected:
+            raise RedisError("Buffer is closed.")
+        if self._buffer:
+            return True
+        try:
+            async with async_timeout(0):
+                return self._stream.at_eof()
+        except TimeoutError:
+            return False
+
+    async def _read(self, length: int) -> bytes:
+        """
+        Read `length` bytes of data.  These are assumed to be followed
+        by a '\r\n' terminator which is subsequently discarded.
+        """
+        want = length + 2
+        end = self._pos + want
+        if len(self._buffer) >= end:
+            result = self._buffer[self._pos : end - 2]
+        else:
+            tail = self._buffer[self._pos :]
+            try:
+                data = await self._stream.readexactly(want - len(tail))
+            except IncompleteReadError as error:
+                raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR) from error
+            result = (tail + data)[:-2]
+            self._chunks.append(data)
+        self._pos += want
+        return result
+
+    async def _readline(self) -> bytes:
+        """
+        read an unknown number of bytes up to the next '\r\n'
+        line separator, which is discarded.
+        """
+        found = self._buffer.find(b"\r\n", self._pos)
+        if found >= 0:
+            result = self._buffer[self._pos : found]
+        else:
+            tail = self._buffer[self._pos :]
+            data = await self._stream.readline()
+            if not data.endswith(b"\r\n"):
+                raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+            result = (tail + data)[:-2]
+            self._chunks.append(data)
+        self._pos += len(result) + 2
+        return result

backend/.venv/lib/python3.12/site-packages/redis/_parsers/commands.py

@@ -0,0 +1,281 @@
+from typing import TYPE_CHECKING, Any, Dict, Optional, Tuple, Union
+
+from redis.exceptions import RedisError, ResponseError
+from redis.utils import str_if_bytes
+
+if TYPE_CHECKING:
+    from redis.asyncio.cluster import ClusterNode
+
+
+class AbstractCommandsParser:
+    def _get_pubsub_keys(self, *args):
+        """
+        Get the keys from pubsub command.
+        Although PubSub commands have predetermined key locations, they are not
+        supported in the 'COMMAND's output, so the key positions are hardcoded
+        in this method
+        """
+        if len(args) < 2:
+            # The command has no keys in it
+            return None
+        args = [str_if_bytes(arg) for arg in args]
+        command = args[0].upper()
+        keys = None
+        if command == "PUBSUB":
+            # the second argument is a part of the command name, e.g.
+            # ['PUBSUB', 'NUMSUB', 'foo'].
+            pubsub_type = args[1].upper()
+            if pubsub_type in ["CHANNELS", "NUMSUB", "SHARDCHANNELS", "SHARDNUMSUB"]:
+                keys = args[2:]
+        elif command in ["SUBSCRIBE", "PSUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE"]:
+            # format example:
+            # SUBSCRIBE channel [channel ...]
+            keys = list(args[1:])
+        elif command in ["PUBLISH", "SPUBLISH"]:
+            # format example:
+            # PUBLISH channel message
+            keys = [args[1]]
+        return keys
+
+    def parse_subcommand(self, command, **options):
+        cmd_dict = {}
+        cmd_name = str_if_bytes(command[0])
+        cmd_dict["name"] = cmd_name
+        cmd_dict["arity"] = int(command[1])
+        cmd_dict["flags"] = [str_if_bytes(flag) for flag in command[2]]
+        cmd_dict["first_key_pos"] = command[3]
+        cmd_dict["last_key_pos"] = command[4]
+        cmd_dict["step_count"] = command[5]
+        if len(command) > 7:
+            cmd_dict["tips"] = command[7]
+            cmd_dict["key_specifications"] = command[8]
+            cmd_dict["subcommands"] = command[9]
+        return cmd_dict
+
+
+class CommandsParser(AbstractCommandsParser):
+    """
+    Parses Redis commands to get command keys.
+    COMMAND output is used to determine key locations.
+    Commands that do not have a predefined key location are flagged with
+    'movablekeys', and these commands' keys are determined by the command
+    'COMMAND GETKEYS'.
+    """
+
+    def __init__(self, redis_connection):
+        self.commands = {}
+        self.initialize(redis_connection)
+
+    def initialize(self, r):
+        commands = r.command()
+        uppercase_commands = []
+        for cmd in commands:
+            if any(x.isupper() for x in cmd):
+                uppercase_commands.append(cmd)
+        for cmd in uppercase_commands:
+            commands[cmd.lower()] = commands.pop(cmd)
+        self.commands = commands
+
+    # As soon as this PR is merged into Redis, we should reimplement
+    # our logic to use COMMAND INFO changes to determine the key positions
+    # https://github.com/redis/redis/pull/8324
+    def get_keys(self, redis_conn, *args):
+        """
+        Get the keys from the passed command.
+
+        NOTE: Due to a bug in redis<7.0, this function does not work properly
+        for EVAL or EVALSHA when the `numkeys` arg is 0.
+         - issue: https://github.com/redis/redis/issues/9493
+         - fix: https://github.com/redis/redis/pull/9733
+
+        So, don't use this function with EVAL or EVALSHA.
+        """
+        if len(args) < 2:
+            # The command has no keys in it
+            return None
+
+        cmd_name = args[0].lower()
+        if cmd_name not in self.commands:
+            # try to split the command name and to take only the main command,
+            # e.g. 'memory' for 'memory usage'
+            cmd_name_split = cmd_name.split()
+            cmd_name = cmd_name_split[0]
+            if cmd_name in self.commands:
+                # save the splitted command to args
+                args = cmd_name_split + list(args[1:])
+            else:
+                # We'll try to reinitialize the commands cache, if the engine
+                # version has changed, the commands may not be current
+                self.initialize(redis_conn)
+                if cmd_name not in self.commands:
+                    raise RedisError(
+                        f"{cmd_name.upper()} command doesn't exist in Redis commands"
+                    )
+
+        command = self.commands.get(cmd_name)
+        if "movablekeys" in command["flags"]:
+            keys = self._get_moveable_keys(redis_conn, *args)
+        elif "pubsub" in command["flags"] or command["name"] == "pubsub":
+            keys = self._get_pubsub_keys(*args)
+        else:
+            if (
+                command["step_count"] == 0
+                and command["first_key_pos"] == 0
+                and command["last_key_pos"] == 0
+            ):
+                is_subcmd = False
+                if "subcommands" in command:
+                    subcmd_name = f"{cmd_name}|{args[1].lower()}"
+                    for subcmd in command["subcommands"]:
+                        if str_if_bytes(subcmd[0]) == subcmd_name:
+                            command = self.parse_subcommand(subcmd)
+                            is_subcmd = True
+
+                # The command doesn't have keys in it
+                if not is_subcmd:
+                    return None
+            last_key_pos = command["last_key_pos"]
+            if last_key_pos < 0:
+                last_key_pos = len(args) - abs(last_key_pos)
+            keys_pos = list(
+                range(command["first_key_pos"], last_key_pos + 1, command["step_count"])
+            )
+            keys = [args[pos] for pos in keys_pos]
+
+        return keys
+
+    def _get_moveable_keys(self, redis_conn, *args):
+        """
+        NOTE: Due to a bug in redis<7.0, this function does not work properly
+        for EVAL or EVALSHA when the `numkeys` arg is 0.
+         - issue: https://github.com/redis/redis/issues/9493
+         - fix: https://github.com/redis/redis/pull/9733
+
+        So, don't use this function with EVAL or EVALSHA.
+        """
+        # The command name should be splitted into separate arguments,
+        # e.g. 'MEMORY USAGE' will be splitted into ['MEMORY', 'USAGE']
+        pieces = args[0].split() + list(args[1:])
+        try:
+            keys = redis_conn.execute_command("COMMAND GETKEYS", *pieces)
+        except ResponseError as e:
+            message = e.__str__()
+            if (
+                "Invalid arguments" in message
+                or "The command has no key arguments" in message
+            ):
+                return None
+            else:
+                raise e
+        return keys
+
+
+class AsyncCommandsParser(AbstractCommandsParser):
+    """
+    Parses Redis commands to get command keys.
+
+    COMMAND output is used to determine key locations.
+    Commands that do not have a predefined key location are flagged with 'movablekeys',
+    and these commands' keys are determined by the command 'COMMAND GETKEYS'.
+
+    NOTE: Due to a bug in redis<7.0, this does not work properly
+    for EVAL or EVALSHA when the `numkeys` arg is 0.
+     - issue: https://github.com/redis/redis/issues/9493
+     - fix: https://github.com/redis/redis/pull/9733
+
+    So, don't use this with EVAL or EVALSHA.
+    """
+
+    __slots__ = ("commands", "node")
+
+    def __init__(self) -> None:
+        self.commands: Dict[str, Union[int, Dict[str, Any]]] = {}
+
+    async def initialize(self, node: Optional["ClusterNode"] = None) -> None:
+        if node:
+            self.node = node
+
+        commands = await self.node.execute_command("COMMAND")
+        self.commands = {cmd.lower(): command for cmd, command in commands.items()}
+
+    # As soon as this PR is merged into Redis, we should reimplement
+    # our logic to use COMMAND INFO changes to determine the key positions
+    # https://github.com/redis/redis/pull/8324
+    async def get_keys(self, *args: Any) -> Optional[Tuple[str, ...]]:
+        """
+        Get the keys from the passed command.
+
+        NOTE: Due to a bug in redis<7.0, this function does not work properly
+        for EVAL or EVALSHA when the `numkeys` arg is 0.
+         - issue: https://github.com/redis/redis/issues/9493
+         - fix: https://github.com/redis/redis/pull/9733
+
+        So, don't use this function with EVAL or EVALSHA.
+        """
+        if len(args) < 2:
+            # The command has no keys in it
+            return None
+
+        cmd_name = args[0].lower()
+        if cmd_name not in self.commands:
+            # try to split the command name and to take only the main command,
+            # e.g. 'memory' for 'memory usage'
+            cmd_name_split = cmd_name.split()
+            cmd_name = cmd_name_split[0]
+            if cmd_name in self.commands:
+                # save the splitted command to args
+                args = cmd_name_split + list(args[1:])
+            else:
+                # We'll try to reinitialize the commands cache, if the engine
+                # version has changed, the commands may not be current
+                await self.initialize()
+                if cmd_name not in self.commands:
+                    raise RedisError(
+                        f"{cmd_name.upper()} command doesn't exist in Redis commands"
+                    )
+
+        command = self.commands.get(cmd_name)
+        if "movablekeys" in command["flags"]:
+            keys = await self._get_moveable_keys(*args)
+        elif "pubsub" in command["flags"] or command["name"] == "pubsub":
+            keys = self._get_pubsub_keys(*args)
+        else:
+            if (
+                command["step_count"] == 0
+                and command["first_key_pos"] == 0
+                and command["last_key_pos"] == 0
+            ):
+                is_subcmd = False
+                if "subcommands" in command:
+                    subcmd_name = f"{cmd_name}|{args[1].lower()}"
+                    for subcmd in command["subcommands"]:
+                        if str_if_bytes(subcmd[0]) == subcmd_name:
+                            command = self.parse_subcommand(subcmd)
+                            is_subcmd = True
+
+                # The command doesn't have keys in it
+                if not is_subcmd:
+                    return None
+            last_key_pos = command["last_key_pos"]
+            if last_key_pos < 0:
+                last_key_pos = len(args) - abs(last_key_pos)
+            keys_pos = list(
+                range(command["first_key_pos"], last_key_pos + 1, command["step_count"])
+            )
+            keys = [args[pos] for pos in keys_pos]
+
+        return keys
+
+    async def _get_moveable_keys(self, *args: Any) -> Optional[Tuple[str, ...]]:
+        try:
+            keys = await self.node.execute_command("COMMAND GETKEYS", *args)
+        except ResponseError as e:
+            message = e.__str__()
+            if (
+                "Invalid arguments" in message
+                or "The command has no key arguments" in message
+            ):
+                return None
+            else:
+                raise e
+        return keys

backend/.venv/lib/python3.12/site-packages/redis/_parsers/encoders.py

@@ -0,0 +1,44 @@
+from ..exceptions import DataError
+
+
+class Encoder:
+    "Encode strings to bytes-like and decode bytes-like to strings"
+
+    __slots__ = "encoding", "encoding_errors", "decode_responses"
+
+    def __init__(self, encoding, encoding_errors, decode_responses):
+        self.encoding = encoding
+        self.encoding_errors = encoding_errors
+        self.decode_responses = decode_responses
+
+    def encode(self, value):
+        "Return a bytestring or bytes-like representation of the value"
+        if isinstance(value, (bytes, memoryview)):
+            return value
+        elif isinstance(value, bool):
+            # special case bool since it is a subclass of int
+            raise DataError(
+                "Invalid input of type: 'bool'. Convert to a "
+                "bytes, string, int or float first."
+            )
+        elif isinstance(value, (int, float)):
+            value = repr(value).encode()
+        elif not isinstance(value, str):
+            # a value we don't know how to deal with. throw an error
+            typename = type(value).__name__
+            raise DataError(
+                f"Invalid input of type: '{typename}'. "
+                f"Convert to a bytes, string, int or float first."
+            )
+        if isinstance(value, str):
+            value = value.encode(self.encoding, self.encoding_errors)
+        return value
+
+    def decode(self, value, force=False):
+        "Return a unicode string from the bytes-like representation"
+        if self.decode_responses or force:
+            if isinstance(value, memoryview):
+                value = value.tobytes()
+            if isinstance(value, bytes):
+                value = value.decode(self.encoding, self.encoding_errors)
+        return value

backend/.venv/lib/python3.12/site-packages/redis/_parsers/helpers.py

@@ -0,0 +1,941 @@
+import datetime
+
+from redis.utils import str_if_bytes
+
+
+def timestamp_to_datetime(response):
+    "Converts a unix timestamp to a Python datetime object"
+    if not response:
+        return None
+    try:
+        response = int(response)
+    except ValueError:
+        return None
+    return datetime.datetime.fromtimestamp(response)
+
+
+def parse_debug_object(response):
+    "Parse the results of Redis's DEBUG OBJECT command into a Python dict"
+    # The 'type' of the object is the first item in the response, but isn't
+    # prefixed with a name
+    response = str_if_bytes(response)
+    response = "type:" + response
+    response = dict(kv.split(":") for kv in response.split())
+
+    # parse some expected int values from the string response
+    # note: this cmd isn't spec'd so these may not appear in all redis versions
+    int_fields = ("refcount", "serializedlength", "lru", "lru_seconds_idle")
+    for field in int_fields:
+        if field in response:
+            response[field] = int(response[field])
+
+    return response
+
+
+def parse_info(response):
+    """Parse the result of Redis's INFO command into a Python dict"""
+    info = {}
+    response = str_if_bytes(response)
+
+    def get_value(value):
+        if "," not in value and "=" not in value:
+            try:
+                if "." in value:
+                    return float(value)
+                else:
+                    return int(value)
+            except ValueError:
+                return value
+        elif "=" not in value:
+            return [get_value(v) for v in value.split(",") if v]
+        else:
+            sub_dict = {}
+            for item in value.split(","):
+                if not item:
+                    continue
+                if "=" in item:
+                    k, v = item.rsplit("=", 1)
+                    sub_dict[k] = get_value(v)
+                else:
+                    sub_dict[item] = True
+            return sub_dict
+
+    for line in response.splitlines():
+        if line and not line.startswith("#"):
+            if line.find(":") != -1:
+                # Split, the info fields keys and values.
+                # Note that the value may contain ':'. but the 'host:'
+                # pseudo-command is the only case where the key contains ':'
+                key, value = line.split(":", 1)
+                if key == "cmdstat_host":
+                    key, value = line.rsplit(":", 1)
+
+                if key == "module":
+                    # Hardcode a list for key 'modules' since there could be
+                    # multiple lines that started with 'module'
+                    info.setdefault("modules", []).append(get_value(value))
+                else:
+                    info[key] = get_value(value)
+            else:
+                # if the line isn't splittable, append it to the "__raw__" key
+                info.setdefault("__raw__", []).append(line)
+
+    return info
+
+
+def parse_memory_stats(response, **kwargs):
+    """Parse the results of MEMORY STATS"""
+    stats = pairs_to_dict(response, decode_keys=True, decode_string_values=True)
+    for key, value in stats.items():
+        if key.startswith("db.") and isinstance(value, list):
+            stats[key] = pairs_to_dict(
+                value, decode_keys=True, decode_string_values=True
+            )
+    return stats
+
+
+SENTINEL_STATE_TYPES = {
+    "can-failover-its-master": int,
+    "config-epoch": int,
+    "down-after-milliseconds": int,
+    "failover-timeout": int,
+    "info-refresh": int,
+    "last-hello-message": int,
+    "last-ok-ping-reply": int,
+    "last-ping-reply": int,
+    "last-ping-sent": int,
+    "master-link-down-time": int,
+    "master-port": int,
+    "num-other-sentinels": int,
+    "num-slaves": int,
+    "o-down-time": int,
+    "pending-commands": int,
+    "parallel-syncs": int,
+    "port": int,
+    "quorum": int,
+    "role-reported-time": int,
+    "s-down-time": int,
+    "slave-priority": int,
+    "slave-repl-offset": int,
+    "voted-leader-epoch": int,
+}
+
+
+def parse_sentinel_state(item):
+    result = pairs_to_dict_typed(item, SENTINEL_STATE_TYPES)
+    flags = set(result["flags"].split(","))
+    for name, flag in (
+        ("is_master", "master"),
+        ("is_slave", "slave"),
+        ("is_sdown", "s_down"),
+        ("is_odown", "o_down"),
+        ("is_sentinel", "sentinel"),
+        ("is_disconnected", "disconnected"),
+        ("is_master_down", "master_down"),
+    ):
+        result[name] = flag in flags
+    return result
+
+
+def parse_sentinel_master(response):
+    return parse_sentinel_state(map(str_if_bytes, response))
+
+
+def parse_sentinel_state_resp3(response):
+    result = {}
+    for key in response:
+        try:
+            value = SENTINEL_STATE_TYPES[key](str_if_bytes(response[key]))
+            result[str_if_bytes(key)] = value
+        except Exception:
+            result[str_if_bytes(key)] = response[str_if_bytes(key)]
+    flags = set(result["flags"].split(","))
+    result["flags"] = flags
+    return result
+
+
+def parse_sentinel_masters(response):
+    result = {}
+    for item in response:
+        state = parse_sentinel_state(map(str_if_bytes, item))
+        result[state["name"]] = state
+    return result
+
+
+def parse_sentinel_masters_resp3(response):
+    return [parse_sentinel_state(master) for master in response]
+
+
+def parse_sentinel_slaves_and_sentinels(response):
+    return [parse_sentinel_state(map(str_if_bytes, item)) for item in response]
+
+
+def parse_sentinel_slaves_and_sentinels_resp3(response):
+    return [parse_sentinel_state_resp3(item) for item in response]
+
+
+def parse_sentinel_get_master(response):
+    return response and (response[0], int(response[1])) or None
+
+
+def pairs_to_dict(response, decode_keys=False, decode_string_values=False):
+    """Create a dict given a list of key/value pairs"""
+    if response is None:
+        return {}
+    if decode_keys or decode_string_values:
+        # the iter form is faster, but I don't know how to make that work
+        # with a str_if_bytes() map
+        keys = response[::2]
+        if decode_keys:
+            keys = map(str_if_bytes, keys)
+        values = response[1::2]
+        if decode_string_values:
+            values = map(str_if_bytes, values)
+        return dict(zip(keys, values))
+    else:
+        it = iter(response)
+        return dict(zip(it, it))
+
+
+def pairs_to_dict_typed(response, type_info):
+    it = iter(response)
+    result = {}
+    for key, value in zip(it, it):
+        if key in type_info:
+            try:
+                value = type_info[key](value)
+            except Exception:
+                # if for some reason the value can't be coerced, just use
+                # the string value
+                pass
+        result[key] = value
+    return result
+
+
+def zset_score_pairs(response, **options):
+    """
+    If ``withscores`` is specified in the options, return the response as
+    a list of (value, score) pairs
+    """
+    if not response or not options.get("withscores"):
+        return response
+    score_cast_func = options.get("score_cast_func", float)
+    it = iter(response)
+    return list(zip(it, map(score_cast_func, it)))
+
+
+def zset_score_for_rank(response, **options):
+    """
+    If ``withscores`` is specified in the options, return the response as
+    a [value, score] pair
+    """
+    if not response or not options.get("withscore"):
+        return response
+    score_cast_func = options.get("score_cast_func", float)
+    return [response[0], score_cast_func(response[1])]
+
+
+def zset_score_pairs_resp3(response, **options):
+    """
+    If ``withscores`` is specified in the options, return the response as
+    a list of [value, score] pairs
+    """
+    if not response or not options.get("withscores"):
+        return response
+    score_cast_func = options.get("score_cast_func", float)
+    return [[name, score_cast_func(val)] for name, val in response]
+
+
+def zset_score_for_rank_resp3(response, **options):
+    """
+    If ``withscores`` is specified in the options, return the response as
+    a [value, score] pair
+    """
+    if not response or not options.get("withscore"):
+        return response
+    score_cast_func = options.get("score_cast_func", float)
+    return [response[0], score_cast_func(response[1])]
+
+
+def sort_return_tuples(response, **options):
+    """
+    If ``groups`` is specified, return the response as a list of
+    n-element tuples with n being the value found in options['groups']
+    """
+    if not response or not options.get("groups"):
+        return response
+    n = options["groups"]
+    return list(zip(*[response[i::n] for i in range(n)]))
+
+
+def parse_stream_list(response):
+    if response is None:
+        return None
+    data = []
+    for r in response:
+        if r is not None:
+            data.append((r[0], pairs_to_dict(r[1])))
+        else:
+            data.append((None, None))
+    return data
+
+
+def pairs_to_dict_with_str_keys(response):
+    return pairs_to_dict(response, decode_keys=True)
+
+
+def parse_list_of_dicts(response):
+    return list(map(pairs_to_dict_with_str_keys, response))
+
+
+def parse_xclaim(response, **options):
+    if options.get("parse_justid", False):
+        return response
+    return parse_stream_list(response)
+
+
+def parse_xautoclaim(response, **options):
+    if options.get("parse_justid", False):
+        return response[1]
+    response[1] = parse_stream_list(response[1])
+    return response
+
+
+def parse_xinfo_stream(response, **options):
+    if isinstance(response, list):
+        data = pairs_to_dict(response, decode_keys=True)
+    else:
+        data = {str_if_bytes(k): v for k, v in response.items()}
+    if not options.get("full", False):
+        first = data.get("first-entry")
+        if first is not None and first[0] is not None:
+            data["first-entry"] = (first[0], pairs_to_dict(first[1]))
+        last = data["last-entry"]
+        if last is not None and last[0] is not None:
+            data["last-entry"] = (last[0], pairs_to_dict(last[1]))
+    else:
+        data["entries"] = {_id: pairs_to_dict(entry) for _id, entry in data["entries"]}
+        if len(data["groups"]) > 0 and isinstance(data["groups"][0], list):
+            data["groups"] = [
+                pairs_to_dict(group, decode_keys=True) for group in data["groups"]
+            ]
+            for g in data["groups"]:
+                if g["consumers"] and g["consumers"][0] is not None:
+                    g["consumers"] = [
+                        pairs_to_dict(c, decode_keys=True) for c in g["consumers"]
+                    ]
+        else:
+            data["groups"] = [
+                {str_if_bytes(k): v for k, v in group.items()}
+                for group in data["groups"]
+            ]
+    return data
+
+
+def parse_xread(response):
+    if response is None:
+        return []
+    return [[r[0], parse_stream_list(r[1])] for r in response]
+
+
+def parse_xread_resp3(response):
+    if response is None:
+        return {}
+    return {key: [parse_stream_list(value)] for key, value in response.items()}
+
+
+def parse_xpending(response, **options):
+    if options.get("parse_detail", False):
+        return parse_xpending_range(response)
+    consumers = [{"name": n, "pending": int(p)} for n, p in response[3] or []]
+    return {
+        "pending": response[0],
+        "min": response[1],
+        "max": response[2],
+        "consumers": consumers,
+    }
+
+
+def parse_xpending_range(response):
+    k = ("message_id", "consumer", "time_since_delivered", "times_delivered")
+    return [dict(zip(k, r)) for r in response]
+
+
+def float_or_none(response):
+    if response is None:
+        return None
+    return float(response)
+
+
+def bool_ok(response, **options):
+    return str_if_bytes(response) == "OK"
+
+
+def parse_zadd(response, **options):
+    if response is None:
+        return None
+    if options.get("as_score"):
+        return float(response)
+    return int(response)
+
+
+def parse_client_list(response, **options):
+    clients = []
+    for c in str_if_bytes(response).splitlines():
+        client_dict = {}
+        tokens = c.split(" ")
+        last_key = None
+        for token in tokens:
+            if "=" in token:
+                # Values might contain '='
+                key, value = token.split("=", 1)
+                client_dict[key] = value
+                last_key = key
+            else:
+                # Values may include spaces. For instance, when running Redis via a Unix socket — such as
+                # "/tmp/redis sock/redis.sock" — the addr or laddr field will include a space.
+                client_dict[last_key] += " " + token
+
+        if client_dict:
+            clients.append(client_dict)
+    return clients
+
+
+def parse_config_get(response, **options):
+    response = [str_if_bytes(i) if i is not None else None for i in response]
+    return response and pairs_to_dict(response) or {}
+
+
+def parse_scan(response, **options):
+    cursor, r = response
+    return int(cursor), r
+
+
+def parse_hscan(response, **options):
+    cursor, r = response
+    no_values = options.get("no_values", False)
+    if no_values:
+        payload = r or []
+    else:
+        payload = r and pairs_to_dict(r) or {}
+    return int(cursor), payload
+
+
+def parse_zscan(response, **options):
+    score_cast_func = options.get("score_cast_func", float)
+    cursor, r = response
+    it = iter(r)
+    return int(cursor), list(zip(it, map(score_cast_func, it)))
+
+
+def parse_zmscore(response, **options):
+    # zmscore: list of scores (double precision floating point number) or nil
+    return [float(score) if score is not None else None for score in response]
+
+
+def parse_slowlog_get(response, **options):
+    space = " " if options.get("decode_responses", False) else b" "
+
+    def parse_item(item):
+        result = {"id": item[0], "start_time": int(item[1]), "duration": int(item[2])}
+        # Redis Enterprise injects another entry at index [3], which has
+        # the complexity info (i.e. the value N in case the command has
+        # an O(N) complexity) instead of the command.
+        if isinstance(item[3], list):
+            result["command"] = space.join(item[3])
+
+            # These fields are optional, depends on environment.
+            if len(item) >= 6:
+                result["client_address"] = item[4]
+                result["client_name"] = item[5]
+        else:
+            result["complexity"] = item[3]
+            result["command"] = space.join(item[4])
+
+            # These fields are optional, depends on environment.
+            if len(item) >= 7:
+                result["client_address"] = item[5]
+                result["client_name"] = item[6]
+
+        return result
+
+    return [parse_item(item) for item in response]
+
+
+def parse_stralgo(response, **options):
+    """
+    Parse the response from `STRALGO` command.
+    Without modifiers the returned value is string.
+    When LEN is given the command returns the length of the result
+    (i.e integer).
+    When IDX is given the command returns a dictionary with the LCS
+    length and all the ranges in both the strings, start and end
+    offset for each string, where there are matches.
+    When WITHMATCHLEN is given, each array representing a match will
+    also have the length of the match at the beginning of the array.
+    """
+    if options.get("len", False):
+        return int(response)
+    if options.get("idx", False):
+        if options.get("withmatchlen", False):
+            matches = [
+                [(int(match[-1]))] + list(map(tuple, match[:-1]))
+                for match in response[1]
+            ]
+        else:
+            matches = [list(map(tuple, match)) for match in response[1]]
+        return {
+            str_if_bytes(response[0]): matches,
+            str_if_bytes(response[2]): int(response[3]),
+        }
+    return str_if_bytes(response)
+
+
+def parse_cluster_info(response, **options):
+    response = str_if_bytes(response)
+    return dict(line.split(":") for line in response.splitlines() if line)
+
+
+def _parse_node_line(line):
+    line_items = line.split(" ")
+    node_id, addr, flags, master_id, ping, pong, epoch, connected = line.split(" ")[:8]
+    ip = addr.split("@")[0]
+    hostname = addr.split("@")[1].split(",")[1] if "@" in addr and "," in addr else ""
+    node_dict = {
+        "node_id": node_id,
+        "hostname": hostname,
+        "flags": flags,
+        "master_id": master_id,
+        "last_ping_sent": ping,
+        "last_pong_rcvd": pong,
+        "epoch": epoch,
+        "slots": [],
+        "migrations": [],
+        "connected": True if connected == "connected" else False,
+    }
+    if len(line_items) >= 9:
+        slots, migrations = _parse_slots(line_items[8:])
+        node_dict["slots"], node_dict["migrations"] = slots, migrations
+    return ip, node_dict
+
+
+def _parse_slots(slot_ranges):
+    slots, migrations = [], []
+    for s_range in slot_ranges:
+        if "->-" in s_range:
+            slot_id, dst_node_id = s_range[1:-1].split("->-", 1)
+            migrations.append(
+                {"slot": slot_id, "node_id": dst_node_id, "state": "migrating"}
+            )
+        elif "-<-" in s_range:
+            slot_id, src_node_id = s_range[1:-1].split("-<-", 1)
+            migrations.append(
+                {"slot": slot_id, "node_id": src_node_id, "state": "importing"}
+            )
+        else:
+            s_range = [sl for sl in s_range.split("-")]
+            slots.append(s_range)
+
+    return slots, migrations
+
+
+def parse_cluster_nodes(response, **options):
+    """
+    @see: https://redis.io/commands/cluster-nodes  # string / bytes
+    @see: https://redis.io/commands/cluster-replicas # list of string / bytes
+    """
+    if isinstance(response, (str, bytes)):
+        response = response.splitlines()
+    return dict(_parse_node_line(str_if_bytes(node)) for node in response)
+
+
+def parse_geosearch_generic(response, **options):
+    """
+    Parse the response of 'GEOSEARCH', GEORADIUS' and 'GEORADIUSBYMEMBER'
+    commands according to 'withdist', 'withhash' and 'withcoord' labels.
+    """
+    try:
+        if options["store"] or options["store_dist"]:
+            # `store` and `store_dist` cant be combined
+            # with other command arguments.
+            # relevant to 'GEORADIUS' and 'GEORADIUSBYMEMBER'
+            return response
+    except KeyError:  # it means the command was sent via execute_command
+        return response
+
+    if not isinstance(response, list):
+        response_list = [response]
+    else:
+        response_list = response
+
+    if not options["withdist"] and not options["withcoord"] and not options["withhash"]:
+        # just a bunch of places
+        return response_list
+
+    cast = {
+        "withdist": float,
+        "withcoord": lambda ll: (float(ll[0]), float(ll[1])),
+        "withhash": int,
+    }
+
+    # zip all output results with each casting function to get
+    # the properly native Python value.
+    f = [lambda x: x]
+    f += [cast[o] for o in ["withdist", "withhash", "withcoord"] if options[o]]
+    return [list(map(lambda fv: fv[0](fv[1]), zip(f, r))) for r in response_list]
+
+
+def parse_command(response, **options):
+    commands = {}
+    for command in response:
+        cmd_dict = {}
+        cmd_name = str_if_bytes(command[0])
+        cmd_dict["name"] = cmd_name
+        cmd_dict["arity"] = int(command[1])
+        cmd_dict["flags"] = [str_if_bytes(flag) for flag in command[2]]
+        cmd_dict["first_key_pos"] = command[3]
+        cmd_dict["last_key_pos"] = command[4]
+        cmd_dict["step_count"] = command[5]
+        if len(command) > 7:
+            cmd_dict["tips"] = command[7]
+            cmd_dict["key_specifications"] = command[8]
+            cmd_dict["subcommands"] = command[9]
+        commands[cmd_name] = cmd_dict
+    return commands
+
+
+def parse_command_resp3(response, **options):
+    commands = {}
+    for command in response:
+        cmd_dict = {}
+        cmd_name = str_if_bytes(command[0])
+        cmd_dict["name"] = cmd_name
+        cmd_dict["arity"] = command[1]
+        cmd_dict["flags"] = {str_if_bytes(flag) for flag in command[2]}
+        cmd_dict["first_key_pos"] = command[3]
+        cmd_dict["last_key_pos"] = command[4]
+        cmd_dict["step_count"] = command[5]
+        cmd_dict["acl_categories"] = command[6]
+        if len(command) > 7:
+            cmd_dict["tips"] = command[7]
+            cmd_dict["key_specifications"] = command[8]
+            cmd_dict["subcommands"] = command[9]
+
+        commands[cmd_name] = cmd_dict
+    return commands
+
+
+def parse_pubsub_numsub(response, **options):
+    return list(zip(response[0::2], response[1::2]))
+
+
+def parse_client_kill(response, **options):
+    if isinstance(response, int):
+        return response
+    return str_if_bytes(response) == "OK"
+
+
+def parse_acl_getuser(response, **options):
+    if response is None:
+        return None
+    if isinstance(response, list):
+        data = pairs_to_dict(response, decode_keys=True)
+    else:
+        data = {str_if_bytes(key): value for key, value in response.items()}
+
+    # convert everything but user-defined data in 'keys' to native strings
+    data["flags"] = list(map(str_if_bytes, data["flags"]))
+    data["passwords"] = list(map(str_if_bytes, data["passwords"]))
+    data["commands"] = str_if_bytes(data["commands"])
+    if isinstance(data["keys"], str) or isinstance(data["keys"], bytes):
+        data["keys"] = list(str_if_bytes(data["keys"]).split(" "))
+    if data["keys"] == [""]:
+        data["keys"] = []
+    if "channels" in data:
+        if isinstance(data["channels"], str) or isinstance(data["channels"], bytes):
+            data["channels"] = list(str_if_bytes(data["channels"]).split(" "))
+        if data["channels"] == [""]:
+            data["channels"] = []
+    if "selectors" in data:
+        if data["selectors"] != [] and isinstance(data["selectors"][0], list):
+            data["selectors"] = [
+                list(map(str_if_bytes, selector)) for selector in data["selectors"]
+            ]
+        elif data["selectors"] != []:
+            data["selectors"] = [
+                {str_if_bytes(k): str_if_bytes(v) for k, v in selector.items()}
+                for selector in data["selectors"]
+            ]
+
+    # split 'commands' into separate 'categories' and 'commands' lists
+    commands, categories = [], []
+    for command in data["commands"].split(" "):
+        categories.append(command) if "@" in command else commands.append(command)
+
+    data["commands"] = commands
+    data["categories"] = categories
+    data["enabled"] = "on" in data["flags"]
+    return data
+
+
+def parse_acl_log(response, **options):
+    if response is None:
+        return None
+    if isinstance(response, list):
+        data = []
+        for log in response:
+            log_data = pairs_to_dict(log, True, True)
+            client_info = log_data.get("client-info", "")
+            log_data["client-info"] = parse_client_info(client_info)
+
+            # float() is lossy comparing to the "double" in C
+            log_data["age-seconds"] = float(log_data["age-seconds"])
+            data.append(log_data)
+    else:
+        data = bool_ok(response)
+    return data
+
+
+def parse_client_info(value):
+    """
+    Parsing client-info in ACL Log in following format.
+    "key1=value1 key2=value2 key3=value3"
+    """
+    client_info = {}
+    for info in str_if_bytes(value).strip().split():
+        key, value = info.split("=")
+        client_info[key] = value
+
+    # Those fields are defined as int in networking.c
+    for int_key in {
+        "id",
+        "age",
+        "idle",
+        "db",
+        "sub",
+        "psub",
+        "multi",
+        "qbuf",
+        "qbuf-free",
+        "obl",
+        "argv-mem",
+        "oll",
+        "omem",
+        "tot-mem",
+    }:
+        if int_key in client_info:
+            client_info[int_key] = int(client_info[int_key])
+    return client_info
+
+
+def parse_set_result(response, **options):
+    """
+    Handle SET result since GET argument is available since Redis 6.2.
+    Parsing SET result into:
+    - BOOL
+    - String when GET argument is used
+    """
+    if options.get("get"):
+        # Redis will return a getCommand result.
+        # See `setGenericCommand` in t_string.c
+        return response
+    return response and str_if_bytes(response) == "OK"
+
+
+def string_keys_to_dict(key_string, callback):
+    return dict.fromkeys(key_string.split(), callback)
+
+
+_RedisCallbacks = {
+    **string_keys_to_dict(
+        "AUTH COPY EXPIRE EXPIREAT HEXISTS HMSET MOVE MSETNX PERSIST PSETEX "
+        "PEXPIRE PEXPIREAT RENAMENX SETEX SETNX SMOVE",
+        bool,
+    ),
+    **string_keys_to_dict("HINCRBYFLOAT INCRBYFLOAT", float),
+    **string_keys_to_dict(
+        "ASKING FLUSHALL FLUSHDB LSET LTRIM MSET PFMERGE READONLY READWRITE "
+        "RENAME SAVE SELECT SHUTDOWN SLAVEOF SWAPDB WATCH UNWATCH",
+        bool_ok,
+    ),
+    **string_keys_to_dict("XREAD XREADGROUP", parse_xread),
+    **string_keys_to_dict(
+        "GEORADIUS GEORADIUSBYMEMBER GEOSEARCH",
+        parse_geosearch_generic,
+    ),
+    **string_keys_to_dict("XRANGE XREVRANGE", parse_stream_list),
+    "ACL GETUSER": parse_acl_getuser,
+    "ACL LOAD": bool_ok,
+    "ACL LOG": parse_acl_log,
+    "ACL SETUSER": bool_ok,
+    "ACL SAVE": bool_ok,
+    "CLIENT INFO": parse_client_info,
+    "CLIENT KILL": parse_client_kill,
+    "CLIENT LIST": parse_client_list,
+    "CLIENT PAUSE": bool_ok,
+    "CLIENT SETINFO": bool_ok,
+    "CLIENT SETNAME": bool_ok,
+    "CLIENT UNBLOCK": bool,
+    "CLUSTER ADDSLOTS": bool_ok,
+    "CLUSTER ADDSLOTSRANGE": bool_ok,
+    "CLUSTER DELSLOTS": bool_ok,
+    "CLUSTER DELSLOTSRANGE": bool_ok,
+    "CLUSTER FAILOVER": bool_ok,
+    "CLUSTER FORGET": bool_ok,
+    "CLUSTER INFO": parse_cluster_info,
+    "CLUSTER MEET": bool_ok,
+    "CLUSTER NODES": parse_cluster_nodes,
+    "CLUSTER REPLICAS": parse_cluster_nodes,
+    "CLUSTER REPLICATE": bool_ok,
+    "CLUSTER RESET": bool_ok,
+    "CLUSTER SAVECONFIG": bool_ok,
+    "CLUSTER SET-CONFIG-EPOCH": bool_ok,
+    "CLUSTER SETSLOT": bool_ok,
+    "CLUSTER SLAVES": parse_cluster_nodes,
+    "COMMAND": parse_command,
+    "CONFIG RESETSTAT": bool_ok,
+    "CONFIG SET": bool_ok,
+    "FUNCTION DELETE": bool_ok,
+    "FUNCTION FLUSH": bool_ok,
+    "FUNCTION RESTORE": bool_ok,
+    "GEODIST": float_or_none,
+    "HSCAN": parse_hscan,
+    "INFO": parse_info,
+    "LASTSAVE": timestamp_to_datetime,
+    "MEMORY PURGE": bool_ok,
+    "MODULE LOAD": bool,
+    "MODULE UNLOAD": bool,
+    "PING": lambda r: str_if_bytes(r) == "PONG",
+    "PUBSUB NUMSUB": parse_pubsub_numsub,
+    "PUBSUB SHARDNUMSUB": parse_pubsub_numsub,
+    "QUIT": bool_ok,
+    "SET": parse_set_result,
+    "SCAN": parse_scan,
+    "SCRIPT EXISTS": lambda r: list(map(bool, r)),
+    "SCRIPT FLUSH": bool_ok,
+    "SCRIPT KILL": bool_ok,
+    "SCRIPT LOAD": str_if_bytes,
+    "SENTINEL CKQUORUM": bool_ok,
+    "SENTINEL FAILOVER": bool_ok,
+    "SENTINEL FLUSHCONFIG": bool_ok,
+    "SENTINEL GET-MASTER-ADDR-BY-NAME": parse_sentinel_get_master,
+    "SENTINEL MONITOR": bool_ok,
+    "SENTINEL RESET": bool_ok,
+    "SENTINEL REMOVE": bool_ok,
+    "SENTINEL SET": bool_ok,
+    "SLOWLOG GET": parse_slowlog_get,
+    "SLOWLOG RESET": bool_ok,
+    "SORT": sort_return_tuples,
+    "SSCAN": parse_scan,
+    "TIME": lambda x: (int(x[0]), int(x[1])),
+    "XAUTOCLAIM": parse_xautoclaim,
+    "XCLAIM": parse_xclaim,
+    "XGROUP CREATE": bool_ok,
+    "XGROUP DESTROY": bool,
+    "XGROUP SETID": bool_ok,
+    "XINFO STREAM": parse_xinfo_stream,
+    "XPENDING": parse_xpending,
+    "ZSCAN": parse_zscan,
+}
+
+
+_RedisCallbacksRESP2 = {
+    **string_keys_to_dict(
+        "SDIFF SINTER SMEMBERS SUNION", lambda r: r and set(r) or set()
+    ),
+    **string_keys_to_dict(
+        "ZDIFF ZINTER ZPOPMAX ZPOPMIN ZRANGE ZRANGEBYSCORE ZREVRANGE "
+        "ZREVRANGEBYSCORE ZUNION",
+        zset_score_pairs,
+    ),
+    **string_keys_to_dict(
+        "ZREVRANK ZRANK",
+        zset_score_for_rank,
+    ),
+    **string_keys_to_dict("ZINCRBY ZSCORE", float_or_none),
+    **string_keys_to_dict("BGREWRITEAOF BGSAVE", lambda r: True),
+    **string_keys_to_dict("BLPOP BRPOP", lambda r: r and tuple(r) or None),
+    **string_keys_to_dict(
+        "BZPOPMAX BZPOPMIN", lambda r: r and (r[0], r[1], float(r[2])) or None
+    ),
+    "ACL CAT": lambda r: list(map(str_if_bytes, r)),
+    "ACL GENPASS": str_if_bytes,
+    "ACL HELP": lambda r: list(map(str_if_bytes, r)),
+    "ACL LIST": lambda r: list(map(str_if_bytes, r)),
+    "ACL USERS": lambda r: list(map(str_if_bytes, r)),
+    "ACL WHOAMI": str_if_bytes,
+    "CLIENT GETNAME": str_if_bytes,
+    "CLIENT TRACKINGINFO": lambda r: list(map(str_if_bytes, r)),
+    "CLUSTER GETKEYSINSLOT": lambda r: list(map(str_if_bytes, r)),
+    "COMMAND GETKEYS": lambda r: list(map(str_if_bytes, r)),
+    "CONFIG GET": parse_config_get,
+    "DEBUG OBJECT": parse_debug_object,
+    "GEOHASH": lambda r: list(map(str_if_bytes, r)),
+    "GEOPOS": lambda r: list(
+        map(lambda ll: (float(ll[0]), float(ll[1])) if ll is not None else None, r)
+    ),
+    "HGETALL": lambda r: r and pairs_to_dict(r) or {},
+    "MEMORY STATS": parse_memory_stats,
+    "MODULE LIST": lambda r: [pairs_to_dict(m) for m in r],
+    "RESET": str_if_bytes,
+    "SENTINEL MASTER": parse_sentinel_master,
+    "SENTINEL MASTERS": parse_sentinel_masters,
+    "SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels,
+    "SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels,
+    "STRALGO": parse_stralgo,
+    "XINFO CONSUMERS": parse_list_of_dicts,
+    "XINFO GROUPS": parse_list_of_dicts,
+    "ZADD": parse_zadd,
+    "ZMSCORE": parse_zmscore,
+}
+
+
+_RedisCallbacksRESP3 = {
+    **string_keys_to_dict(
+        "SDIFF SINTER SMEMBERS SUNION", lambda r: r and set(r) or set()
+    ),
+    **string_keys_to_dict(
+        "ZRANGE ZINTER ZPOPMAX ZPOPMIN HGETALL XREADGROUP",
+        lambda r, **kwargs: r,
+    ),
+    **string_keys_to_dict(
+        "ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
+        zset_score_pairs_resp3,
+    ),
+    **string_keys_to_dict(
+        "ZREVRANK ZRANK",
+        zset_score_for_rank_resp3,
+    ),
+    **string_keys_to_dict("XREAD XREADGROUP", parse_xread_resp3),
+    "ACL LOG": lambda r: (
+        [
+            {str_if_bytes(key): str_if_bytes(value) for key, value in x.items()}
+            for x in r
+        ]
+        if isinstance(r, list)
+        else bool_ok(r)
+    ),
+    "COMMAND": parse_command_resp3,
+    "CONFIG GET": lambda r: {
+        str_if_bytes(key) if key is not None else None: (
+            str_if_bytes(value) if value is not None else None
+        )
+        for key, value in r.items()
+    },
+    "MEMORY STATS": lambda r: {str_if_bytes(key): value for key, value in r.items()},
+    "SENTINEL MASTER": parse_sentinel_state_resp3,
+    "SENTINEL MASTERS": parse_sentinel_masters_resp3,
+    "SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels_resp3,
+    "SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels_resp3,
+    "STRALGO": lambda r, **options: (
+        {str_if_bytes(key): str_if_bytes(value) for key, value in r.items()}
+        if isinstance(r, dict)
+        else str_if_bytes(r)
+    ),
+    "XINFO CONSUMERS": lambda r: [
+        {str_if_bytes(key): value for key, value in x.items()} for x in r
+    ],
+    "XINFO GROUPS": lambda r: [
+        {str_if_bytes(key): value for key, value in d.items()} for d in r
+    ],
+}

backend/.venv/lib/python3.12/site-packages/redis/_parsers/hiredis.py

@@ -0,0 +1,301 @@
+import asyncio
+import socket
+import sys
+from logging import getLogger
+from typing import Callable, List, Optional, TypedDict, Union
+
+if sys.version_info.major >= 3 and sys.version_info.minor >= 11:
+    from asyncio import timeout as async_timeout
+else:
+    from async_timeout import timeout as async_timeout
+
+from ..exceptions import ConnectionError, InvalidResponse, RedisError
+from ..typing import EncodableT
+from ..utils import HIREDIS_AVAILABLE
+from .base import (
+    AsyncBaseParser,
+    AsyncPushNotificationsParser,
+    BaseParser,
+    PushNotificationsParser,
+)
+from .socket import (
+    NONBLOCKING_EXCEPTION_ERROR_NUMBERS,
+    NONBLOCKING_EXCEPTIONS,
+    SENTINEL,
+    SERVER_CLOSED_CONNECTION_ERROR,
+)
+
+# Used to signal that hiredis-py does not have enough data to parse.
+# Using `False` or `None` is not reliable, given that the parser can
+# return `False` or `None` for legitimate reasons from RESP payloads.
+NOT_ENOUGH_DATA = object()
+
+
+class _HiredisReaderArgs(TypedDict, total=False):
+    protocolError: Callable[[str], Exception]
+    replyError: Callable[[str], Exception]
+    encoding: Optional[str]
+    errors: Optional[str]
+
+
+class _HiredisParser(BaseParser, PushNotificationsParser):
+    "Parser class for connections using Hiredis"
+
+    def __init__(self, socket_read_size):
+        if not HIREDIS_AVAILABLE:
+            raise RedisError("Hiredis is not installed")
+        self.socket_read_size = socket_read_size
+        self._buffer = bytearray(socket_read_size)
+        self.pubsub_push_handler_func = self.handle_pubsub_push_response
+        self.node_moving_push_handler_func = None
+        self.maintenance_push_handler_func = None
+        self.invalidation_push_handler_func = None
+        self._hiredis_PushNotificationType = None
+
+    def __del__(self):
+        try:
+            self.on_disconnect()
+        except Exception:
+            pass
+
+    def handle_pubsub_push_response(self, response):
+        logger = getLogger("push_response")
+        logger.debug("Push response: " + str(response))
+        return response
+
+    def on_connect(self, connection, **kwargs):
+        import hiredis
+
+        self._sock = connection._sock
+        self._socket_timeout = connection.socket_timeout
+        kwargs = {
+            "protocolError": InvalidResponse,
+            "replyError": self.parse_error,
+            "errors": connection.encoder.encoding_errors,
+            "notEnoughData": NOT_ENOUGH_DATA,
+        }
+
+        if connection.encoder.decode_responses:
+            kwargs["encoding"] = connection.encoder.encoding
+        self._reader = hiredis.Reader(**kwargs)
+        self._next_response = NOT_ENOUGH_DATA
+
+        try:
+            self._hiredis_PushNotificationType = hiredis.PushNotification
+        except AttributeError:
+            # hiredis < 3.2
+            self._hiredis_PushNotificationType = None
+
+    def on_disconnect(self):
+        self._sock = None
+        self._reader = None
+        self._next_response = NOT_ENOUGH_DATA
+
+    def can_read(self, timeout):
+        if not self._reader:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+
+        if self._next_response is NOT_ENOUGH_DATA:
+            self._next_response = self._reader.gets()
+            if self._next_response is NOT_ENOUGH_DATA:
+                return self.read_from_socket(timeout=timeout, raise_on_timeout=False)
+        return True
+
+    def read_from_socket(self, timeout=SENTINEL, raise_on_timeout=True):
+        sock = self._sock
+        custom_timeout = timeout is not SENTINEL
+        try:
+            if custom_timeout:
+                sock.settimeout(timeout)
+            bufflen = self._sock.recv_into(self._buffer)
+            if bufflen == 0:
+                raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+            self._reader.feed(self._buffer, 0, bufflen)
+            # data was read from the socket and added to the buffer.
+            # return True to indicate that data was read.
+            return True
+        except socket.timeout:
+            if raise_on_timeout:
+                raise TimeoutError("Timeout reading from socket")
+            return False
+        except NONBLOCKING_EXCEPTIONS as ex:
+            # if we're in nonblocking mode and the recv raises a
+            # blocking error, simply return False indicating that
+            # there's no data to be read. otherwise raise the
+            # original exception.
+            allowed = NONBLOCKING_EXCEPTION_ERROR_NUMBERS.get(ex.__class__, -1)
+            if not raise_on_timeout and ex.errno == allowed:
+                return False
+            raise ConnectionError(f"Error while reading from socket: {ex.args}")
+        finally:
+            if custom_timeout:
+                sock.settimeout(self._socket_timeout)
+
+    def read_response(self, disable_decoding=False, push_request=False):
+        if not self._reader:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+
+        # _next_response might be cached from a can_read() call
+        if self._next_response is not NOT_ENOUGH_DATA:
+            response = self._next_response
+            self._next_response = NOT_ENOUGH_DATA
+            if self._hiredis_PushNotificationType is not None and isinstance(
+                response, self._hiredis_PushNotificationType
+            ):
+                response = self.handle_push_response(response)
+
+                # if this is a push request return the push response
+                if push_request:
+                    return response
+
+                return self.read_response(
+                    disable_decoding=disable_decoding,
+                    push_request=push_request,
+                )
+            return response
+
+        if disable_decoding:
+            response = self._reader.gets(False)
+        else:
+            response = self._reader.gets()
+
+        while response is NOT_ENOUGH_DATA:
+            self.read_from_socket()
+            if disable_decoding:
+                response = self._reader.gets(False)
+            else:
+                response = self._reader.gets()
+        # if the response is a ConnectionError or the response is a list and
+        # the first item is a ConnectionError, raise it as something bad
+        # happened
+        if isinstance(response, ConnectionError):
+            raise response
+        elif self._hiredis_PushNotificationType is not None and isinstance(
+            response, self._hiredis_PushNotificationType
+        ):
+            response = self.handle_push_response(response)
+            if push_request:
+                return response
+            return self.read_response(
+                disable_decoding=disable_decoding,
+                push_request=push_request,
+            )
+
+        elif (
+            isinstance(response, list)
+            and response
+            and isinstance(response[0], ConnectionError)
+        ):
+            raise response[0]
+        return response
+
+
+class _AsyncHiredisParser(AsyncBaseParser, AsyncPushNotificationsParser):
+    """Async implementation of parser class for connections using Hiredis"""
+
+    __slots__ = ("_reader",)
+
+    def __init__(self, socket_read_size: int):
+        if not HIREDIS_AVAILABLE:
+            raise RedisError("Hiredis is not available.")
+        super().__init__(socket_read_size=socket_read_size)
+        self._reader = None
+        self.pubsub_push_handler_func = self.handle_pubsub_push_response
+        self.invalidation_push_handler_func = None
+        self._hiredis_PushNotificationType = None
+
+    async def handle_pubsub_push_response(self, response):
+        logger = getLogger("push_response")
+        logger.debug("Push response: " + str(response))
+        return response
+
+    def on_connect(self, connection):
+        import hiredis
+
+        self._stream = connection._reader
+        kwargs: _HiredisReaderArgs = {
+            "protocolError": InvalidResponse,
+            "replyError": self.parse_error,
+            "notEnoughData": NOT_ENOUGH_DATA,
+        }
+        if connection.encoder.decode_responses:
+            kwargs["encoding"] = connection.encoder.encoding
+            kwargs["errors"] = connection.encoder.encoding_errors
+
+        self._reader = hiredis.Reader(**kwargs)
+        self._connected = True
+
+        try:
+            self._hiredis_PushNotificationType = getattr(
+                hiredis, "PushNotification", None
+            )
+        except AttributeError:
+            # hiredis < 3.2
+            self._hiredis_PushNotificationType = None
+
+    def on_disconnect(self):
+        self._connected = False
+
+    async def can_read_destructive(self):
+        if not self._connected:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+        if self._reader.gets() is not NOT_ENOUGH_DATA:
+            return True
+        try:
+            async with async_timeout(0):
+                return await self.read_from_socket()
+        except asyncio.TimeoutError:
+            return False
+
+    async def read_from_socket(self):
+        buffer = await self._stream.read(self._read_size)
+        if not buffer or not isinstance(buffer, bytes):
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR) from None
+        self._reader.feed(buffer)
+        # data was read from the socket and added to the buffer.
+        # return True to indicate that data was read.
+        return True
+
+    async def read_response(
+        self, disable_decoding: bool = False, push_request: bool = False
+    ) -> Union[EncodableT, List[EncodableT]]:
+        # If `on_disconnect()` has been called, prohibit any more reads
+        # even if they could happen because data might be present.
+        # We still allow reads in progress to finish
+        if not self._connected:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR) from None
+
+        if disable_decoding:
+            response = self._reader.gets(False)
+        else:
+            response = self._reader.gets()
+
+        while response is NOT_ENOUGH_DATA:
+            await self.read_from_socket()
+            if disable_decoding:
+                response = self._reader.gets(False)
+            else:
+                response = self._reader.gets()
+
+        # if the response is a ConnectionError or the response is a list and
+        # the first item is a ConnectionError, raise it as something bad
+        # happened
+        if isinstance(response, ConnectionError):
+            raise response
+        elif self._hiredis_PushNotificationType is not None and isinstance(
+            response, self._hiredis_PushNotificationType
+        ):
+            response = await self.handle_push_response(response)
+            if not push_request:
+                return await self.read_response(
+                    disable_decoding=disable_decoding, push_request=push_request
+                )
+            else:
+                return response
+        elif (
+            isinstance(response, list)
+            and response
+            and isinstance(response[0], ConnectionError)
+        ):
+            raise response[0]
+        return response

backend/.venv/lib/python3.12/site-packages/redis/_parsers/resp2.py

@@ -0,0 +1,132 @@
+from typing import Any, Union
+
+from ..exceptions import ConnectionError, InvalidResponse, ResponseError
+from ..typing import EncodableT
+from .base import _AsyncRESPBase, _RESPBase
+from .socket import SERVER_CLOSED_CONNECTION_ERROR
+
+
+class _RESP2Parser(_RESPBase):
+    """RESP2 protocol implementation"""
+
+    def read_response(self, disable_decoding=False):
+        pos = self._buffer.get_pos() if self._buffer else None
+        try:
+            result = self._read_response(disable_decoding=disable_decoding)
+        except BaseException:
+            if self._buffer:
+                self._buffer.rewind(pos)
+            raise
+        else:
+            self._buffer.purge()
+            return result
+
+    def _read_response(self, disable_decoding=False):
+        raw = self._buffer.readline()
+        if not raw:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+
+        byte, response = raw[:1], raw[1:]
+
+        # server returned an error
+        if byte == b"-":
+            response = response.decode("utf-8", errors="replace")
+            error = self.parse_error(response)
+            # if the error is a ConnectionError, raise immediately so the user
+            # is notified
+            if isinstance(error, ConnectionError):
+                raise error
+            # otherwise, we're dealing with a ResponseError that might belong
+            # inside a pipeline response. the connection's read_response()
+            # and/or the pipeline's execute() will raise this error if
+            # necessary, so just return the exception instance here.
+            return error
+        # single value
+        elif byte == b"+":
+            pass
+        # int value
+        elif byte == b":":
+            return int(response)
+        # bulk response
+        elif byte == b"$" and response == b"-1":
+            return None
+        elif byte == b"$":
+            response = self._buffer.read(int(response))
+        # multi-bulk response
+        elif byte == b"*" and response == b"-1":
+            return None
+        elif byte == b"*":
+            response = [
+                self._read_response(disable_decoding=disable_decoding)
+                for i in range(int(response))
+            ]
+        else:
+            raise InvalidResponse(f"Protocol Error: {raw!r}")
+
+        if disable_decoding is False:
+            response = self.encoder.decode(response)
+        return response
+
+
+class _AsyncRESP2Parser(_AsyncRESPBase):
+    """Async class for the RESP2 protocol"""
+
+    async def read_response(self, disable_decoding: bool = False):
+        if not self._connected:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+        if self._chunks:
+            # augment parsing buffer with previously read data
+            self._buffer += b"".join(self._chunks)
+            self._chunks.clear()
+        self._pos = 0
+        response = await self._read_response(disable_decoding=disable_decoding)
+        # Successfully parsing a response allows us to clear our parsing buffer
+        self._clear()
+        return response
+
+    async def _read_response(
+        self, disable_decoding: bool = False
+    ) -> Union[EncodableT, ResponseError, None]:
+        raw = await self._readline()
+        response: Any
+        byte, response = raw[:1], raw[1:]
+
+        # server returned an error
+        if byte == b"-":
+            response = response.decode("utf-8", errors="replace")
+            error = self.parse_error(response)
+            # if the error is a ConnectionError, raise immediately so the user
+            # is notified
+            if isinstance(error, ConnectionError):
+                self._clear()  # Successful parse
+                raise error
+            # otherwise, we're dealing with a ResponseError that might belong
+            # inside a pipeline response. the connection's read_response()
+            # and/or the pipeline's execute() will raise this error if
+            # necessary, so just return the exception instance here.
+            return error
+        # single value
+        elif byte == b"+":
+            pass
+        # int value
+        elif byte == b":":
+            return int(response)
+        # bulk response
+        elif byte == b"$" and response == b"-1":
+            return None
+        elif byte == b"$":
+            response = await self._read(int(response))
+        # multi-bulk response
+        elif byte == b"*" and response == b"-1":
+            return None
+        elif byte == b"*":
+            response = [
+                (await self._read_response(disable_decoding))
+                for _ in range(int(response))  # noqa
+            ]
+        else:
+            raise InvalidResponse(f"Protocol Error: {raw!r}")
+
+        if disable_decoding is False:
+            response = self.encoder.decode(response)
+        return response

backend/.venv/lib/python3.12/site-packages/redis/_parsers/resp3.py

@@ -0,0 +1,263 @@
+from logging import getLogger
+from typing import Any, Union
+
+from ..exceptions import ConnectionError, InvalidResponse, ResponseError
+from ..typing import EncodableT
+from .base import (
+    AsyncPushNotificationsParser,
+    PushNotificationsParser,
+    _AsyncRESPBase,
+    _RESPBase,
+)
+from .socket import SERVER_CLOSED_CONNECTION_ERROR
+
+
+class _RESP3Parser(_RESPBase, PushNotificationsParser):
+    """RESP3 protocol implementation"""
+
+    def __init__(self, socket_read_size):
+        super().__init__(socket_read_size)
+        self.pubsub_push_handler_func = self.handle_pubsub_push_response
+        self.node_moving_push_handler_func = None
+        self.maintenance_push_handler_func = None
+        self.invalidation_push_handler_func = None
+
+    def handle_pubsub_push_response(self, response):
+        logger = getLogger("push_response")
+        logger.debug("Push response: " + str(response))
+        return response
+
+    def read_response(self, disable_decoding=False, push_request=False):
+        pos = self._buffer.get_pos() if self._buffer else None
+        try:
+            result = self._read_response(
+                disable_decoding=disable_decoding, push_request=push_request
+            )
+        except BaseException:
+            if self._buffer:
+                self._buffer.rewind(pos)
+            raise
+        else:
+            self._buffer.purge()
+            return result
+
+    def _read_response(self, disable_decoding=False, push_request=False):
+        raw = self._buffer.readline()
+        if not raw:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+
+        byte, response = raw[:1], raw[1:]
+
+        # server returned an error
+        if byte in (b"-", b"!"):
+            if byte == b"!":
+                response = self._buffer.read(int(response))
+            response = response.decode("utf-8", errors="replace")
+            error = self.parse_error(response)
+            # if the error is a ConnectionError, raise immediately so the user
+            # is notified
+            if isinstance(error, ConnectionError):
+                raise error
+            # otherwise, we're dealing with a ResponseError that might belong
+            # inside a pipeline response. the connection's read_response()
+            # and/or the pipeline's execute() will raise this error if
+            # necessary, so just return the exception instance here.
+            return error
+        # single value
+        elif byte == b"+":
+            pass
+        # null value
+        elif byte == b"_":
+            return None
+        # int and big int values
+        elif byte in (b":", b"("):
+            return int(response)
+        # double value
+        elif byte == b",":
+            return float(response)
+        # bool value
+        elif byte == b"#":
+            return response == b"t"
+        # bulk response
+        elif byte == b"$":
+            response = self._buffer.read(int(response))
+        # verbatim string response
+        elif byte == b"=":
+            response = self._buffer.read(int(response))[4:]
+        # array response
+        elif byte == b"*":
+            response = [
+                self._read_response(disable_decoding=disable_decoding)
+                for _ in range(int(response))
+            ]
+        # set response
+        elif byte == b"~":
+            # redis can return unhashable types (like dict) in a set,
+            # so we return sets as list, all the time, for predictability
+            response = [
+                self._read_response(disable_decoding=disable_decoding)
+                for _ in range(int(response))
+            ]
+        # map response
+        elif byte == b"%":
+            # We cannot use a dict-comprehension to parse stream.
+            # Evaluation order of key:val expression in dict comprehension only
+            # became defined to be left-right in version 3.8
+            resp_dict = {}
+            for _ in range(int(response)):
+                key = self._read_response(disable_decoding=disable_decoding)
+                resp_dict[key] = self._read_response(
+                    disable_decoding=disable_decoding, push_request=push_request
+                )
+            response = resp_dict
+        # push response
+        elif byte == b">":
+            response = [
+                self._read_response(
+                    disable_decoding=disable_decoding, push_request=push_request
+                )
+                for _ in range(int(response))
+            ]
+            response = self.handle_push_response(response)
+
+            # if this is a push request return the push response
+            if push_request:
+                return response
+
+            return self._read_response(
+                disable_decoding=disable_decoding,
+                push_request=push_request,
+            )
+        else:
+            raise InvalidResponse(f"Protocol Error: {raw!r}")
+
+        if isinstance(response, bytes) and disable_decoding is False:
+            response = self.encoder.decode(response)
+
+        return response
+
+
+class _AsyncRESP3Parser(_AsyncRESPBase, AsyncPushNotificationsParser):
+    def __init__(self, socket_read_size):
+        super().__init__(socket_read_size)
+        self.pubsub_push_handler_func = self.handle_pubsub_push_response
+        self.invalidation_push_handler_func = None
+
+    async def handle_pubsub_push_response(self, response):
+        logger = getLogger("push_response")
+        logger.debug("Push response: " + str(response))
+        return response
+
+    async def read_response(
+        self, disable_decoding: bool = False, push_request: bool = False
+    ):
+        if self._chunks:
+            # augment parsing buffer with previously read data
+            self._buffer += b"".join(self._chunks)
+            self._chunks.clear()
+        self._pos = 0
+        response = await self._read_response(
+            disable_decoding=disable_decoding, push_request=push_request
+        )
+        # Successfully parsing a response allows us to clear our parsing buffer
+        self._clear()
+        return response
+
+    async def _read_response(
+        self, disable_decoding: bool = False, push_request: bool = False
+    ) -> Union[EncodableT, ResponseError, None]:
+        if not self._stream or not self.encoder:
+            raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+        raw = await self._readline()
+        response: Any
+        byte, response = raw[:1], raw[1:]
+
+        # if byte not in (b"-", b"+", b":", b"$", b"*"):
+        #     raise InvalidResponse(f"Protocol Error: {raw!r}")
+
+        # server returned an error
+        if byte in (b"-", b"!"):
+            if byte == b"!":
+                response = await self._read(int(response))
+            response = response.decode("utf-8", errors="replace")
+            error = self.parse_error(response)
+            # if the error is a ConnectionError, raise immediately so the user
+            # is notified
+            if isinstance(error, ConnectionError):
+                self._clear()  # Successful parse
+                raise error
+            # otherwise, we're dealing with a ResponseError that might belong
+            # inside a pipeline response. the connection's read_response()
+            # and/or the pipeline's execute() will raise this error if
+            # necessary, so just return the exception instance here.
+            return error
+        # single value
+        elif byte == b"+":
+            pass
+        # null value
+        elif byte == b"_":
+            return None
+        # int and big int values
+        elif byte in (b":", b"("):
+            return int(response)
+        # double value
+        elif byte == b",":
+            return float(response)
+        # bool value
+        elif byte == b"#":
+            return response == b"t"
+        # bulk response
+        elif byte == b"$":
+            response = await self._read(int(response))
+        # verbatim string response
+        elif byte == b"=":
+            response = (await self._read(int(response)))[4:]
+        # array response
+        elif byte == b"*":
+            response = [
+                (await self._read_response(disable_decoding=disable_decoding))
+                for _ in range(int(response))
+            ]
+        # set response
+        elif byte == b"~":
+            # redis can return unhashable types (like dict) in a set,
+            # so we always convert to a list, to have predictable return types
+            response = [
+                (await self._read_response(disable_decoding=disable_decoding))
+                for _ in range(int(response))
+            ]
+        # map response
+        elif byte == b"%":
+            # We cannot use a dict-comprehension to parse stream.
+            # Evaluation order of key:val expression in dict comprehension only
+            # became defined to be left-right in version 3.8
+            resp_dict = {}
+            for _ in range(int(response)):
+                key = await self._read_response(disable_decoding=disable_decoding)
+                resp_dict[key] = await self._read_response(
+                    disable_decoding=disable_decoding, push_request=push_request
+                )
+            response = resp_dict
+        # push response
+        elif byte == b">":
+            response = [
+                (
+                    await self._read_response(
+                        disable_decoding=disable_decoding, push_request=push_request
+                    )
+                )
+                for _ in range(int(response))
+            ]
+            response = await self.handle_push_response(response)
+            if not push_request:
+                return await self._read_response(
+                    disable_decoding=disable_decoding, push_request=push_request
+                )
+            else:
+                return response
+        else:
+            raise InvalidResponse(f"Protocol Error: {raw!r}")
+
+        if isinstance(response, bytes) and disable_decoding is False:
+            response = self.encoder.decode(response)
+        return response

backend/.venv/lib/python3.12/site-packages/redis/_parsers/socket.py

@@ -0,0 +1,162 @@
+import errno
+import io
+import socket
+from io import SEEK_END
+from typing import Optional, Union
+
+from ..exceptions import ConnectionError, TimeoutError
+from ..utils import SSL_AVAILABLE
+
+NONBLOCKING_EXCEPTION_ERROR_NUMBERS = {BlockingIOError: errno.EWOULDBLOCK}
+
+if SSL_AVAILABLE:
+    import ssl
+
+    if hasattr(ssl, "SSLWantReadError"):
+        NONBLOCKING_EXCEPTION_ERROR_NUMBERS[ssl.SSLWantReadError] = 2
+        NONBLOCKING_EXCEPTION_ERROR_NUMBERS[ssl.SSLWantWriteError] = 2
+    else:
+        NONBLOCKING_EXCEPTION_ERROR_NUMBERS[ssl.SSLError] = 2
+
+NONBLOCKING_EXCEPTIONS = tuple(NONBLOCKING_EXCEPTION_ERROR_NUMBERS.keys())
+
+SERVER_CLOSED_CONNECTION_ERROR = "Connection closed by server."
+SENTINEL = object()
+
+SYM_CRLF = b"\r\n"
+
+
+class SocketBuffer:
+    def __init__(
+        self, socket: socket.socket, socket_read_size: int, socket_timeout: float
+    ):
+        self._sock = socket
+        self.socket_read_size = socket_read_size
+        self.socket_timeout = socket_timeout
+        self._buffer = io.BytesIO()
+
+    def unread_bytes(self) -> int:
+        """
+        Remaining unread length of buffer
+        """
+        pos = self._buffer.tell()
+        end = self._buffer.seek(0, SEEK_END)
+        self._buffer.seek(pos)
+        return end - pos
+
+    def _read_from_socket(
+        self,
+        length: Optional[int] = None,
+        timeout: Union[float, object] = SENTINEL,
+        raise_on_timeout: Optional[bool] = True,
+    ) -> bool:
+        sock = self._sock
+        socket_read_size = self.socket_read_size
+        marker = 0
+        custom_timeout = timeout is not SENTINEL
+
+        buf = self._buffer
+        current_pos = buf.tell()
+        buf.seek(0, SEEK_END)
+        if custom_timeout:
+            sock.settimeout(timeout)
+        try:
+            while True:
+                data = self._sock.recv(socket_read_size)
+                # an empty string indicates the server shutdown the socket
+                if isinstance(data, bytes) and len(data) == 0:
+                    raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
+                buf.write(data)
+                data_length = len(data)
+                marker += data_length
+
+                if length is not None and length > marker:
+                    continue
+                return True
+        except socket.timeout:
+            if raise_on_timeout:
+                raise TimeoutError("Timeout reading from socket")
+            return False
+        except NONBLOCKING_EXCEPTIONS as ex:
+            # if we're in nonblocking mode and the recv raises a
+            # blocking error, simply return False indicating that
+            # there's no data to be read. otherwise raise the
+            # original exception.
+            allowed = NONBLOCKING_EXCEPTION_ERROR_NUMBERS.get(ex.__class__, -1)
+            if not raise_on_timeout and ex.errno == allowed:
+                return False
+            raise ConnectionError(f"Error while reading from socket: {ex.args}")
+        finally:
+            buf.seek(current_pos)
+            if custom_timeout:
+                sock.settimeout(self.socket_timeout)
+
+    def can_read(self, timeout: float) -> bool:
+        return bool(self.unread_bytes()) or self._read_from_socket(
+            timeout=timeout, raise_on_timeout=False
+        )
+
+    def read(self, length: int) -> bytes:
+        length = length + 2  # make sure to read the \r\n terminator
+        # BufferIO will return less than requested if buffer is short
+        data = self._buffer.read(length)
+        missing = length - len(data)
+        if missing:
+            # fill up the buffer and read the remainder
+            self._read_from_socket(missing)
+            data += self._buffer.read(missing)
+        return data[:-2]
+
+    def readline(self) -> bytes:
+        buf = self._buffer
+        data = buf.readline()
+        while not data.endswith(SYM_CRLF):
+            # there's more data in the socket that we need
+            self._read_from_socket()
+            data += buf.readline()
+
+        return data[:-2]
+
+    def get_pos(self) -> int:
+        """
+        Get current read position
+        """
+        return self._buffer.tell()
+
+    def rewind(self, pos: int) -> None:
+        """
+        Rewind the buffer to a specific position, to re-start reading
+        """
+        self._buffer.seek(pos)
+
+    def purge(self) -> None:
+        """
+        After a successful read, purge the read part of buffer
+        """
+        unread = self.unread_bytes()
+
+        # Only if we have read all of the buffer do we truncate, to
+        # reduce the amount of memory thrashing.  This heuristic
+        # can be changed or removed later.
+        if unread > 0:
+            return
+
+        if unread > 0:
+            # move unread data to the front
+            view = self._buffer.getbuffer()
+            view[:unread] = view[-unread:]
+        self._buffer.truncate(unread)
+        self._buffer.seek(0)
+
+    def close(self) -> None:
+        try:
+            self._buffer.close()
+        except Exception:
+            # issue #633 suggests the purge/close somehow raised a
+            # BadFileDescriptor error. Perhaps the client ran out of
+            # memory or something else? It's probably OK to ignore
+            # any error being raised from purge/close since we're
+            # removing the reference to the instance below.
+            pass
+        self._buffer = None
+        self._sock = None

backend/.venv/lib/python3.12/site-packages/redis/asyncio/__init__.py

@@ -0,0 +1,64 @@
+from redis.asyncio.client import Redis, StrictRedis
+from redis.asyncio.cluster import RedisCluster
+from redis.asyncio.connection import (
+    BlockingConnectionPool,
+    Connection,
+    ConnectionPool,
+    SSLConnection,
+    UnixDomainSocketConnection,
+)
+from redis.asyncio.sentinel import (
+    Sentinel,
+    SentinelConnectionPool,
+    SentinelManagedConnection,
+    SentinelManagedSSLConnection,
+)
+from redis.asyncio.utils import from_url
+from redis.backoff import default_backoff
+from redis.exceptions import (
+    AuthenticationError,
+    AuthenticationWrongNumberOfArgsError,
+    BusyLoadingError,
+    ChildDeadlockedError,
+    ConnectionError,
+    DataError,
+    InvalidResponse,
+    OutOfMemoryError,
+    PubSubError,
+    ReadOnlyError,
+    RedisError,
+    ResponseError,
+    TimeoutError,
+    WatchError,
+)
+
+__all__ = [
+    "AuthenticationError",
+    "AuthenticationWrongNumberOfArgsError",
+    "BlockingConnectionPool",
+    "BusyLoadingError",
+    "ChildDeadlockedError",
+    "Connection",
+    "ConnectionError",
+    "ConnectionPool",
+    "DataError",
+    "from_url",
+    "default_backoff",
+    "InvalidResponse",
+    "PubSubError",
+    "OutOfMemoryError",
+    "ReadOnlyError",
+    "Redis",
+    "RedisCluster",
+    "RedisError",
+    "ResponseError",
+    "Sentinel",
+    "SentinelConnectionPool",
+    "SentinelManagedConnection",
+    "SentinelManagedSSLConnection",
+    "SSLConnection",
+    "StrictRedis",
+    "TimeoutError",
+    "UnixDomainSocketConnection",
+    "WatchError",
+]

backend/.venv/lib/python3.12/site-packages/redis/asyncio/http/http_client.py

@@ -0,0 +1,265 @@
+import asyncio
+from abc import ABC, abstractmethod
+from concurrent.futures import ThreadPoolExecutor
+from typing import Any, Mapping, Optional, Union
+
+from redis.http.http_client import HttpClient, HttpResponse
+
+DEFAULT_USER_AGENT = "HttpClient/1.0 (+https://example.invalid)"
+DEFAULT_TIMEOUT = 30.0
+RETRY_STATUS_CODES = {429, 500, 502, 503, 504}
+
+
+class AsyncHTTPClient(ABC):
+    @abstractmethod
+    async def get(
+        self,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        """
+        Invoke HTTP GET request."""
+        pass
+
+    @abstractmethod
+    async def delete(
+        self,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        """
+        Invoke HTTP DELETE request."""
+        pass
+
+    @abstractmethod
+    async def post(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        """
+        Invoke HTTP POST request."""
+        pass
+
+    @abstractmethod
+    async def put(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        """
+        Invoke HTTP PUT request."""
+        pass
+
+    @abstractmethod
+    async def patch(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        """
+        Invoke HTTP PATCH request."""
+        pass
+
+    @abstractmethod
+    async def request(
+        self,
+        method: str,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        body: Optional[Union[bytes, str]] = None,
+        timeout: Optional[float] = None,
+    ) -> HttpResponse:
+        """
+        Invoke HTTP request with given method."""
+        pass
+
+
+class AsyncHTTPClientWrapper(AsyncHTTPClient):
+    """
+    An async wrapper around sync HTTP client with thread pool execution.
+    """
+
+    def __init__(self, client: HttpClient, max_workers: int = 10) -> None:
+        """
+        Initialize a new HTTP client instance.
+
+        Args:
+            client: Sync HTTP client instance.
+            max_workers: Maximum number of concurrent requests.
+
+        The client supports both regular HTTPS with server verification and mutual TLS
+        authentication. For server verification, provide CA certificate information via
+        ca_file, ca_path or ca_data. For mutual TLS, additionally provide a client
+        certificate and key via client_cert_file and client_key_file.
+        """
+        self.client = client
+        self._executor = ThreadPoolExecutor(max_workers=max_workers)
+
+    async def get(
+        self,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor, self.client.get, path, params, headers, timeout, expect_json
+        )
+
+    async def delete(
+        self,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor,
+            self.client.delete,
+            path,
+            params,
+            headers,
+            timeout,
+            expect_json,
+        )
+
+    async def post(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor,
+            self.client.post,
+            path,
+            json_body,
+            data,
+            params,
+            headers,
+            timeout,
+            expect_json,
+        )
+
+    async def put(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor,
+            self.client.put,
+            path,
+            json_body,
+            data,
+            params,
+            headers,
+            timeout,
+            expect_json,
+        )
+
+    async def patch(
+        self,
+        path: str,
+        json_body: Optional[Any] = None,
+        data: Optional[Union[bytes, str]] = None,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        timeout: Optional[float] = None,
+        expect_json: bool = True,
+    ) -> Union[HttpResponse, Any]:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor,
+            self.client.patch,
+            path,
+            json_body,
+            data,
+            params,
+            headers,
+            timeout,
+            expect_json,
+        )
+
+    async def request(
+        self,
+        method: str,
+        path: str,
+        params: Optional[
+            Mapping[str, Union[None, str, int, float, bool, list, tuple]]
+        ] = None,
+        headers: Optional[Mapping[str, str]] = None,
+        body: Optional[Union[bytes, str]] = None,
+        timeout: Optional[float] = None,
+    ) -> HttpResponse:
+        loop = asyncio.get_event_loop()
+        return await loop.run_in_executor(
+            self._executor,
+            self.client.request,
+            method,
+            path,
+            params,
+            headers,
+            body,
+            timeout,
+        )

backend/.venv/lib/python3.12/site-packages/redis/asyncio/lock.py

@@ -0,0 +1,334 @@
+import asyncio
+import logging
+import threading
+import uuid
+from types import SimpleNamespace
+from typing import TYPE_CHECKING, Awaitable, Optional, Union
+
+from redis.exceptions import LockError, LockNotOwnedError
+from redis.typing import Number
+
+if TYPE_CHECKING:
+    from redis.asyncio import Redis, RedisCluster
+
+logger = logging.getLogger(__name__)
+
+
+class Lock:
+    """
+    A shared, distributed Lock. Using Redis for locking allows the Lock
+    to be shared across processes and/or machines.
+
+    It's left to the user to resolve deadlock issues and make sure
+    multiple clients play nicely together.
+    """
+
+    lua_release = None
+    lua_extend = None
+    lua_reacquire = None
+
+    # KEYS[1] - lock name
+    # ARGV[1] - token
+    # return 1 if the lock was released, otherwise 0
+    LUA_RELEASE_SCRIPT = """
+        local token = redis.call('get', KEYS[1])
+        if not token or token ~= ARGV[1] then
+            return 0
+        end
+        redis.call('del', KEYS[1])
+        return 1
+    """
+
+    # KEYS[1] - lock name
+    # ARGV[1] - token
+    # ARGV[2] - additional milliseconds
+    # ARGV[3] - "0" if the additional time should be added to the lock's
+    #           existing ttl or "1" if the existing ttl should be replaced
+    # return 1 if the locks time was extended, otherwise 0
+    LUA_EXTEND_SCRIPT = """
+        local token = redis.call('get', KEYS[1])
+        if not token or token ~= ARGV[1] then
+            return 0
+        end
+        local expiration = redis.call('pttl', KEYS[1])
+        if not expiration then
+            expiration = 0
+        end
+        if expiration < 0 then
+            return 0
+        end
+
+        local newttl = ARGV[2]
+        if ARGV[3] == "0" then
+            newttl = ARGV[2] + expiration
+        end
+        redis.call('pexpire', KEYS[1], newttl)
+        return 1
+    """
+
+    # KEYS[1] - lock name
+    # ARGV[1] - token
+    # ARGV[2] - milliseconds
+    # return 1 if the locks time was reacquired, otherwise 0
+    LUA_REACQUIRE_SCRIPT = """
+        local token = redis.call('get', KEYS[1])
+        if not token or token ~= ARGV[1] then
+            return 0
+        end
+        redis.call('pexpire', KEYS[1], ARGV[2])
+        return 1
+    """
+
+    def __init__(
+        self,
+        redis: Union["Redis", "RedisCluster"],
+        name: Union[str, bytes, memoryview],
+        timeout: Optional[float] = None,
+        sleep: float = 0.1,
+        blocking: bool = True,
+        blocking_timeout: Optional[Number] = None,
+        thread_local: bool = True,
+        raise_on_release_error: bool = True,
+    ):
+        """
+        Create a new Lock instance named ``name`` using the Redis client
+        supplied by ``redis``.
+
+        ``timeout`` indicates a maximum life for the lock in seconds.
+        By default, it will remain locked until release() is called.
+        ``timeout`` can be specified as a float or integer, both representing
+        the number of seconds to wait.
+
+        ``sleep`` indicates the amount of time to sleep in seconds per loop
+        iteration when the lock is in blocking mode and another client is
+        currently holding the lock.
+
+        ``blocking`` indicates whether calling ``acquire`` should block until
+        the lock has been acquired or to fail immediately, causing ``acquire``
+        to return False and the lock not being acquired. Defaults to True.
+        Note this value can be overridden by passing a ``blocking``
+        argument to ``acquire``.
+
+        ``blocking_timeout`` indicates the maximum amount of time in seconds to
+        spend trying to acquire the lock. A value of ``None`` indicates
+        continue trying forever. ``blocking_timeout`` can be specified as a
+        float or integer, both representing the number of seconds to wait.
+
+        ``thread_local`` indicates whether the lock token is placed in
+        thread-local storage. By default, the token is placed in thread local
+        storage so that a thread only sees its token, not a token set by
+        another thread. Consider the following timeline:
+
+            time: 0, thread-1 acquires `my-lock`, with a timeout of 5 seconds.
+                     thread-1 sets the token to "abc"
+            time: 1, thread-2 blocks trying to acquire `my-lock` using the
+                     Lock instance.
+            time: 5, thread-1 has not yet completed. redis expires the lock
+                     key.
+            time: 5, thread-2 acquired `my-lock` now that it's available.
+                     thread-2 sets the token to "xyz"
+            time: 6, thread-1 finishes its work and calls release(). if the
+                     token is *not* stored in thread local storage, then
+                     thread-1 would see the token value as "xyz" and would be
+                     able to successfully release the thread-2's lock.
+
+        ``raise_on_release_error`` indicates whether to raise an exception when
+        the lock is no longer owned when exiting the context manager. By default,
+        this is True, meaning an exception will be raised. If False, the warning
+        will be logged and the exception will be suppressed.
+
+        In some use cases it's necessary to disable thread local storage. For
+        example, if you have code where one thread acquires a lock and passes
+        that lock instance to a worker thread to release later. If thread
+        local storage isn't disabled in this case, the worker thread won't see
+        the token set by the thread that acquired the lock. Our assumption
+        is that these cases aren't common and as such default to using
+        thread local storage.
+        """
+        self.redis = redis
+        self.name = name
+        self.timeout = timeout
+        self.sleep = sleep
+        self.blocking = blocking
+        self.blocking_timeout = blocking_timeout
+        self.thread_local = bool(thread_local)
+        self.local = threading.local() if self.thread_local else SimpleNamespace()
+        self.raise_on_release_error = raise_on_release_error
+        self.local.token = None
+        self.register_scripts()
+
+    def register_scripts(self):
+        cls = self.__class__
+        client = self.redis
+        if cls.lua_release is None:
+            cls.lua_release = client.register_script(cls.LUA_RELEASE_SCRIPT)
+        if cls.lua_extend is None:
+            cls.lua_extend = client.register_script(cls.LUA_EXTEND_SCRIPT)
+        if cls.lua_reacquire is None:
+            cls.lua_reacquire = client.register_script(cls.LUA_REACQUIRE_SCRIPT)
+
+    async def __aenter__(self):
+        if await self.acquire():
+            return self
+        raise LockError("Unable to acquire lock within the time specified")
+
+    async def __aexit__(self, exc_type, exc_value, traceback):
+        try:
+            await self.release()
+        except LockError:
+            if self.raise_on_release_error:
+                raise
+            logger.warning(
+                "Lock was unlocked or no longer owned when exiting context manager."
+            )
+
+    async def acquire(
+        self,
+        blocking: Optional[bool] = None,
+        blocking_timeout: Optional[Number] = None,
+        token: Optional[Union[str, bytes]] = None,
+    ):
+        """
+        Use Redis to hold a shared, distributed lock named ``name``.
+        Returns True once the lock is acquired.
+
+        If ``blocking`` is False, always return immediately. If the lock
+        was acquired, return True, otherwise return False.
+
+        ``blocking_timeout`` specifies the maximum number of seconds to
+        wait trying to acquire the lock.
+
+        ``token`` specifies the token value to be used. If provided, token
+        must be a bytes object or a string that can be encoded to a bytes
+        object with the default encoding. If a token isn't specified, a UUID
+        will be generated.
+        """
+        sleep = self.sleep
+        if token is None:
+            token = uuid.uuid1().hex.encode()
+        else:
+            try:
+                encoder = self.redis.connection_pool.get_encoder()
+            except AttributeError:
+                # Cluster
+                encoder = self.redis.get_encoder()
+            token = encoder.encode(token)
+        if blocking is None:
+            blocking = self.blocking
+        if blocking_timeout is None:
+            blocking_timeout = self.blocking_timeout
+        stop_trying_at = None
+        if blocking_timeout is not None:
+            stop_trying_at = asyncio.get_running_loop().time() + blocking_timeout
+        while True:
+            if await self.do_acquire(token):
+                self.local.token = token
+                return True
+            if not blocking:
+                return False
+            next_try_at = asyncio.get_running_loop().time() + sleep
+            if stop_trying_at is not None and next_try_at > stop_trying_at:
+                return False
+            await asyncio.sleep(sleep)
+
+    async def do_acquire(self, token: Union[str, bytes]) -> bool:
+        if self.timeout:
+            # convert to milliseconds
+            timeout = int(self.timeout * 1000)
+        else:
+            timeout = None
+        if await self.redis.set(self.name, token, nx=True, px=timeout):
+            return True
+        return False
+
+    async def locked(self) -> bool:
+        """
+        Returns True if this key is locked by any process, otherwise False.
+        """
+        return await self.redis.get(self.name) is not None
+
+    async def owned(self) -> bool:
+        """
+        Returns True if this key is locked by this lock, otherwise False.
+        """
+        stored_token = await self.redis.get(self.name)
+        # need to always compare bytes to bytes
+        # TODO: this can be simplified when the context manager is finished
+        if stored_token and not isinstance(stored_token, bytes):
+            try:
+                encoder = self.redis.connection_pool.get_encoder()
+            except AttributeError:
+                # Cluster
+                encoder = self.redis.get_encoder()
+            stored_token = encoder.encode(stored_token)
+        return self.local.token is not None and stored_token == self.local.token
+
+    def release(self) -> Awaitable[None]:
+        """Releases the already acquired lock"""
+        expected_token = self.local.token
+        if expected_token is None:
+            raise LockError(
+                "Cannot release a lock that's not owned or is already unlocked.",
+                lock_name=self.name,
+            )
+        self.local.token = None
+        return self.do_release(expected_token)
+
+    async def do_release(self, expected_token: bytes) -> None:
+        if not bool(
+            await self.lua_release(
+                keys=[self.name], args=[expected_token], client=self.redis
+            )
+        ):
+            raise LockNotOwnedError("Cannot release a lock that's no longer owned")
+
+    def extend(
+        self, additional_time: Number, replace_ttl: bool = False
+    ) -> Awaitable[bool]:
+        """
+        Adds more time to an already acquired lock.
+
+        ``additional_time`` can be specified as an integer or a float, both
+        representing the number of seconds to add.
+
+        ``replace_ttl`` if False (the default), add `additional_time` to
+        the lock's existing ttl. If True, replace the lock's ttl with
+        `additional_time`.
+        """
+        if self.local.token is None:
+            raise LockError("Cannot extend an unlocked lock")
+        if self.timeout is None:
+            raise LockError("Cannot extend a lock with no timeout")
+        return self.do_extend(additional_time, replace_ttl)
+
+    async def do_extend(self, additional_time, replace_ttl) -> bool:
+        additional_time = int(additional_time * 1000)
+        if not bool(
+            await self.lua_extend(
+                keys=[self.name],
+                args=[self.local.token, additional_time, replace_ttl and "1" or "0"],
+                client=self.redis,
+            )
+        ):
+            raise LockNotOwnedError("Cannot extend a lock that's no longer owned")
+        return True
+
+    def reacquire(self) -> Awaitable[bool]:
+        """
+        Resets a TTL of an already acquired lock back to a timeout value.
+        """
+        if self.local.token is None:
+            raise LockError("Cannot reacquire an unlocked lock")
+        if self.timeout is None:
+            raise LockError("Cannot reacquire a lock with no timeout")
+        return self.do_reacquire()
+
+    async def do_reacquire(self) -> bool:
+        timeout = int(self.timeout * 1000)
+        if not bool(
+            await self.lua_reacquire(
+                keys=[self.name], args=[self.local.token, timeout], client=self.redis
+            )
+        ):
+            raise LockNotOwnedError("Cannot reacquire a lock that's no longer owned")
+        return True

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/client.py

@@ -0,0 +1,530 @@
+import asyncio
+import logging
+from typing import Any, Awaitable, Callable, Coroutine, List, Optional, Union
+
+from redis.asyncio.client import PubSubHandler
+from redis.asyncio.multidb.command_executor import DefaultCommandExecutor
+from redis.asyncio.multidb.config import DEFAULT_GRACE_PERIOD, MultiDbConfig
+from redis.asyncio.multidb.database import AsyncDatabase, Databases
+from redis.asyncio.multidb.failure_detector import AsyncFailureDetector
+from redis.asyncio.multidb.healthcheck import HealthCheck, HealthCheckPolicy
+from redis.background import BackgroundScheduler
+from redis.commands import AsyncCoreCommands, AsyncRedisModuleCommands
+from redis.multidb.circuit import CircuitBreaker
+from redis.multidb.circuit import State as CBState
+from redis.multidb.exception import NoValidDatabaseException, UnhealthyDatabaseException
+from redis.typing import ChannelT, EncodableT, KeyT
+from redis.utils import experimental
+
+logger = logging.getLogger(__name__)
+
+
+@experimental
+class MultiDBClient(AsyncRedisModuleCommands, AsyncCoreCommands):
+    """
+    Client that operates on multiple logical Redis databases.
+    Should be used in Active-Active database setups.
+    """
+
+    def __init__(self, config: MultiDbConfig):
+        self._databases = config.databases()
+        self._health_checks = config.default_health_checks()
+
+        if config.health_checks is not None:
+            self._health_checks.extend(config.health_checks)
+
+        self._health_check_interval = config.health_check_interval
+        self._health_check_policy: HealthCheckPolicy = config.health_check_policy.value(
+            config.health_check_probes, config.health_check_delay
+        )
+        self._failure_detectors = config.default_failure_detectors()
+
+        if config.failure_detectors is not None:
+            self._failure_detectors.extend(config.failure_detectors)
+
+        self._failover_strategy = (
+            config.default_failover_strategy()
+            if config.failover_strategy is None
+            else config.failover_strategy
+        )
+        self._failover_strategy.set_databases(self._databases)
+        self._auto_fallback_interval = config.auto_fallback_interval
+        self._event_dispatcher = config.event_dispatcher
+        self._command_retry = config.command_retry
+        self._command_retry.update_supported_errors([ConnectionRefusedError])
+        self.command_executor = DefaultCommandExecutor(
+            failure_detectors=self._failure_detectors,
+            databases=self._databases,
+            command_retry=self._command_retry,
+            failover_strategy=self._failover_strategy,
+            failover_attempts=config.failover_attempts,
+            failover_delay=config.failover_delay,
+            event_dispatcher=self._event_dispatcher,
+            auto_fallback_interval=self._auto_fallback_interval,
+        )
+        self.initialized = False
+        self._hc_lock = asyncio.Lock()
+        self._bg_scheduler = BackgroundScheduler()
+        self._config = config
+        self._recurring_hc_task = None
+        self._hc_tasks = []
+        self._half_open_state_task = None
+
+    async def __aenter__(self: "MultiDBClient") -> "MultiDBClient":
+        if not self.initialized:
+            await self.initialize()
+        return self
+
+    async def __aexit__(self, exc_type, exc_value, traceback):
+        if self._recurring_hc_task:
+            self._recurring_hc_task.cancel()
+        if self._half_open_state_task:
+            self._half_open_state_task.cancel()
+        for hc_task in self._hc_tasks:
+            hc_task.cancel()
+
+    async def initialize(self):
+        """
+        Perform initialization of databases to define their initial state.
+        """
+
+        async def raise_exception_on_failed_hc(error):
+            raise error
+
+        # Initial databases check to define initial state
+        await self._check_databases_health(on_error=raise_exception_on_failed_hc)
+
+        # Starts recurring health checks on the background.
+        self._recurring_hc_task = asyncio.create_task(
+            self._bg_scheduler.run_recurring_async(
+                self._health_check_interval,
+                self._check_databases_health,
+            )
+        )
+
+        is_active_db_found = False
+
+        for database, weight in self._databases:
+            # Set on state changed callback for each circuit.
+            database.circuit.on_state_changed(self._on_circuit_state_change_callback)
+
+            # Set states according to a weights and circuit state
+            if database.circuit.state == CBState.CLOSED and not is_active_db_found:
+                await self.command_executor.set_active_database(database)
+                is_active_db_found = True
+
+        if not is_active_db_found:
+            raise NoValidDatabaseException(
+                "Initial connection failed - no active database found"
+            )
+
+        self.initialized = True
+
+    def get_databases(self) -> Databases:
+        """
+        Returns a sorted (by weight) list of all databases.
+        """
+        return self._databases
+
+    async def set_active_database(self, database: AsyncDatabase) -> None:
+        """
+        Promote one of the existing databases to become an active.
+        """
+        exists = None
+
+        for existing_db, _ in self._databases:
+            if existing_db == database:
+                exists = True
+                break
+
+        if not exists:
+            raise ValueError("Given database is not a member of database list")
+
+        await self._check_db_health(database)
+
+        if database.circuit.state == CBState.CLOSED:
+            highest_weighted_db, _ = self._databases.get_top_n(1)[0]
+            await self.command_executor.set_active_database(database)
+            return
+
+        raise NoValidDatabaseException(
+            "Cannot set active database, database is unhealthy"
+        )
+
+    async def add_database(self, database: AsyncDatabase):
+        """
+        Adds a new database to the database list.
+        """
+        for existing_db, _ in self._databases:
+            if existing_db == database:
+                raise ValueError("Given database already exists")
+
+        await self._check_db_health(database)
+
+        highest_weighted_db, highest_weight = self._databases.get_top_n(1)[0]
+        self._databases.add(database, database.weight)
+        await self._change_active_database(database, highest_weighted_db)
+
+    async def _change_active_database(
+        self, new_database: AsyncDatabase, highest_weight_database: AsyncDatabase
+    ):
+        if (
+            new_database.weight > highest_weight_database.weight
+            and new_database.circuit.state == CBState.CLOSED
+        ):
+            await self.command_executor.set_active_database(new_database)
+
+    async def remove_database(self, database: AsyncDatabase):
+        """
+        Removes a database from the database list.
+        """
+        weight = self._databases.remove(database)
+        highest_weighted_db, highest_weight = self._databases.get_top_n(1)[0]
+
+        if (
+            highest_weight <= weight
+            and highest_weighted_db.circuit.state == CBState.CLOSED
+        ):
+            await self.command_executor.set_active_database(highest_weighted_db)
+
+    async def update_database_weight(self, database: AsyncDatabase, weight: float):
+        """
+        Updates a database from the database list.
+        """
+        exists = None
+
+        for existing_db, _ in self._databases:
+            if existing_db == database:
+                exists = True
+                break
+
+        if not exists:
+            raise ValueError("Given database is not a member of database list")
+
+        highest_weighted_db, highest_weight = self._databases.get_top_n(1)[0]
+        self._databases.update_weight(database, weight)
+        database.weight = weight
+        await self._change_active_database(database, highest_weighted_db)
+
+    def add_failure_detector(self, failure_detector: AsyncFailureDetector):
+        """
+        Adds a new failure detector to the database.
+        """
+        self._failure_detectors.append(failure_detector)
+
+    async def add_health_check(self, healthcheck: HealthCheck):
+        """
+        Adds a new health check to the database.
+        """
+        async with self._hc_lock:
+            self._health_checks.append(healthcheck)
+
+    async def execute_command(self, *args, **options):
+        """
+        Executes a single command and return its result.
+        """
+        if not self.initialized:
+            await self.initialize()
+
+        return await self.command_executor.execute_command(*args, **options)
+
+    def pipeline(self):
+        """
+        Enters into pipeline mode of the client.
+        """
+        return Pipeline(self)
+
+    async def transaction(
+        self,
+        func: Callable[["Pipeline"], Union[Any, Awaitable[Any]]],
+        *watches: KeyT,
+        shard_hint: Optional[str] = None,
+        value_from_callable: bool = False,
+        watch_delay: Optional[float] = None,
+    ):
+        """
+        Executes callable as transaction.
+        """
+        if not self.initialized:
+            await self.initialize()
+
+        return await self.command_executor.execute_transaction(
+            func,
+            *watches,
+            shard_hint=shard_hint,
+            value_from_callable=value_from_callable,
+            watch_delay=watch_delay,
+        )
+
+    async def pubsub(self, **kwargs):
+        """
+        Return a Publish/Subscribe object. With this object, you can
+        subscribe to channels and listen for messages that get published to
+        them.
+        """
+        if not self.initialized:
+            await self.initialize()
+
+        return PubSub(self, **kwargs)
+
+    async def _check_databases_health(
+        self,
+        on_error: Optional[Callable[[Exception], Coroutine[Any, Any, None]]] = None,
+    ):
+        """
+        Runs health checks as a recurring task.
+        Runs health checks against all databases.
+        """
+        try:
+            self._hc_tasks = [
+                asyncio.create_task(self._check_db_health(database))
+                for database, _ in self._databases
+            ]
+            results = await asyncio.wait_for(
+                asyncio.gather(
+                    *self._hc_tasks,
+                    return_exceptions=True,
+                ),
+                timeout=self._health_check_interval,
+            )
+        except asyncio.TimeoutError:
+            raise asyncio.TimeoutError(
+                "Health check execution exceeds health_check_interval"
+            )
+
+        for result in results:
+            if isinstance(result, UnhealthyDatabaseException):
+                unhealthy_db = result.database
+                unhealthy_db.circuit.state = CBState.OPEN
+
+                logger.exception(
+                    "Health check failed, due to exception",
+                    exc_info=result.original_exception,
+                )
+
+                if on_error:
+                    on_error(result.original_exception)
+
+    async def _check_db_health(self, database: AsyncDatabase) -> bool:
+        """
+        Runs health checks on the given database until first failure.
+        """
+        # Health check will setup circuit state
+        is_healthy = await self._health_check_policy.execute(
+            self._health_checks, database
+        )
+
+        if not is_healthy:
+            if database.circuit.state != CBState.OPEN:
+                database.circuit.state = CBState.OPEN
+            return is_healthy
+        elif is_healthy and database.circuit.state != CBState.CLOSED:
+            database.circuit.state = CBState.CLOSED
+
+        return is_healthy
+
+    def _on_circuit_state_change_callback(
+        self, circuit: CircuitBreaker, old_state: CBState, new_state: CBState
+    ):
+        loop = asyncio.get_running_loop()
+
+        if new_state == CBState.HALF_OPEN:
+            self._half_open_state_task = asyncio.create_task(
+                self._check_db_health(circuit.database)
+            )
+            return
+
+        if old_state == CBState.CLOSED and new_state == CBState.OPEN:
+            loop.call_later(DEFAULT_GRACE_PERIOD, _half_open_circuit, circuit)
+
+    async def aclose(self):
+        if self.command_executor.active_database:
+            await self.command_executor.active_database.client.aclose()
+
+
+def _half_open_circuit(circuit: CircuitBreaker):
+    circuit.state = CBState.HALF_OPEN
+
+
+class Pipeline(AsyncRedisModuleCommands, AsyncCoreCommands):
+    """
+    Pipeline implementation for multiple logical Redis databases.
+    """
+
+    def __init__(self, client: MultiDBClient):
+        self._command_stack = []
+        self._client = client
+
+    async def __aenter__(self: "Pipeline") -> "Pipeline":
+        return self
+
+    async def __aexit__(self, exc_type, exc_value, traceback):
+        await self.reset()
+        await self._client.__aexit__(exc_type, exc_value, traceback)
+
+    def __await__(self):
+        return self._async_self().__await__()
+
+    async def _async_self(self):
+        return self
+
+    def __len__(self) -> int:
+        return len(self._command_stack)
+
+    def __bool__(self) -> bool:
+        """Pipeline instances should always evaluate to True"""
+        return True
+
+    async def reset(self) -> None:
+        self._command_stack = []
+
+    async def aclose(self) -> None:
+        """Close the pipeline"""
+        await self.reset()
+
+    def pipeline_execute_command(self, *args, **options) -> "Pipeline":
+        """
+        Stage a command to be executed when execute() is next called
+
+        Returns the current Pipeline object back so commands can be
+        chained together, such as:
+
+        pipe = pipe.set('foo', 'bar').incr('baz').decr('bang')
+
+        At some other point, you can then run: pipe.execute(),
+        which will execute all commands queued in the pipe.
+        """
+        self._command_stack.append((args, options))
+        return self
+
+    def execute_command(self, *args, **kwargs):
+        """Adds a command to the stack"""
+        return self.pipeline_execute_command(*args, **kwargs)
+
+    async def execute(self) -> List[Any]:
+        """Execute all the commands in the current pipeline"""
+        if not self._client.initialized:
+            await self._client.initialize()
+
+        try:
+            return await self._client.command_executor.execute_pipeline(
+                tuple(self._command_stack)
+            )
+        finally:
+            await self.reset()
+
+
+class PubSub:
+    """
+    PubSub object for multi database client.
+    """
+
+    def __init__(self, client: MultiDBClient, **kwargs):
+        """Initialize the PubSub object for a multi-database client.
+
+        Args:
+            client: MultiDBClient instance to use for pub/sub operations
+            **kwargs: Additional keyword arguments to pass to the underlying pubsub implementation
+        """
+
+        self._client = client
+        self._client.command_executor.pubsub(**kwargs)
+
+    async def __aenter__(self) -> "PubSub":
+        return self
+
+    async def __aexit__(self, exc_type, exc_value, traceback) -> None:
+        await self.aclose()
+
+    async def aclose(self):
+        return await self._client.command_executor.execute_pubsub_method("aclose")
+
+    @property
+    def subscribed(self) -> bool:
+        return self._client.command_executor.active_pubsub.subscribed
+
+    async def execute_command(self, *args: EncodableT):
+        return await self._client.command_executor.execute_pubsub_method(
+            "execute_command", *args
+        )
+
+    async def psubscribe(self, *args: ChannelT, **kwargs: PubSubHandler):
+        """
+        Subscribe to channel patterns. Patterns supplied as keyword arguments
+        expect a pattern name as the key and a callable as the value. A
+        pattern's callable will be invoked automatically when a message is
+        received on that pattern rather than producing a message via
+        ``listen()``.
+        """
+        return await self._client.command_executor.execute_pubsub_method(
+            "psubscribe", *args, **kwargs
+        )
+
+    async def punsubscribe(self, *args: ChannelT):
+        """
+        Unsubscribe from the supplied patterns. If empty, unsubscribe from
+        all patterns.
+        """
+        return await self._client.command_executor.execute_pubsub_method(
+            "punsubscribe", *args
+        )
+
+    async def subscribe(self, *args: ChannelT, **kwargs: Callable):
+        """
+        Subscribe to channels. Channels supplied as keyword arguments expect
+        a channel name as the key and a callable as the value. A channel's
+        callable will be invoked automatically when a message is received on
+        that channel rather than producing a message via ``listen()`` or
+        ``get_message()``.
+        """
+        return await self._client.command_executor.execute_pubsub_method(
+            "subscribe", *args, **kwargs
+        )
+
+    async def unsubscribe(self, *args):
+        """
+        Unsubscribe from the supplied channels. If empty, unsubscribe from
+        all channels
+        """
+        return await self._client.command_executor.execute_pubsub_method(
+            "unsubscribe", *args
+        )
+
+    async def get_message(
+        self, ignore_subscribe_messages: bool = False, timeout: Optional[float] = 0.0
+    ):
+        """
+        Get the next message if one is available, otherwise None.
+
+        If timeout is specified, the system will wait for `timeout` seconds
+        before returning. Timeout should be specified as a floating point
+        number or None to wait indefinitely.
+        """
+        return await self._client.command_executor.execute_pubsub_method(
+            "get_message",
+            ignore_subscribe_messages=ignore_subscribe_messages,
+            timeout=timeout,
+        )
+
+    async def run(
+        self,
+        *,
+        exception_handler=None,
+        poll_timeout: float = 1.0,
+    ) -> None:
+        """Process pub/sub messages using registered callbacks.
+
+        This is the equivalent of :py:meth:`redis.PubSub.run_in_thread` in
+        redis-py, but it is a coroutine. To launch it as a separate task, use
+        ``asyncio.create_task``:
+
+            >>> task = asyncio.create_task(pubsub.run())
+
+        To shut it down, use asyncio cancellation:
+
+            >>> task.cancel()
+            >>> await task
+        """
+        return await self._client.command_executor.execute_pubsub_run(
+            sleep_time=poll_timeout, exception_handler=exception_handler, pubsub=self
+        )

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/command_executor.py

@@ -0,0 +1,339 @@
+from abc import abstractmethod
+from asyncio import iscoroutinefunction
+from datetime import datetime
+from typing import Any, Awaitable, Callable, List, Optional, Union
+
+from redis.asyncio import RedisCluster
+from redis.asyncio.client import Pipeline, PubSub
+from redis.asyncio.multidb.database import AsyncDatabase, Database, Databases
+from redis.asyncio.multidb.event import (
+    AsyncActiveDatabaseChanged,
+    CloseConnectionOnActiveDatabaseChanged,
+    RegisterCommandFailure,
+    ResubscribeOnActiveDatabaseChanged,
+)
+from redis.asyncio.multidb.failover import (
+    DEFAULT_FAILOVER_ATTEMPTS,
+    DEFAULT_FAILOVER_DELAY,
+    AsyncFailoverStrategy,
+    DefaultFailoverStrategyExecutor,
+    FailoverStrategyExecutor,
+)
+from redis.asyncio.multidb.failure_detector import AsyncFailureDetector
+from redis.asyncio.retry import Retry
+from redis.event import AsyncOnCommandsFailEvent, EventDispatcherInterface
+from redis.multidb.circuit import State as CBState
+from redis.multidb.command_executor import BaseCommandExecutor, CommandExecutor
+from redis.multidb.config import DEFAULT_AUTO_FALLBACK_INTERVAL
+from redis.typing import KeyT
+
+
+class AsyncCommandExecutor(CommandExecutor):
+    @property
+    @abstractmethod
+    def databases(self) -> Databases:
+        """Returns a list of databases."""
+        pass
+
+    @property
+    @abstractmethod
+    def failure_detectors(self) -> List[AsyncFailureDetector]:
+        """Returns a list of failure detectors."""
+        pass
+
+    @abstractmethod
+    def add_failure_detector(self, failure_detector: AsyncFailureDetector) -> None:
+        """Adds a new failure detector to the list of failure detectors."""
+        pass
+
+    @property
+    @abstractmethod
+    def active_database(self) -> Optional[AsyncDatabase]:
+        """Returns currently active database."""
+        pass
+
+    @abstractmethod
+    async def set_active_database(self, database: AsyncDatabase) -> None:
+        """Sets the currently active database."""
+        pass
+
+    @property
+    @abstractmethod
+    def active_pubsub(self) -> Optional[PubSub]:
+        """Returns currently active pubsub."""
+        pass
+
+    @active_pubsub.setter
+    @abstractmethod
+    def active_pubsub(self, pubsub: PubSub) -> None:
+        """Sets currently active pubsub."""
+        pass
+
+    @property
+    @abstractmethod
+    def failover_strategy_executor(self) -> FailoverStrategyExecutor:
+        """Returns failover strategy executor."""
+        pass
+
+    @property
+    @abstractmethod
+    def command_retry(self) -> Retry:
+        """Returns command retry object."""
+        pass
+
+    @abstractmethod
+    async def pubsub(self, **kwargs):
+        """Initializes a PubSub object on a currently active database"""
+        pass
+
+    @abstractmethod
+    async def execute_command(self, *args, **options):
+        """Executes a command and returns the result."""
+        pass
+
+    @abstractmethod
+    async def execute_pipeline(self, command_stack: tuple):
+        """Executes a stack of commands in pipeline."""
+        pass
+
+    @abstractmethod
+    async def execute_transaction(
+        self, transaction: Callable[[Pipeline], None], *watches, **options
+    ):
+        """Executes a transaction block wrapped in callback."""
+        pass
+
+    @abstractmethod
+    async def execute_pubsub_method(self, method_name: str, *args, **kwargs):
+        """Executes a given method on active pub/sub."""
+        pass
+
+    @abstractmethod
+    async def execute_pubsub_run(self, sleep_time: float, **kwargs) -> Any:
+        """Executes pub/sub run in a thread."""
+        pass
+
+
+class DefaultCommandExecutor(BaseCommandExecutor, AsyncCommandExecutor):
+    def __init__(
+        self,
+        failure_detectors: List[AsyncFailureDetector],
+        databases: Databases,
+        command_retry: Retry,
+        failover_strategy: AsyncFailoverStrategy,
+        event_dispatcher: EventDispatcherInterface,
+        failover_attempts: int = DEFAULT_FAILOVER_ATTEMPTS,
+        failover_delay: float = DEFAULT_FAILOVER_DELAY,
+        auto_fallback_interval: float = DEFAULT_AUTO_FALLBACK_INTERVAL,
+    ):
+        """
+        Initialize the DefaultCommandExecutor instance.
+
+        Args:
+            failure_detectors: List of failure detector instances to monitor database health
+            databases: Collection of available databases to execute commands on
+            command_retry: Retry policy for failed command execution
+            failover_strategy: Strategy for handling database failover
+            event_dispatcher: Interface for dispatching events
+            failover_attempts: Number of failover attempts
+            failover_delay: Delay between failover attempts
+            auto_fallback_interval: Time interval in seconds between attempts to fall back to a primary database
+        """
+        super().__init__(auto_fallback_interval)
+
+        for fd in failure_detectors:
+            fd.set_command_executor(command_executor=self)
+
+        self._databases = databases
+        self._failure_detectors = failure_detectors
+        self._command_retry = command_retry
+        self._failover_strategy_executor = DefaultFailoverStrategyExecutor(
+            failover_strategy, failover_attempts, failover_delay
+        )
+        self._event_dispatcher = event_dispatcher
+        self._active_database: Optional[Database] = None
+        self._active_pubsub: Optional[PubSub] = None
+        self._active_pubsub_kwargs = {}
+        self._setup_event_dispatcher()
+        self._schedule_next_fallback()
+
+    @property
+    def databases(self) -> Databases:
+        return self._databases
+
+    @property
+    def failure_detectors(self) -> List[AsyncFailureDetector]:
+        return self._failure_detectors
+
+    def add_failure_detector(self, failure_detector: AsyncFailureDetector) -> None:
+        self._failure_detectors.append(failure_detector)
+
+    @property
+    def active_database(self) -> Optional[AsyncDatabase]:
+        return self._active_database
+
+    async def set_active_database(self, database: AsyncDatabase) -> None:
+        old_active = self._active_database
+        self._active_database = database
+
+        if old_active is not None and old_active is not database:
+            await self._event_dispatcher.dispatch_async(
+                AsyncActiveDatabaseChanged(
+                    old_active,
+                    self._active_database,
+                    self,
+                    **self._active_pubsub_kwargs,
+                )
+            )
+
+    @property
+    def active_pubsub(self) -> Optional[PubSub]:
+        return self._active_pubsub
+
+    @active_pubsub.setter
+    def active_pubsub(self, pubsub: PubSub) -> None:
+        self._active_pubsub = pubsub
+
+    @property
+    def failover_strategy_executor(self) -> FailoverStrategyExecutor:
+        return self._failover_strategy_executor
+
+    @property
+    def command_retry(self) -> Retry:
+        return self._command_retry
+
+    def pubsub(self, **kwargs):
+        if self._active_pubsub is None:
+            if isinstance(self._active_database.client, RedisCluster):
+                raise ValueError("PubSub is not supported for RedisCluster")
+
+            self._active_pubsub = self._active_database.client.pubsub(**kwargs)
+            self._active_pubsub_kwargs = kwargs
+
+    async def execute_command(self, *args, **options):
+        async def callback():
+            response = await self._active_database.client.execute_command(
+                *args, **options
+            )
+            await self._register_command_execution(args)
+            return response
+
+        return await self._execute_with_failure_detection(callback, args)
+
+    async def execute_pipeline(self, command_stack: tuple):
+        async def callback():
+            async with self._active_database.client.pipeline() as pipe:
+                for command, options in command_stack:
+                    pipe.execute_command(*command, **options)
+
+                response = await pipe.execute()
+                await self._register_command_execution(command_stack)
+                return response
+
+        return await self._execute_with_failure_detection(callback, command_stack)
+
+    async def execute_transaction(
+        self,
+        func: Callable[["Pipeline"], Union[Any, Awaitable[Any]]],
+        *watches: KeyT,
+        shard_hint: Optional[str] = None,
+        value_from_callable: bool = False,
+        watch_delay: Optional[float] = None,
+    ):
+        async def callback():
+            response = await self._active_database.client.transaction(
+                func,
+                *watches,
+                shard_hint=shard_hint,
+                value_from_callable=value_from_callable,
+                watch_delay=watch_delay,
+            )
+            await self._register_command_execution(())
+            return response
+
+        return await self._execute_with_failure_detection(callback)
+
+    async def execute_pubsub_method(self, method_name: str, *args, **kwargs):
+        async def callback():
+            method = getattr(self.active_pubsub, method_name)
+            if iscoroutinefunction(method):
+                response = await method(*args, **kwargs)
+            else:
+                response = method(*args, **kwargs)
+
+            await self._register_command_execution(args)
+            return response
+
+        return await self._execute_with_failure_detection(callback, *args)
+
+    async def execute_pubsub_run(
+        self, sleep_time: float, exception_handler=None, pubsub=None
+    ) -> Any:
+        async def callback():
+            return await self._active_pubsub.run(
+                poll_timeout=sleep_time,
+                exception_handler=exception_handler,
+                pubsub=pubsub,
+            )
+
+        return await self._execute_with_failure_detection(callback)
+
+    async def _execute_with_failure_detection(
+        self, callback: Callable, cmds: tuple = ()
+    ):
+        """
+        Execute a commands execution callback with failure detection.
+        """
+
+        async def wrapper():
+            # On each retry we need to check active database as it might change.
+            await self._check_active_database()
+            return await callback()
+
+        return await self._command_retry.call_with_retry(
+            lambda: wrapper(),
+            lambda error: self._on_command_fail(error, *cmds),
+        )
+
+    async def _check_active_database(self):
+        """
+        Checks if active a database needs to be updated.
+        """
+        if (
+            self._active_database is None
+            or self._active_database.circuit.state != CBState.CLOSED
+            or (
+                self._auto_fallback_interval != DEFAULT_AUTO_FALLBACK_INTERVAL
+                and self._next_fallback_attempt <= datetime.now()
+            )
+        ):
+            await self.set_active_database(
+                await self._failover_strategy_executor.execute()
+            )
+            self._schedule_next_fallback()
+
+    async def _on_command_fail(self, error, *args):
+        await self._event_dispatcher.dispatch_async(
+            AsyncOnCommandsFailEvent(args, error)
+        )
+
+    async def _register_command_execution(self, cmd: tuple):
+        for detector in self._failure_detectors:
+            await detector.register_command_execution(cmd)
+
+    def _setup_event_dispatcher(self):
+        """
+        Registers necessary listeners.
+        """
+        failure_listener = RegisterCommandFailure(self._failure_detectors)
+        resubscribe_listener = ResubscribeOnActiveDatabaseChanged()
+        close_connection_listener = CloseConnectionOnActiveDatabaseChanged()
+        self._event_dispatcher.register_listeners(
+            {
+                AsyncOnCommandsFailEvent: [failure_listener],
+                AsyncActiveDatabaseChanged: [
+                    close_connection_listener,
+                    resubscribe_listener,
+                ],
+            }
+        )

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/config.py

@@ -0,0 +1,210 @@
+from dataclasses import dataclass, field
+from typing import List, Optional, Type, Union
+
+import pybreaker
+
+from redis.asyncio import ConnectionPool, Redis, RedisCluster
+from redis.asyncio.multidb.database import Database, Databases
+from redis.asyncio.multidb.failover import (
+    DEFAULT_FAILOVER_ATTEMPTS,
+    DEFAULT_FAILOVER_DELAY,
+    AsyncFailoverStrategy,
+    WeightBasedFailoverStrategy,
+)
+from redis.asyncio.multidb.failure_detector import (
+    AsyncFailureDetector,
+    FailureDetectorAsyncWrapper,
+)
+from redis.asyncio.multidb.healthcheck import (
+    DEFAULT_HEALTH_CHECK_DELAY,
+    DEFAULT_HEALTH_CHECK_INTERVAL,
+    DEFAULT_HEALTH_CHECK_POLICY,
+    DEFAULT_HEALTH_CHECK_PROBES,
+    HealthCheck,
+    HealthCheckPolicies,
+    PingHealthCheck,
+)
+from redis.asyncio.retry import Retry
+from redis.backoff import ExponentialWithJitterBackoff, NoBackoff
+from redis.data_structure import WeightedList
+from redis.event import EventDispatcher, EventDispatcherInterface
+from redis.multidb.circuit import (
+    DEFAULT_GRACE_PERIOD,
+    CircuitBreaker,
+    PBCircuitBreakerAdapter,
+)
+from redis.multidb.failure_detector import (
+    DEFAULT_FAILURE_RATE_THRESHOLD,
+    DEFAULT_FAILURES_DETECTION_WINDOW,
+    DEFAULT_MIN_NUM_FAILURES,
+    CommandFailureDetector,
+)
+
+DEFAULT_AUTO_FALLBACK_INTERVAL = 120
+
+
+def default_event_dispatcher() -> EventDispatcherInterface:
+    return EventDispatcher()
+
+
+@dataclass
+class DatabaseConfig:
+    """
+    Dataclass representing the configuration for a database connection.
+
+    This class is used to store configuration settings for a database connection,
+    including client options, connection sourcing details, circuit breaker settings,
+    and cluster-specific properties. It provides a structure for defining these
+    attributes and allows for the creation of customized configurations for various
+    database setups.
+
+    Attributes:
+        weight (float): Weight of the database to define the active one.
+        client_kwargs (dict): Additional parameters for the database client connection.
+        from_url (Optional[str]): Redis URL way of connecting to the database.
+        from_pool (Optional[ConnectionPool]): A pre-configured connection pool to use.
+        circuit (Optional[CircuitBreaker]): Custom circuit breaker implementation.
+        grace_period (float): Grace period after which we need to check if the circuit could be closed again.
+        health_check_url (Optional[str]): URL for health checks. Cluster FQDN is typically used
+            on public Redis Enterprise endpoints.
+
+    Methods:
+        default_circuit_breaker:
+            Generates and returns a default CircuitBreaker instance adapted for use.
+    """
+
+    weight: float = 1.0
+    client_kwargs: dict = field(default_factory=dict)
+    from_url: Optional[str] = None
+    from_pool: Optional[ConnectionPool] = None
+    circuit: Optional[CircuitBreaker] = None
+    grace_period: float = DEFAULT_GRACE_PERIOD
+    health_check_url: Optional[str] = None
+
+    def default_circuit_breaker(self) -> CircuitBreaker:
+        circuit_breaker = pybreaker.CircuitBreaker(reset_timeout=self.grace_period)
+        return PBCircuitBreakerAdapter(circuit_breaker)
+
+
+@dataclass
+class MultiDbConfig:
+    """
+    Configuration class for managing multiple database connections in a resilient and fail-safe manner.
+
+    Attributes:
+        databases_config: A list of database configurations.
+        client_class: The client class used to manage database connections.
+        command_retry: Retry strategy for executing database commands.
+        failure_detectors: Optional list of additional failure detectors for monitoring database failures.
+        min_num_failures: Minimal count of failures required for failover
+        failure_rate_threshold: Percentage of failures required for failover
+        failures_detection_window: Time interval for tracking database failures.
+        health_checks: Optional list of additional health checks performed on databases.
+        health_check_interval: Time interval for executing health checks.
+        health_check_probes: Number of attempts to evaluate the health of a database.
+        health_check_delay: Delay between health check attempts.
+        failover_strategy: Optional strategy for handling database failover scenarios.
+        failover_attempts: Number of retries allowed for failover operations.
+        failover_delay: Delay between failover attempts.
+        auto_fallback_interval: Time interval to trigger automatic fallback.
+        event_dispatcher: Interface for dispatching events related to database operations.
+
+    Methods:
+        databases:
+            Retrieves a collection of database clients managed by weighted configurations.
+            Initializes database clients based on the provided configuration and removes
+            redundant retry objects for lower-level clients to rely on global retry logic.
+
+        default_failure_detectors:
+            Returns the default list of failure detectors used to monitor database failures.
+
+        default_health_checks:
+            Returns the default list of health checks used to monitor database health
+            with specific retry and backoff strategies.
+
+        default_failover_strategy:
+            Provides the default failover strategy used for handling failover scenarios
+            with defined retry and backoff configurations.
+    """
+
+    databases_config: List[DatabaseConfig]
+    client_class: Type[Union[Redis, RedisCluster]] = Redis
+    command_retry: Retry = Retry(
+        backoff=ExponentialWithJitterBackoff(base=1, cap=10), retries=3
+    )
+    failure_detectors: Optional[List[AsyncFailureDetector]] = None
+    min_num_failures: int = DEFAULT_MIN_NUM_FAILURES
+    failure_rate_threshold: float = DEFAULT_FAILURE_RATE_THRESHOLD
+    failures_detection_window: float = DEFAULT_FAILURES_DETECTION_WINDOW
+    health_checks: Optional[List[HealthCheck]] = None
+    health_check_interval: float = DEFAULT_HEALTH_CHECK_INTERVAL
+    health_check_probes: int = DEFAULT_HEALTH_CHECK_PROBES
+    health_check_delay: float = DEFAULT_HEALTH_CHECK_DELAY
+    health_check_policy: HealthCheckPolicies = DEFAULT_HEALTH_CHECK_POLICY
+    failover_strategy: Optional[AsyncFailoverStrategy] = None
+    failover_attempts: int = DEFAULT_FAILOVER_ATTEMPTS
+    failover_delay: float = DEFAULT_FAILOVER_DELAY
+    auto_fallback_interval: float = DEFAULT_AUTO_FALLBACK_INTERVAL
+    event_dispatcher: EventDispatcherInterface = field(
+        default_factory=default_event_dispatcher
+    )
+
+    def databases(self) -> Databases:
+        databases = WeightedList()
+
+        for database_config in self.databases_config:
+            # The retry object is not used in the lower level clients, so we can safely remove it.
+            # We rely on command_retry in terms of global retries.
+            database_config.client_kwargs.update(
+                {"retry": Retry(retries=0, backoff=NoBackoff())}
+            )
+
+            if database_config.from_url:
+                client = self.client_class.from_url(
+                    database_config.from_url, **database_config.client_kwargs
+                )
+            elif database_config.from_pool:
+                database_config.from_pool.set_retry(
+                    Retry(retries=0, backoff=NoBackoff())
+                )
+                client = self.client_class.from_pool(
+                    connection_pool=database_config.from_pool
+                )
+            else:
+                client = self.client_class(**database_config.client_kwargs)
+
+            circuit = (
+                database_config.default_circuit_breaker()
+                if database_config.circuit is None
+                else database_config.circuit
+            )
+            databases.add(
+                Database(
+                    client=client,
+                    circuit=circuit,
+                    weight=database_config.weight,
+                    health_check_url=database_config.health_check_url,
+                ),
+                database_config.weight,
+            )
+
+        return databases
+
+    def default_failure_detectors(self) -> List[AsyncFailureDetector]:
+        return [
+            FailureDetectorAsyncWrapper(
+                CommandFailureDetector(
+                    min_num_failures=self.min_num_failures,
+                    failure_rate_threshold=self.failure_rate_threshold,
+                    failure_detection_window=self.failures_detection_window,
+                )
+            ),
+        ]
+
+    def default_health_checks(self) -> List[HealthCheck]:
+        return [
+            PingHealthCheck(),
+        ]
+
+    def default_failover_strategy(self) -> AsyncFailoverStrategy:
+        return WeightBasedFailoverStrategy()

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/database.py

@@ -0,0 +1,69 @@
+from abc import abstractmethod
+from typing import Optional, Union
+
+from redis.asyncio import Redis, RedisCluster
+from redis.data_structure import WeightedList
+from redis.multidb.circuit import CircuitBreaker
+from redis.multidb.database import AbstractDatabase, BaseDatabase
+from redis.typing import Number
+
+
+class AsyncDatabase(AbstractDatabase):
+    """Database with an underlying asynchronous redis client."""
+
+    @property
+    @abstractmethod
+    def client(self) -> Union[Redis, RedisCluster]:
+        """The underlying redis client."""
+        pass
+
+    @client.setter
+    @abstractmethod
+    def client(self, client: Union[Redis, RedisCluster]):
+        """Set the underlying redis client."""
+        pass
+
+    @property
+    @abstractmethod
+    def circuit(self) -> CircuitBreaker:
+        """Circuit breaker for the current database."""
+        pass
+
+    @circuit.setter
+    @abstractmethod
+    def circuit(self, circuit: CircuitBreaker):
+        """Set the circuit breaker for the current database."""
+        pass
+
+
+Databases = WeightedList[tuple[AsyncDatabase, Number]]
+
+
+class Database(BaseDatabase, AsyncDatabase):
+    def __init__(
+        self,
+        client: Union[Redis, RedisCluster],
+        circuit: CircuitBreaker,
+        weight: float,
+        health_check_url: Optional[str] = None,
+    ):
+        self._client = client
+        self._cb = circuit
+        self._cb.database = self
+        super().__init__(weight, health_check_url)
+
+    @property
+    def client(self) -> Union[Redis, RedisCluster]:
+        return self._client
+
+    @client.setter
+    def client(self, client: Union[Redis, RedisCluster]):
+        self._client = client
+
+    @property
+    def circuit(self) -> CircuitBreaker:
+        return self._cb
+
+    @circuit.setter
+    def circuit(self, circuit: CircuitBreaker):
+        self._cb = circuit

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/event.py

@@ -0,0 +1,84 @@
+from typing import List
+
+from redis.asyncio import Redis
+from redis.asyncio.multidb.database import AsyncDatabase
+from redis.asyncio.multidb.failure_detector import AsyncFailureDetector
+from redis.event import AsyncEventListenerInterface, AsyncOnCommandsFailEvent
+
+
+class AsyncActiveDatabaseChanged:
+    """
+    Event fired when an async active database has been changed.
+    """
+
+    def __init__(
+        self,
+        old_database: AsyncDatabase,
+        new_database: AsyncDatabase,
+        command_executor,
+        **kwargs,
+    ):
+        self._old_database = old_database
+        self._new_database = new_database
+        self._command_executor = command_executor
+        self._kwargs = kwargs
+
+    @property
+    def old_database(self) -> AsyncDatabase:
+        return self._old_database
+
+    @property
+    def new_database(self) -> AsyncDatabase:
+        return self._new_database
+
+    @property
+    def command_executor(self):
+        return self._command_executor
+
+    @property
+    def kwargs(self):
+        return self._kwargs
+
+
+class ResubscribeOnActiveDatabaseChanged(AsyncEventListenerInterface):
+    """
+    Re-subscribe the currently active pub / sub to a new active database.
+    """
+
+    async def listen(self, event: AsyncActiveDatabaseChanged):
+        old_pubsub = event.command_executor.active_pubsub
+
+        if old_pubsub is not None:
+            # Re-assign old channels and patterns so they will be automatically subscribed on connection.
+            new_pubsub = event.new_database.client.pubsub(**event.kwargs)
+            new_pubsub.channels = old_pubsub.channels
+            new_pubsub.patterns = old_pubsub.patterns
+            await new_pubsub.on_connect(None)
+            event.command_executor.active_pubsub = new_pubsub
+            await old_pubsub.aclose()
+
+
+class CloseConnectionOnActiveDatabaseChanged(AsyncEventListenerInterface):
+    """
+    Close connection to the old active database.
+    """
+
+    async def listen(self, event: AsyncActiveDatabaseChanged):
+        await event.old_database.client.aclose()
+
+        if isinstance(event.old_database.client, Redis):
+            await event.old_database.client.connection_pool.update_active_connections_for_reconnect()
+            await event.old_database.client.connection_pool.disconnect()
+
+
+class RegisterCommandFailure(AsyncEventListenerInterface):
+    """
+    Event listener that registers command failures and passing it to the failure detectors.
+    """
+
+    def __init__(self, failure_detectors: List[AsyncFailureDetector]):
+        self._failure_detectors = failure_detectors
+
+    async def listen(self, event: AsyncOnCommandsFailEvent) -> None:
+        for failure_detector in self._failure_detectors:
+            await failure_detector.register_failure(event.exception, event.commands)

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/failover.py

@@ -0,0 +1,125 @@
+import time
+from abc import ABC, abstractmethod
+
+from redis.asyncio.multidb.database import AsyncDatabase, Databases
+from redis.data_structure import WeightedList
+from redis.multidb.circuit import State as CBState
+from redis.multidb.exception import (
+    NoValidDatabaseException,
+    TemporaryUnavailableException,
+)
+
+DEFAULT_FAILOVER_ATTEMPTS = 10
+DEFAULT_FAILOVER_DELAY = 12
+
+
+class AsyncFailoverStrategy(ABC):
+    @abstractmethod
+    async def database(self) -> AsyncDatabase:
+        """Select the database according to the strategy."""
+        pass
+
+    @abstractmethod
+    def set_databases(self, databases: Databases) -> None:
+        """Set the database strategy operates on."""
+        pass
+
+
+class FailoverStrategyExecutor(ABC):
+    @property
+    @abstractmethod
+    def failover_attempts(self) -> int:
+        """The number of failover attempts."""
+        pass
+
+    @property
+    @abstractmethod
+    def failover_delay(self) -> float:
+        """The delay between failover attempts."""
+        pass
+
+    @property
+    @abstractmethod
+    def strategy(self) -> AsyncFailoverStrategy:
+        """The strategy to execute."""
+        pass
+
+    @abstractmethod
+    async def execute(self) -> AsyncDatabase:
+        """Execute the failover strategy."""
+        pass
+
+
+class WeightBasedFailoverStrategy(AsyncFailoverStrategy):
+    """
+    Failover strategy based on database weights.
+    """
+
+    def __init__(self):
+        self._databases = WeightedList()
+
+    async def database(self) -> AsyncDatabase:
+        for database, _ in self._databases:
+            if database.circuit.state == CBState.CLOSED:
+                return database
+
+        raise NoValidDatabaseException("No valid database available for communication")
+
+    def set_databases(self, databases: Databases) -> None:
+        self._databases = databases
+
+
+class DefaultFailoverStrategyExecutor(FailoverStrategyExecutor):
+    """
+    Executes given failover strategy.
+    """
+
+    def __init__(
+        self,
+        strategy: AsyncFailoverStrategy,
+        failover_attempts: int = DEFAULT_FAILOVER_ATTEMPTS,
+        failover_delay: float = DEFAULT_FAILOVER_DELAY,
+    ):
+        self._strategy = strategy
+        self._failover_attempts = failover_attempts
+        self._failover_delay = failover_delay
+        self._next_attempt_ts: int = 0
+        self._failover_counter: int = 0
+
+    @property
+    def failover_attempts(self) -> int:
+        return self._failover_attempts
+
+    @property
+    def failover_delay(self) -> float:
+        return self._failover_delay
+
+    @property
+    def strategy(self) -> AsyncFailoverStrategy:
+        return self._strategy
+
+    async def execute(self) -> AsyncDatabase:
+        try:
+            database = await self._strategy.database()
+            self._reset()
+            return database
+        except NoValidDatabaseException as e:
+            if self._next_attempt_ts == 0:
+                self._next_attempt_ts = time.time() + self._failover_delay
+                self._failover_counter += 1
+            elif time.time() >= self._next_attempt_ts:
+                self._next_attempt_ts += self._failover_delay
+                self._failover_counter += 1
+
+            if self._failover_counter > self._failover_attempts:
+                self._reset()
+                raise e
+            else:
+                raise TemporaryUnavailableException(
+                    "No database connections currently available. "
+                    "This is a temporary condition - please retry the operation."
+                )
+
+    def _reset(self) -> None:
+        self._next_attempt_ts = 0
+        self._failover_counter = 0

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/failure_detector.py

@@ -0,0 +1,38 @@
+from abc import ABC, abstractmethod
+
+from redis.multidb.failure_detector import FailureDetector
+
+
+class AsyncFailureDetector(ABC):
+    @abstractmethod
+    async def register_failure(self, exception: Exception, cmd: tuple) -> None:
+        """Register a failure that occurred during command execution."""
+        pass
+
+    @abstractmethod
+    async def register_command_execution(self, cmd: tuple) -> None:
+        """Register a command execution."""
+        pass
+
+    @abstractmethod
+    def set_command_executor(self, command_executor) -> None:
+        """Set the command executor for this failure."""
+        pass
+
+
+class FailureDetectorAsyncWrapper(AsyncFailureDetector):
+    """
+    Async wrapper for the failure detector.
+    """
+
+    def __init__(self, failure_detector: FailureDetector) -> None:
+        self._failure_detector = failure_detector
+
+    async def register_failure(self, exception: Exception, cmd: tuple) -> None:
+        self._failure_detector.register_failure(exception, cmd)
+
+    async def register_command_execution(self, cmd: tuple) -> None:
+        self._failure_detector.register_command_execution(cmd)
+
+    def set_command_executor(self, command_executor) -> None:
+        self._failure_detector.set_command_executor(command_executor)

backend/.venv/lib/python3.12/site-packages/redis/asyncio/multidb/healthcheck.py

@@ -0,0 +1,285 @@
+import asyncio
+import logging
+from abc import ABC, abstractmethod
+from enum import Enum
+from typing import List, Optional, Tuple, Union
+
+from redis.asyncio import Redis
+from redis.asyncio.http.http_client import DEFAULT_TIMEOUT, AsyncHTTPClientWrapper
+from redis.backoff import NoBackoff
+from redis.http.http_client import HttpClient
+from redis.multidb.exception import UnhealthyDatabaseException
+from redis.retry import Retry
+
+DEFAULT_HEALTH_CHECK_PROBES = 3
+DEFAULT_HEALTH_CHECK_INTERVAL = 5
+DEFAULT_HEALTH_CHECK_DELAY = 0.5
+DEFAULT_LAG_AWARE_TOLERANCE = 5000
+
+logger = logging.getLogger(__name__)
+
+
+class HealthCheck(ABC):
+    @abstractmethod
+    async def check_health(self, database) -> bool:
+        """Function to determine the health status."""
+        pass
+
+
+class HealthCheckPolicy(ABC):
+    """
+    Health checks execution policy.
+    """
+
+    @property
+    @abstractmethod
+    def health_check_probes(self) -> int:
+        """Number of probes to execute health checks."""
+        pass
+
+    @property
+    @abstractmethod
+    def health_check_delay(self) -> float:
+        """Delay between health check probes."""
+        pass
+
+    @abstractmethod
+    async def execute(self, health_checks: List[HealthCheck], database) -> bool:
+        """Execute health checks and return database health status."""
+        pass
+
+
+class AbstractHealthCheckPolicy(HealthCheckPolicy):
+    def __init__(self, health_check_probes: int, health_check_delay: float):
+        if health_check_probes < 1:
+            raise ValueError("health_check_probes must be greater than 0")
+        self._health_check_probes = health_check_probes
+        self._health_check_delay = health_check_delay
+
+    @property
+    def health_check_probes(self) -> int:
+        return self._health_check_probes
+
+    @property
+    def health_check_delay(self) -> float:
+        return self._health_check_delay
+
+    @abstractmethod
+    async def execute(self, health_checks: List[HealthCheck], database) -> bool:
+        pass
+
+
+class HealthyAllPolicy(AbstractHealthCheckPolicy):
+    """
+    Policy that returns True if all health check probes are successful.
+    """
+
+    def __init__(self, health_check_probes: int, health_check_delay: float):
+        super().__init__(health_check_probes, health_check_delay)
+
+    async def execute(self, health_checks: List[HealthCheck], database) -> bool:
+        for health_check in health_checks:
+            for attempt in range(self.health_check_probes):
+                try:
+                    if not await health_check.check_health(database):
+                        return False
+                except Exception as e:
+                    raise UnhealthyDatabaseException("Unhealthy database", database, e)
+
+                if attempt < self.health_check_probes - 1:
+                    await asyncio.sleep(self._health_check_delay)
+        return True
+
+
+class HealthyMajorityPolicy(AbstractHealthCheckPolicy):
+    """
+    Policy that returns True if a majority of health check probes are successful.
+    """
+
+    def __init__(self, health_check_probes: int, health_check_delay: float):
+        super().__init__(health_check_probes, health_check_delay)
+
+    async def execute(self, health_checks: List[HealthCheck], database) -> bool:
+        for health_check in health_checks:
+            if self.health_check_probes % 2 == 0:
+                allowed_unsuccessful_probes = self.health_check_probes / 2
+            else:
+                allowed_unsuccessful_probes = (self.health_check_probes + 1) / 2
+
+            for attempt in range(self.health_check_probes):
+                try:
+                    if not await health_check.check_health(database):
+                        allowed_unsuccessful_probes -= 1
+                        if allowed_unsuccessful_probes <= 0:
+                            return False
+                except Exception as e:
+                    allowed_unsuccessful_probes -= 1
+                    if allowed_unsuccessful_probes <= 0:
+                        raise UnhealthyDatabaseException(
+                            "Unhealthy database", database, e
+                        )
+
+                if attempt < self.health_check_probes - 1:
+                    await asyncio.sleep(self._health_check_delay)
+        return True
+
+
+class HealthyAnyPolicy(AbstractHealthCheckPolicy):
+    """
+    Policy that returns True if at least one health check probe is successful.
+    """
+
+    def __init__(self, health_check_probes: int, health_check_delay: float):
+        super().__init__(health_check_probes, health_check_delay)
+
+    async def execute(self, health_checks: List[HealthCheck], database) -> bool:
+        is_healthy = False
+
+        for health_check in health_checks:
+            exception = None
+
+            for attempt in range(self.health_check_probes):
+                try:
+                    if await health_check.check_health(database):
+                        is_healthy = True
+                        break
+                    else:
+                        is_healthy = False
+                except Exception as e:
+                    exception = UnhealthyDatabaseException(
+                        "Unhealthy database", database, e
+                    )
+
+                if attempt < self.health_check_probes - 1:
+                    await asyncio.sleep(self._health_check_delay)
+
+            if not is_healthy and not exception:
+                return is_healthy
+            elif not is_healthy and exception:
+                raise exception
+
+        return is_healthy
+
+
+class HealthCheckPolicies(Enum):
+    HEALTHY_ALL = HealthyAllPolicy
+    HEALTHY_MAJORITY = HealthyMajorityPolicy
+    HEALTHY_ANY = HealthyAnyPolicy
+
+
+DEFAULT_HEALTH_CHECK_POLICY: HealthCheckPolicies = HealthCheckPolicies.HEALTHY_ALL
+
+
+class PingHealthCheck(HealthCheck):
+    """
+    Health check based on PING command.
+    """
+
+    async def check_health(self, database) -> bool:
+        if isinstance(database.client, Redis):
+            return await database.client.execute_command("PING")
+        else:
+            # For a cluster checks if all nodes are healthy.
+            all_nodes = database.client.get_nodes()
+            for node in all_nodes:
+                if not await node.redis_connection.execute_command("PING"):
+                    return False
+
+            return True
+
+
+class LagAwareHealthCheck(HealthCheck):
+    """
+    Health check available for Redis Enterprise deployments.
+    Verify via REST API that the database is healthy based on different lags.
+    """
+
+    def __init__(
+        self,
+        rest_api_port: int = 9443,
+        lag_aware_tolerance: int = DEFAULT_LAG_AWARE_TOLERANCE,
+        timeout: float = DEFAULT_TIMEOUT,
+        auth_basic: Optional[Tuple[str, str]] = None,
+        verify_tls: bool = True,
+        # TLS verification (server) options
+        ca_file: Optional[str] = None,
+        ca_path: Optional[str] = None,
+        ca_data: Optional[Union[str, bytes]] = None,
+        # Mutual TLS (client cert) options
+        client_cert_file: Optional[str] = None,
+        client_key_file: Optional[str] = None,
+        client_key_password: Optional[str] = None,
+    ):
+        """
+        Initialize LagAwareHealthCheck with the specified parameters.
+
+        Args:
+            rest_api_port: Port number for Redis Enterprise REST API (default: 9443)
+            lag_aware_tolerance: Tolerance in lag between databases in MS (default: 100)
+            timeout: Request timeout in seconds (default: DEFAULT_TIMEOUT)
+            auth_basic: Tuple of (username, password) for basic authentication
+            verify_tls: Whether to verify TLS certificates (default: True)
+            ca_file: Path to CA certificate file for TLS verification
+            ca_path: Path to CA certificates directory for TLS verification
+            ca_data: CA certificate data as string or bytes
+            client_cert_file: Path to client certificate file for mutual TLS
+            client_key_file: Path to client private key file for mutual TLS
+            client_key_password: Password for encrypted client private key
+        """
+        self._http_client = AsyncHTTPClientWrapper(
+            HttpClient(
+                timeout=timeout,
+                auth_basic=auth_basic,
+                retry=Retry(NoBackoff(), retries=0),
+                verify_tls=verify_tls,
+                ca_file=ca_file,
+                ca_path=ca_path,
+                ca_data=ca_data,
+                client_cert_file=client_cert_file,
+                client_key_file=client_key_file,
+                client_key_password=client_key_password,
+            )
+        )
+        self._rest_api_port = rest_api_port
+        self._lag_aware_tolerance = lag_aware_tolerance
+
+    async def check_health(self, database) -> bool:
+        if database.health_check_url is None:
+            raise ValueError(
+                "Database health check url is not set. Please check DatabaseConfig for the current database."
+            )
+
+        if isinstance(database.client, Redis):
+            db_host = database.client.get_connection_kwargs()["host"]
+        else:
+            db_host = database.client.startup_nodes[0].host
+
+        base_url = f"{database.health_check_url}:{self._rest_api_port}"
+        self._http_client.client.base_url = base_url
+
+        # Find bdb matching to the current database host
+        matching_bdb = None
+        for bdb in await self._http_client.get("/v1/bdbs"):
+            for endpoint in bdb["endpoints"]:
+                if endpoint["dns_name"] == db_host:
+                    matching_bdb = bdb
+                    break
+
+                # In case if the host was set as public IP
+                for addr in endpoint["addr"]:
+                    if addr == db_host:
+                        matching_bdb = bdb
+                        break
+
+        if matching_bdb is None:
+            logger.warning("LagAwareHealthCheck failed: Couldn't find a matching bdb")
+            raise ValueError("Could not find a matching bdb")
+
+        url = (
+            f"/v1/bdbs/{matching_bdb['uid']}/availability"
+            f"?extend_check=lag&availability_lag_tolerance_ms={self._lag_aware_tolerance}"
+        )
+        await self._http_client.get(url, expect_json=False)
+
+        # Status checked in an http client, otherwise HttpError will be raised
+        return True

backend/.venv/lib/python3.12/site-packages/redis/asyncio/retry.py

@@ -0,0 +1,58 @@
+from asyncio import sleep
+from typing import TYPE_CHECKING, Any, Awaitable, Callable, Tuple, Type, TypeVar
+
+from redis.exceptions import ConnectionError, RedisError, TimeoutError
+from redis.retry import AbstractRetry
+
+T = TypeVar("T")
+
+if TYPE_CHECKING:
+    from redis.backoff import AbstractBackoff
+
+
+class Retry(AbstractRetry[RedisError]):
+    __hash__ = AbstractRetry.__hash__
+
+    def __init__(
+        self,
+        backoff: "AbstractBackoff",
+        retries: int,
+        supported_errors: Tuple[Type[RedisError], ...] = (
+            ConnectionError,
+            TimeoutError,
+        ),
+    ):
+        super().__init__(backoff, retries, supported_errors)
+
+    def __eq__(self, other: Any) -> bool:
+        if not isinstance(other, Retry):
+            return NotImplemented
+
+        return (
+            self._backoff == other._backoff
+            and self._retries == other._retries
+            and set(self._supported_errors) == set(other._supported_errors)
+        )
+
+    async def call_with_retry(
+        self, do: Callable[[], Awaitable[T]], fail: Callable[[RedisError], Any]
+    ) -> T:
+        """
+        Execute an operation that might fail and returns its result, or
+        raise the exception that was thrown depending on the `Backoff` object.
+        `do`: the operation to call. Expects no argument.
+        `fail`: the failure handler, expects the last error that was thrown
+        """
+        self._backoff.reset()
+        failures = 0
+        while True:
+            try:
+                return await do()
+            except self._supported_errors as error:
+                failures += 1
+                await fail(error)
+                if self._retries >= 0 and failures > self._retries:
+                    raise error
+                backoff = self._backoff.compute(failures)
+                if backoff > 0:
+                    await sleep(backoff)

backend/.venv/lib/python3.12/site-packages/redis/asyncio/sentinel.py

@@ -0,0 +1,404 @@
+import asyncio
+import random
+import weakref
+from typing import AsyncIterator, Iterable, Mapping, Optional, Sequence, Tuple, Type
+
+from redis.asyncio.client import Redis
+from redis.asyncio.connection import (
+    Connection,
+    ConnectionPool,
+    EncodableT,
+    SSLConnection,
+)
+from redis.commands import AsyncSentinelCommands
+from redis.exceptions import (
+    ConnectionError,
+    ReadOnlyError,
+    ResponseError,
+    TimeoutError,
+)
+
+
+class MasterNotFoundError(ConnectionError):
+    pass
+
+
+class SlaveNotFoundError(ConnectionError):
+    pass
+
+
+class SentinelManagedConnection(Connection):
+    def __init__(self, **kwargs):
+        self.connection_pool = kwargs.pop("connection_pool")
+        super().__init__(**kwargs)
+
+    def __repr__(self):
+        s = f"<{self.__class__.__module__}.{self.__class__.__name__}"
+        if self.host:
+            host_info = f",host={self.host},port={self.port}"
+            s += host_info
+        return s + ")>"
+
+    async def connect_to(self, address):
+        self.host, self.port = address
+        await self.connect_check_health(
+            check_health=self.connection_pool.check_connection,
+            retry_socket_connect=False,
+        )
+
+    async def _connect_retry(self):
+        if self._reader:
+            return  # already connected
+        if self.connection_pool.is_master:
+            await self.connect_to(await self.connection_pool.get_master_address())
+        else:
+            async for slave in self.connection_pool.rotate_slaves():
+                try:
+                    return await self.connect_to(slave)
+                except ConnectionError:
+                    continue
+            raise SlaveNotFoundError  # Never be here
+
+    async def connect(self):
+        return await self.retry.call_with_retry(
+            self._connect_retry,
+            lambda error: asyncio.sleep(0),
+        )
+
+    async def read_response(
+        self,
+        disable_decoding: bool = False,
+        timeout: Optional[float] = None,
+        *,
+        disconnect_on_error: Optional[float] = True,
+        push_request: Optional[bool] = False,
+    ):
+        try:
+            return await super().read_response(
+                disable_decoding=disable_decoding,
+                timeout=timeout,
+                disconnect_on_error=disconnect_on_error,
+                push_request=push_request,
+            )
+        except ReadOnlyError:
+            if self.connection_pool.is_master:
+                # When talking to a master, a ReadOnlyError when likely
+                # indicates that the previous master that we're still connected
+                # to has been demoted to a slave and there's a new master.
+                # calling disconnect will force the connection to re-query
+                # sentinel during the next connect() attempt.
+                await self.disconnect()
+                raise ConnectionError("The previous master is now a slave")
+            raise
+
+
+class SentinelManagedSSLConnection(SentinelManagedConnection, SSLConnection):
+    pass
+
+
+class SentinelConnectionPool(ConnectionPool):
+    """
+    Sentinel backed connection pool.
+
+    If ``check_connection`` flag is set to True, SentinelManagedConnection
+    sends a PING command right after establishing the connection.
+    """
+
+    def __init__(self, service_name, sentinel_manager, **kwargs):
+        kwargs["connection_class"] = kwargs.get(
+            "connection_class",
+            (
+                SentinelManagedSSLConnection
+                if kwargs.pop("ssl", False)
+                else SentinelManagedConnection
+            ),
+        )
+        self.is_master = kwargs.pop("is_master", True)
+        self.check_connection = kwargs.pop("check_connection", False)
+        super().__init__(**kwargs)
+        self.connection_kwargs["connection_pool"] = weakref.proxy(self)
+        self.service_name = service_name
+        self.sentinel_manager = sentinel_manager
+        self.master_address = None
+        self.slave_rr_counter = None
+
+    def __repr__(self):
+        return (
+            f"<{self.__class__.__module__}.{self.__class__.__name__}"
+            f"(service={self.service_name}({self.is_master and 'master' or 'slave'}))>"
+        )
+
+    def reset(self):
+        super().reset()
+        self.master_address = None
+        self.slave_rr_counter = None
+
+    def owns_connection(self, connection: Connection):
+        check = not self.is_master or (
+            self.is_master and self.master_address == (connection.host, connection.port)
+        )
+        return check and super().owns_connection(connection)
+
+    async def get_master_address(self):
+        master_address = await self.sentinel_manager.discover_master(self.service_name)
+        if self.is_master:
+            if self.master_address != master_address:
+                self.master_address = master_address
+                # disconnect any idle connections so that they reconnect
+                # to the new master the next time that they are used.
+                await self.disconnect(inuse_connections=False)
+        return master_address
+
+    async def rotate_slaves(self) -> AsyncIterator:
+        """Round-robin slave balancer"""
+        slaves = await self.sentinel_manager.discover_slaves(self.service_name)
+        if slaves:
+            if self.slave_rr_counter is None:
+                self.slave_rr_counter = random.randint(0, len(slaves) - 1)
+            for _ in range(len(slaves)):
+                self.slave_rr_counter = (self.slave_rr_counter + 1) % len(slaves)
+                slave = slaves[self.slave_rr_counter]
+                yield slave
+        # Fallback to the master connection
+        try:
+            yield await self.get_master_address()
+        except MasterNotFoundError:
+            pass
+        raise SlaveNotFoundError(f"No slave found for {self.service_name!r}")
+
+
+class Sentinel(AsyncSentinelCommands):
+    """
+    Redis Sentinel cluster client
+
+    >>> from redis.sentinel import Sentinel
+    >>> sentinel = Sentinel([('localhost', 26379)], socket_timeout=0.1)
+    >>> master = sentinel.master_for('mymaster', socket_timeout=0.1)
+    >>> await master.set('foo', 'bar')
+    >>> slave = sentinel.slave_for('mymaster', socket_timeout=0.1)
+    >>> await slave.get('foo')
+    b'bar'
+
+    ``sentinels`` is a list of sentinel nodes. Each node is represented by
+    a pair (hostname, port).
+
+    ``min_other_sentinels`` defined a minimum number of peers for a sentinel.
+    When querying a sentinel, if it doesn't meet this threshold, responses
+    from that sentinel won't be considered valid.
+
+    ``sentinel_kwargs`` is a dictionary of connection arguments used when
+    connecting to sentinel instances. Any argument that can be passed to
+    a normal Redis connection can be specified here. If ``sentinel_kwargs`` is
+    not specified, any socket_timeout and socket_keepalive options specified
+    in ``connection_kwargs`` will be used.
+
+    ``connection_kwargs`` are keyword arguments that will be used when
+    establishing a connection to a Redis server.
+    """
+
+    def __init__(
+        self,
+        sentinels,
+        min_other_sentinels=0,
+        sentinel_kwargs=None,
+        force_master_ip=None,
+        **connection_kwargs,
+    ):
+        # if sentinel_kwargs isn't defined, use the socket_* options from
+        # connection_kwargs
+        if sentinel_kwargs is None:
+            sentinel_kwargs = {
+                k: v for k, v in connection_kwargs.items() if k.startswith("socket_")
+            }
+        self.sentinel_kwargs = sentinel_kwargs
+
+        self.sentinels = [
+            Redis(host=hostname, port=port, **self.sentinel_kwargs)
+            for hostname, port in sentinels
+        ]
+        self.min_other_sentinels = min_other_sentinels
+        self.connection_kwargs = connection_kwargs
+        self._force_master_ip = force_master_ip
+
+    async def execute_command(self, *args, **kwargs):
+        """
+        Execute Sentinel command in sentinel nodes.
+        once - If set to True, then execute the resulting command on a single
+               node at random, rather than across the entire sentinel cluster.
+        """
+        once = bool(kwargs.pop("once", False))
+
+        # Check if command is supposed to return the original
+        # responses instead of boolean value.
+        return_responses = bool(kwargs.pop("return_responses", False))
+
+        if once:
+            response = await random.choice(self.sentinels).execute_command(
+                *args, **kwargs
+            )
+            if return_responses:
+                return [response]
+            else:
+                return True if response else False
+
+        tasks = [
+            asyncio.Task(sentinel.execute_command(*args, **kwargs))
+            for sentinel in self.sentinels
+        ]
+        responses = await asyncio.gather(*tasks)
+
+        if return_responses:
+            return responses
+
+        return all(responses)
+
+    def __repr__(self):
+        sentinel_addresses = []
+        for sentinel in self.sentinels:
+            sentinel_addresses.append(
+                f"{sentinel.connection_pool.connection_kwargs['host']}:"
+                f"{sentinel.connection_pool.connection_kwargs['port']}"
+            )
+        return (
+            f"<{self.__class__}.{self.__class__.__name__}"
+            f"(sentinels=[{','.join(sentinel_addresses)}])>"
+        )
+
+    def check_master_state(self, state: dict, service_name: str) -> bool:
+        if not state["is_master"] or state["is_sdown"] or state["is_odown"]:
+            return False
+        # Check if our sentinel doesn't see other nodes
+        if state["num-other-sentinels"] < self.min_other_sentinels:
+            return False
+        return True
+
+    async def discover_master(self, service_name: str):
+        """
+        Asks sentinel servers for the Redis master's address corresponding
+        to the service labeled ``service_name``.
+
+        Returns a pair (address, port) or raises MasterNotFoundError if no
+        master is found.
+        """
+        collected_errors = list()
+        for sentinel_no, sentinel in enumerate(self.sentinels):
+            try:
+                masters = await sentinel.sentinel_masters()
+            except (ConnectionError, TimeoutError) as e:
+                collected_errors.append(f"{sentinel} - {e!r}")
+                continue
+            state = masters.get(service_name)
+            if state and self.check_master_state(state, service_name):
+                # Put this sentinel at the top of the list
+                self.sentinels[0], self.sentinels[sentinel_no] = (
+                    sentinel,
+                    self.sentinels[0],
+                )
+
+                ip = (
+                    self._force_master_ip
+                    if self._force_master_ip is not None
+                    else state["ip"]
+                )
+                return ip, state["port"]
+
+        error_info = ""
+        if len(collected_errors) > 0:
+            error_info = f" : {', '.join(collected_errors)}"
+        raise MasterNotFoundError(f"No master found for {service_name!r}{error_info}")
+
+    def filter_slaves(
+        self, slaves: Iterable[Mapping]
+    ) -> Sequence[Tuple[EncodableT, EncodableT]]:
+        """Remove slaves that are in an ODOWN or SDOWN state"""
+        slaves_alive = []
+        for slave in slaves:
+            if slave["is_odown"] or slave["is_sdown"]:
+                continue
+            slaves_alive.append((slave["ip"], slave["port"]))
+        return slaves_alive
+
+    async def discover_slaves(
+        self, service_name: str
+    ) -> Sequence[Tuple[EncodableT, EncodableT]]:
+        """Returns a list of alive slaves for service ``service_name``"""
+        for sentinel in self.sentinels:
+            try:
+                slaves = await sentinel.sentinel_slaves(service_name)
+            except (ConnectionError, ResponseError, TimeoutError):
+                continue
+            slaves = self.filter_slaves(slaves)
+            if slaves:
+                return slaves
+        return []
+
+    def master_for(
+        self,
+        service_name: str,
+        redis_class: Type[Redis] = Redis,
+        connection_pool_class: Type[SentinelConnectionPool] = SentinelConnectionPool,
+        **kwargs,
+    ):
+        """
+        Returns a redis client instance for the ``service_name`` master.
+        Sentinel client will detect failover and reconnect Redis clients
+        automatically.
+
+        A :py:class:`~redis.sentinel.SentinelConnectionPool` class is
+        used to retrieve the master's address before establishing a new
+        connection.
+
+        NOTE: If the master's address has changed, any cached connections to
+        the old master are closed.
+
+        By default clients will be a :py:class:`~redis.Redis` instance.
+        Specify a different class to the ``redis_class`` argument if you
+        desire something different.
+
+        The ``connection_pool_class`` specifies the connection pool to
+        use.  The :py:class:`~redis.sentinel.SentinelConnectionPool`
+        will be used by default.
+
+        All other keyword arguments are merged with any connection_kwargs
+        passed to this class and passed to the connection pool as keyword
+        arguments to be used to initialize Redis connections.
+        """
+        kwargs["is_master"] = True
+        connection_kwargs = dict(self.connection_kwargs)
+        connection_kwargs.update(kwargs)
+
+        connection_pool = connection_pool_class(service_name, self, **connection_kwargs)
+        # The Redis object "owns" the pool
+        return redis_class.from_pool(connection_pool)
+
+    def slave_for(
+        self,
+        service_name: str,
+        redis_class: Type[Redis] = Redis,
+        connection_pool_class: Type[SentinelConnectionPool] = SentinelConnectionPool,
+        **kwargs,
+    ):
+        """
+        Returns redis client instance for the ``service_name`` slave(s).
+
+        A SentinelConnectionPool class is used to retrieve the slave's
+        address before establishing a new connection.
+
+        By default clients will be a :py:class:`~redis.Redis` instance.
+        Specify a different class to the ``redis_class`` argument if you
+        desire something different.
+
+        The ``connection_pool_class`` specifies the connection pool to use.
+        The SentinelConnectionPool will be used by default.
+
+        All other keyword arguments are merged with any connection_kwargs
+        passed to this class and passed to the connection pool as keyword
+        arguments to be used to initialize Redis connections.
+        """
+        kwargs["is_master"] = False
+        connection_kwargs = dict(self.connection_kwargs)
+        connection_kwargs.update(kwargs)
+
+        connection_pool = connection_pool_class(service_name, self, **connection_kwargs)
+        # The Redis object "owns" the pool
+        return redis_class.from_pool(connection_pool)

backend/.venv/lib/python3.12/site-packages/redis/asyncio/utils.py

@@ -0,0 +1,28 @@
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from redis.asyncio.client import Pipeline, Redis
+
+
+def from_url(url, **kwargs):
+    """
+    Returns an active Redis client generated from the given database URL.
+
+    Will attempt to extract the database id from the path url fragment, if
+    none is provided.
+    """
+    from redis.asyncio.client import Redis
+
+    return Redis.from_url(url, **kwargs)
+
+
+class pipeline:  # noqa: N801
+    def __init__(self, redis_obj: "Redis"):
+        self.p: "Pipeline" = redis_obj.pipeline()
+
+    async def __aenter__(self) -> "Pipeline":
+        return self.p
+
+    async def __aexit__(self, exc_type, exc_value, traceback):
+        await self.p.execute()
+        del self.p

backend/.venv/lib/python3.12/site-packages/redis/auth/err.py

@@ -0,0 +1,31 @@
+from typing import Iterable
+
+
+class RequestTokenErr(Exception):
+    """
+    Represents an exception during token request.
+    """
+
+    def __init__(self, *args):
+        super().__init__(*args)
+
+
+class InvalidTokenSchemaErr(Exception):
+    """
+    Represents an exception related to invalid token schema.
+    """
+
+    def __init__(self, missing_fields: Iterable[str] = []):
+        super().__init__(
+            "Unexpected token schema. Following fields are missing: "
+            + ", ".join(missing_fields)
+        )
+
+
+class TokenRenewalErr(Exception):
+    """
+    Represents an exception during token renewal process.
+    """
+
+    def __init__(self, *args):
+        super().__init__(*args)

backend/.venv/lib/python3.12/site-packages/redis/auth/idp.py

@@ -0,0 +1,28 @@
+from abc import ABC, abstractmethod
+
+from redis.auth.token import TokenInterface
+
+"""
+This interface is the facade of an identity provider
+"""
+
+
+class IdentityProviderInterface(ABC):
+    """
+    Receive a token from the identity provider.
+    Receiving a token only works when being authenticated.
+    """
+
+    @abstractmethod
+    def request_token(self, force_refresh=False) -> TokenInterface:
+        pass
+
+
+class IdentityProviderConfigInterface(ABC):
+    """
+    Configuration class that provides a configured identity provider.
+    """
+
+    @abstractmethod
+    def get_provider(self) -> IdentityProviderInterface:
+        pass

backend/.venv/lib/python3.12/site-packages/redis/auth/token.py

@@ -0,0 +1,130 @@
+from abc import ABC, abstractmethod
+from datetime import datetime, timezone
+
+from redis.auth.err import InvalidTokenSchemaErr
+
+
+class TokenInterface(ABC):
+    @abstractmethod
+    def is_expired(self) -> bool:
+        pass
+
+    @abstractmethod
+    def ttl(self) -> float:
+        pass
+
+    @abstractmethod
+    def try_get(self, key: str) -> str:
+        pass
+
+    @abstractmethod
+    def get_value(self) -> str:
+        pass
+
+    @abstractmethod
+    def get_expires_at_ms(self) -> float:
+        pass
+
+    @abstractmethod
+    def get_received_at_ms(self) -> float:
+        pass
+
+
+class TokenResponse:
+    def __init__(self, token: TokenInterface):
+        self._token = token
+
+    def get_token(self) -> TokenInterface:
+        return self._token
+
+    def get_ttl_ms(self) -> float:
+        return self._token.get_expires_at_ms() - self._token.get_received_at_ms()
+
+
+class SimpleToken(TokenInterface):
+    def __init__(
+        self, value: str, expires_at_ms: float, received_at_ms: float, claims: dict
+    ) -> None:
+        self.value = value
+        self.expires_at = expires_at_ms
+        self.received_at = received_at_ms
+        self.claims = claims
+
+    def ttl(self) -> float:
+        if self.expires_at == -1:
+            return -1
+
+        return self.expires_at - (datetime.now(timezone.utc).timestamp() * 1000)
+
+    def is_expired(self) -> bool:
+        if self.expires_at == -1:
+            return False
+
+        return self.ttl() <= 0
+
+    def try_get(self, key: str) -> str:
+        return self.claims.get(key)
+
+    def get_value(self) -> str:
+        return self.value
+
+    def get_expires_at_ms(self) -> float:
+        return self.expires_at
+
+    def get_received_at_ms(self) -> float:
+        return self.received_at
+
+
+class JWToken(TokenInterface):
+    REQUIRED_FIELDS = {"exp"}
+
+    def __init__(self, token: str):
+        try:
+            import jwt
+        except ImportError as ie:
+            raise ImportError(
+                f"The PyJWT library is required for {self.__class__.__name__}.",
+            ) from ie
+        self._value = token
+        self._decoded = jwt.decode(
+            self._value,
+            options={"verify_signature": False},
+            algorithms=[jwt.get_unverified_header(self._value).get("alg")],
+        )
+        self._validate_token()
+
+    def is_expired(self) -> bool:
+        exp = self._decoded["exp"]
+        if exp == -1:
+            return False
+
+        return (
+            self._decoded["exp"] * 1000 <= datetime.now(timezone.utc).timestamp() * 1000
+        )
+
+    def ttl(self) -> float:
+        exp = self._decoded["exp"]
+        if exp == -1:
+            return -1
+
+        return (
+            self._decoded["exp"] * 1000 - datetime.now(timezone.utc).timestamp() * 1000
+        )
+
+    def try_get(self, key: str) -> str:
+        return self._decoded.get(key)
+
+    def get_value(self) -> str:
+        return self._value
+
+    def get_expires_at_ms(self) -> float:
+        return float(self._decoded["exp"] * 1000)
+
+    def get_received_at_ms(self) -> float:
+        return datetime.now(timezone.utc).timestamp() * 1000
+
+    def _validate_token(self):
+        actual_fields = {x for x in self._decoded.keys()}
+
+        if len(self.REQUIRED_FIELDS - actual_fields) != 0:
+            raise InvalidTokenSchemaErr(self.REQUIRED_FIELDS - actual_fields)

backend/.venv/lib/python3.12/site-packages/redis/auth/token_manager.py

@@ -0,0 +1,370 @@
+import asyncio
+import logging
+import threading
+from datetime import datetime, timezone
+from time import sleep
+from typing import Any, Awaitable, Callable, Union
+
+from redis.auth.err import RequestTokenErr, TokenRenewalErr
+from redis.auth.idp import IdentityProviderInterface
+from redis.auth.token import TokenResponse
+
+logger = logging.getLogger(__name__)
+
+
+class CredentialsListener:
+    """
+    Listeners that will be notified on events related to credentials.
+    Accepts callbacks and awaitable callbacks.
+    """
+
+    def __init__(self):
+        self._on_next = None
+        self._on_error = None
+
+    @property
+    def on_next(self) -> Union[Callable[[Any], None], Awaitable]:
+        return self._on_next
+
+    @on_next.setter
+    def on_next(self, callback: Union[Callable[[Any], None], Awaitable]) -> None:
+        self._on_next = callback
+
+    @property
+    def on_error(self) -> Union[Callable[[Exception], None], Awaitable]:
+        return self._on_error
+
+    @on_error.setter
+    def on_error(self, callback: Union[Callable[[Exception], None], Awaitable]) -> None:
+        self._on_error = callback
+
+
+class RetryPolicy:
+    def __init__(self, max_attempts: int, delay_in_ms: float):
+        self.max_attempts = max_attempts
+        self.delay_in_ms = delay_in_ms
+
+    def get_max_attempts(self) -> int:
+        """
+        Retry attempts before exception will be thrown.
+
+        :return: int
+        """
+        return self.max_attempts
+
+    def get_delay_in_ms(self) -> float:
+        """
+        Delay between retries in seconds.
+
+        :return: int
+        """
+        return self.delay_in_ms
+
+
+class TokenManagerConfig:
+    def __init__(
+        self,
+        expiration_refresh_ratio: float,
+        lower_refresh_bound_millis: int,
+        token_request_execution_timeout_in_ms: int,
+        retry_policy: RetryPolicy,
+    ):
+        self._expiration_refresh_ratio = expiration_refresh_ratio
+        self._lower_refresh_bound_millis = lower_refresh_bound_millis
+        self._token_request_execution_timeout_in_ms = (
+            token_request_execution_timeout_in_ms
+        )
+        self._retry_policy = retry_policy
+
+    def get_expiration_refresh_ratio(self) -> float:
+        """
+        Represents the ratio of a token's lifetime at which a refresh should be triggered. # noqa: E501
+        For example, a value of 0.75 means the token should be refreshed
+        when 75% of its lifetime has elapsed (or when 25% of its lifetime remains).
+
+        :return: float
+        """
+
+        return self._expiration_refresh_ratio
+
+    def get_lower_refresh_bound_millis(self) -> int:
+        """
+        Represents the minimum time in milliseconds before token expiration
+        to trigger a refresh, in milliseconds.
+        This value sets a fixed lower bound for when a token refresh should occur,
+        regardless of the token's total lifetime.
+        If set to 0 there will be no lower bound and the refresh will be triggered
+        based on the expirationRefreshRatio only.
+
+        :return: int
+        """
+        return self._lower_refresh_bound_millis
+
+    def get_token_request_execution_timeout_in_ms(self) -> int:
+        """
+        Represents the maximum time in milliseconds to wait
+        for a token request to complete.
+
+        :return: int
+        """
+        return self._token_request_execution_timeout_in_ms
+
+    def get_retry_policy(self) -> RetryPolicy:
+        """
+        Represents the retry policy for token requests.
+
+        :return: RetryPolicy
+        """
+        return self._retry_policy
+
+
+class TokenManager:
+    def __init__(
+        self, identity_provider: IdentityProviderInterface, config: TokenManagerConfig
+    ):
+        self._idp = identity_provider
+        self._config = config
+        self._next_timer = None
+        self._listener = None
+        self._init_timer = None
+        self._retries = 0
+
+    def __del__(self):
+        logger.info("Token manager are disposed")
+        self.stop()
+
+    def start(
+        self,
+        listener: CredentialsListener,
+        skip_initial: bool = False,
+    ) -> Callable[[], None]:
+        self._listener = listener
+
+        try:
+            loop = asyncio.get_running_loop()
+        except RuntimeError:
+            # Run loop in a separate thread to unblock main thread.
+            loop = asyncio.new_event_loop()
+            thread = threading.Thread(
+                target=_start_event_loop_in_thread, args=(loop,), daemon=True
+            )
+            thread.start()
+
+        # Event to block for initial execution.
+        init_event = asyncio.Event()
+        self._init_timer = loop.call_later(
+            0, self._renew_token, skip_initial, init_event
+        )
+        logger.info("Token manager started")
+
+        # Blocks in thread-safe manner.
+        asyncio.run_coroutine_threadsafe(init_event.wait(), loop).result()
+        return self.stop
+
+    async def start_async(
+        self,
+        listener: CredentialsListener,
+        block_for_initial: bool = False,
+        initial_delay_in_ms: float = 0,
+        skip_initial: bool = False,
+    ) -> Callable[[], None]:
+        self._listener = listener
+
+        loop = asyncio.get_running_loop()
+        init_event = asyncio.Event()
+
+        # Wraps the async callback with async wrapper to schedule with loop.call_later()
+        wrapped = _async_to_sync_wrapper(
+            loop, self._renew_token_async, skip_initial, init_event
+        )
+        self._init_timer = loop.call_later(initial_delay_in_ms / 1000, wrapped)
+        logger.info("Token manager started")
+
+        if block_for_initial:
+            await init_event.wait()
+
+        return self.stop
+
+    def stop(self):
+        if self._init_timer is not None:
+            self._init_timer.cancel()
+        if self._next_timer is not None:
+            self._next_timer.cancel()
+
+    def acquire_token(self, force_refresh=False) -> TokenResponse:
+        try:
+            token = self._idp.request_token(force_refresh)
+        except RequestTokenErr as e:
+            if self._retries < self._config.get_retry_policy().get_max_attempts():
+                self._retries += 1
+                sleep(self._config.get_retry_policy().get_delay_in_ms() / 1000)
+                return self.acquire_token(force_refresh)
+            else:
+                raise e
+
+        self._retries = 0
+        return TokenResponse(token)
+
+    async def acquire_token_async(self, force_refresh=False) -> TokenResponse:
+        try:
+            token = self._idp.request_token(force_refresh)
+        except RequestTokenErr as e:
+            if self._retries < self._config.get_retry_policy().get_max_attempts():
+                self._retries += 1
+                await asyncio.sleep(
+                    self._config.get_retry_policy().get_delay_in_ms() / 1000
+                )
+                return await self.acquire_token_async(force_refresh)
+            else:
+                raise e
+
+        self._retries = 0
+        return TokenResponse(token)
+
+    def _calculate_renewal_delay(self, expire_date: float, issue_date: float) -> float:
+        delay_for_lower_refresh = self._delay_for_lower_refresh(expire_date)
+        delay_for_ratio_refresh = self._delay_for_ratio_refresh(expire_date, issue_date)
+        delay = min(delay_for_ratio_refresh, delay_for_lower_refresh)
+
+        return 0 if delay < 0 else delay / 1000
+
+    def _delay_for_lower_refresh(self, expire_date: float):
+        return (
+            expire_date
+            - self._config.get_lower_refresh_bound_millis()
+            - (datetime.now(timezone.utc).timestamp() * 1000)
+        )
+
+    def _delay_for_ratio_refresh(self, expire_date: float, issue_date: float):
+        token_ttl = expire_date - issue_date
+        refresh_before = token_ttl - (
+            token_ttl * self._config.get_expiration_refresh_ratio()
+        )
+
+        return (
+            expire_date
+            - refresh_before
+            - (datetime.now(timezone.utc).timestamp() * 1000)
+        )
+
+    def _renew_token(
+        self, skip_initial: bool = False, init_event: asyncio.Event = None
+    ):
+        """
+        Task to renew token from identity provider.
+        Schedules renewal tasks based on token TTL.
+        """
+
+        try:
+            token_res = self.acquire_token(force_refresh=True)
+            delay = self._calculate_renewal_delay(
+                token_res.get_token().get_expires_at_ms(),
+                token_res.get_token().get_received_at_ms(),
+            )
+
+            if token_res.get_token().is_expired():
+                raise TokenRenewalErr("Requested token is expired")
+
+            if self._listener.on_next is None:
+                logger.warning(
+                    "No registered callback for token renewal task. Renewal cancelled"
+                )
+                return
+
+            if not skip_initial:
+                try:
+                    self._listener.on_next(token_res.get_token())
+                except Exception as e:
+                    raise TokenRenewalErr(e)
+
+            if delay <= 0:
+                return
+
+            loop = asyncio.get_running_loop()
+            self._next_timer = loop.call_later(delay, self._renew_token)
+            logger.info(f"Next token renewal scheduled in {delay} seconds")
+            return token_res
+        except Exception as e:
+            if self._listener.on_error is None:
+                raise e
+
+            self._listener.on_error(e)
+        finally:
+            if init_event:
+                init_event.set()
+
+    async def _renew_token_async(
+        self, skip_initial: bool = False, init_event: asyncio.Event = None
+    ):
+        """
+        Async task to renew tokens from identity provider.
+        Schedules renewal tasks based on token TTL.
+        """
+
+        try:
+            token_res = await self.acquire_token_async(force_refresh=True)
+            delay = self._calculate_renewal_delay(
+                token_res.get_token().get_expires_at_ms(),
+                token_res.get_token().get_received_at_ms(),
+            )
+
+            if token_res.get_token().is_expired():
+                raise TokenRenewalErr("Requested token is expired")
+
+            if self._listener.on_next is None:
+                logger.warning(
+                    "No registered callback for token renewal task. Renewal cancelled"
+                )
+                return
+
+            if not skip_initial:
+                try:
+                    await self._listener.on_next(token_res.get_token())
+                except Exception as e:
+                    raise TokenRenewalErr(e)
+
+            if delay <= 0:
+                return
+
+            loop = asyncio.get_running_loop()
+            wrapped = _async_to_sync_wrapper(loop, self._renew_token_async)
+            logger.info(f"Next token renewal scheduled in {delay} seconds")
+            loop.call_later(delay, wrapped)
+        except Exception as e:
+            if self._listener.on_error is None:
+                raise e
+
+            await self._listener.on_error(e)
+        finally:
+            if init_event:
+                init_event.set()
+
+
+def _async_to_sync_wrapper(loop, coro_func, *args, **kwargs):
+    """
+    Wraps an asynchronous function so it can be used with loop.call_later.
+
+    :param loop: The event loop in which the coroutine will be executed.
+    :param coro_func: The coroutine function to wrap.
+    :param args: Positional arguments to pass to the coroutine function.
+    :param kwargs: Keyword arguments to pass to the coroutine function.
+    :return: A regular function suitable for loop.call_later.
+    """
+
+    def wrapped():
+        # Schedule the coroutine in the event loop
+        asyncio.ensure_future(coro_func(*args, **kwargs), loop=loop)
+
+    return wrapped
+
+
+def _start_event_loop_in_thread(event_loop: asyncio.AbstractEventLoop):
+    """
+    Starts event loop in a thread.
+    Used to be able to schedule tasks using loop.call_later.
+
+    :param event_loop:
+    :return:
+    """
+    asyncio.set_event_loop(event_loop)
+    event_loop.run_forever()

backend/.venv/lib/python3.12/site-packages/redis/background.py

@@ -0,0 +1,204 @@
+import asyncio
+import threading
+from typing import Any, Callable, Coroutine
+
+
+class BackgroundScheduler:
+    """
+    Schedules background tasks execution either in separate thread or in the running event loop.
+    """
+
+    def __init__(self):
+        self._next_timer = None
+        self._event_loops = []
+        self._lock = threading.Lock()
+        self._stopped = False
+
+    def __del__(self):
+        self.stop()
+
+    def stop(self):
+        """
+        Stop all scheduled tasks and clean up resources.
+        """
+        with self._lock:
+            if self._stopped:
+                return
+            self._stopped = True
+
+            if self._next_timer:
+                self._next_timer.cancel()
+                self._next_timer = None
+
+            # Stop all event loops
+            for loop in self._event_loops:
+                if loop.is_running():
+                    loop.call_soon_threadsafe(loop.stop)
+
+            self._event_loops.clear()
+
+    def run_once(self, delay: float, callback: Callable, *args):
+        """
+        Runs callable task once after certain delay in seconds.
+        """
+        with self._lock:
+            if self._stopped:
+                return
+
+        # Run loop in a separate thread to unblock main thread.
+        loop = asyncio.new_event_loop()
+
+        with self._lock:
+            self._event_loops.append(loop)
+
+        thread = threading.Thread(
+            target=_start_event_loop_in_thread,
+            args=(loop, self._call_later, delay, callback, *args),
+            daemon=True,
+        )
+        thread.start()
+
+    def run_recurring(self, interval: float, callback: Callable, *args):
+        """
+        Runs recurring callable task with given interval in seconds.
+        """
+        with self._lock:
+            if self._stopped:
+                return
+
+        # Run loop in a separate thread to unblock main thread.
+        loop = asyncio.new_event_loop()
+
+        with self._lock:
+            self._event_loops.append(loop)
+
+        thread = threading.Thread(
+            target=_start_event_loop_in_thread,
+            args=(loop, self._call_later_recurring, interval, callback, *args),
+            daemon=True,
+        )
+        thread.start()
+
+    async def run_recurring_async(
+        self, interval: float, coro: Callable[..., Coroutine[Any, Any, Any]], *args
+    ):
+        """
+        Runs recurring coroutine with given interval in seconds in the current event loop.
+        To be used only from an async context. No additional threads are created.
+        """
+        with self._lock:
+            if self._stopped:
+                return
+
+        loop = asyncio.get_running_loop()
+        wrapped = _async_to_sync_wrapper(loop, coro, *args)
+
+        def tick():
+            with self._lock:
+                if self._stopped:
+                    return
+            # Schedule the coroutine
+            wrapped()
+            # Schedule next tick
+            self._next_timer = loop.call_later(interval, tick)
+
+        # Schedule first tick
+        self._next_timer = loop.call_later(interval, tick)
+
+    def _call_later(
+        self, loop: asyncio.AbstractEventLoop, delay: float, callback: Callable, *args
+    ):
+        with self._lock:
+            if self._stopped:
+                return
+        self._next_timer = loop.call_later(delay, callback, *args)
+
+    def _call_later_recurring(
+        self,
+        loop: asyncio.AbstractEventLoop,
+        interval: float,
+        callback: Callable,
+        *args,
+    ):
+        with self._lock:
+            if self._stopped:
+                return
+        self._call_later(
+            loop, interval, self._execute_recurring, loop, interval, callback, *args
+        )
+
+    def _execute_recurring(
+        self,
+        loop: asyncio.AbstractEventLoop,
+        interval: float,
+        callback: Callable,
+        *args,
+    ):
+        """
+        Executes recurring callable task with given interval in seconds.
+        """
+        with self._lock:
+            if self._stopped:
+                return
+
+        try:
+            callback(*args)
+        except Exception:
+            # Silently ignore exceptions during shutdown
+            pass
+
+        with self._lock:
+            if self._stopped:
+                return
+
+        self._call_later(
+            loop, interval, self._execute_recurring, loop, interval, callback, *args
+        )
+
+
+def _start_event_loop_in_thread(
+    event_loop: asyncio.AbstractEventLoop, call_soon_cb: Callable, *args
+):
+    """
+    Starts event loop in a thread and schedule callback as soon as event loop is ready.
+    Used to be able to schedule tasks using loop.call_later.
+
+    :param event_loop:
+    :return:
+    """
+    asyncio.set_event_loop(event_loop)
+    event_loop.call_soon(call_soon_cb, event_loop, *args)
+    try:
+        event_loop.run_forever()
+    finally:
+        try:
+            # Clean up pending tasks
+            pending = asyncio.all_tasks(event_loop)
+            for task in pending:
+                task.cancel()
+            # Run loop once more to process cancellations
+            event_loop.run_until_complete(
+                asyncio.gather(*pending, return_exceptions=True)
+            )
+        except Exception:
+            pass
+        finally:
+            event_loop.close()
+
+
+def _async_to_sync_wrapper(loop, coro_func, *args, **kwargs):
+    """
+    Wraps an asynchronous function so it can be used with loop.call_later.
+
+    :param loop: The event loop in which the coroutine will be executed.
+    :param coro_func: The coroutine function to wrap.
+    :param args: Positional arguments to pass to the coroutine function.
+    :param kwargs: Keyword arguments to pass to the coroutine function.
+    :return: A regular function suitable for loop.call_later.
+    """
+
+    def wrapped():
+        # Schedule the coroutine in the event loop
+        asyncio.ensure_future(coro_func(*args, **kwargs), loop=loop)
+
+    return wrapped

backend/.venv/lib/python3.12/site-packages/redis/backoff.py

@@ -0,0 +1,183 @@
+import random
+from abc import ABC, abstractmethod
+
+# Maximum backoff between each retry in seconds
+DEFAULT_CAP = 0.512
+# Minimum backoff between each retry in seconds
+DEFAULT_BASE = 0.008
+
+
+class AbstractBackoff(ABC):
+    """Backoff interface"""
+
+    def reset(self):
+        """
+        Reset internal state before an operation.
+        `reset` is called once at the beginning of
+        every call to `Retry.call_with_retry`
+        """
+        pass
+
+    @abstractmethod
+    def compute(self, failures: int) -> float:
+        """Compute backoff in seconds upon failure"""
+        pass
+
+
+class ConstantBackoff(AbstractBackoff):
+    """Constant backoff upon failure"""
+
+    def __init__(self, backoff: float) -> None:
+        """`backoff`: backoff time in seconds"""
+        self._backoff = backoff
+
+    def __hash__(self) -> int:
+        return hash((self._backoff,))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, ConstantBackoff):
+            return NotImplemented
+
+        return self._backoff == other._backoff
+
+    def compute(self, failures: int) -> float:
+        return self._backoff
+
+
+class NoBackoff(ConstantBackoff):
+    """No backoff upon failure"""
+
+    def __init__(self) -> None:
+        super().__init__(0)
+
+
+class ExponentialBackoff(AbstractBackoff):
+    """Exponential backoff upon failure"""
+
+    def __init__(self, cap: float = DEFAULT_CAP, base: float = DEFAULT_BASE):
+        """
+        `cap`: maximum backoff time in seconds
+        `base`: base backoff time in seconds
+        """
+        self._cap = cap
+        self._base = base
+
+    def __hash__(self) -> int:
+        return hash((self._base, self._cap))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, ExponentialBackoff):
+            return NotImplemented
+
+        return self._base == other._base and self._cap == other._cap
+
+    def compute(self, failures: int) -> float:
+        return min(self._cap, self._base * 2**failures)
+
+
+class FullJitterBackoff(AbstractBackoff):
+    """Full jitter backoff upon failure"""
+
+    def __init__(self, cap: float = DEFAULT_CAP, base: float = DEFAULT_BASE) -> None:
+        """
+        `cap`: maximum backoff time in seconds
+        `base`: base backoff time in seconds
+        """
+        self._cap = cap
+        self._base = base
+
+    def __hash__(self) -> int:
+        return hash((self._base, self._cap))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, FullJitterBackoff):
+            return NotImplemented
+
+        return self._base == other._base and self._cap == other._cap
+
+    def compute(self, failures: int) -> float:
+        return random.uniform(0, min(self._cap, self._base * 2**failures))
+
+
+class EqualJitterBackoff(AbstractBackoff):
+    """Equal jitter backoff upon failure"""
+
+    def __init__(self, cap: float = DEFAULT_CAP, base: float = DEFAULT_BASE) -> None:
+        """
+        `cap`: maximum backoff time in seconds
+        `base`: base backoff time in seconds
+        """
+        self._cap = cap
+        self._base = base
+
+    def __hash__(self) -> int:
+        return hash((self._base, self._cap))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, EqualJitterBackoff):
+            return NotImplemented
+
+        return self._base == other._base and self._cap == other._cap
+
+    def compute(self, failures: int) -> float:
+        temp = min(self._cap, self._base * 2**failures) / 2
+        return temp + random.uniform(0, temp)
+
+
+class DecorrelatedJitterBackoff(AbstractBackoff):
+    """Decorrelated jitter backoff upon failure"""
+
+    def __init__(self, cap: float = DEFAULT_CAP, base: float = DEFAULT_BASE) -> None:
+        """
+        `cap`: maximum backoff time in seconds
+        `base`: base backoff time in seconds
+        """
+        self._cap = cap
+        self._base = base
+        self._previous_backoff = 0
+
+    def __hash__(self) -> int:
+        return hash((self._base, self._cap))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, DecorrelatedJitterBackoff):
+            return NotImplemented
+
+        return self._base == other._base and self._cap == other._cap
+
+    def reset(self) -> None:
+        self._previous_backoff = 0
+
+    def compute(self, failures: int) -> float:
+        max_backoff = max(self._base, self._previous_backoff * 3)
+        temp = random.uniform(self._base, max_backoff)
+        self._previous_backoff = min(self._cap, temp)
+        return self._previous_backoff
+
+
+class ExponentialWithJitterBackoff(AbstractBackoff):
+    """Exponential backoff upon failure, with jitter"""
+
+    def __init__(self, cap: float = DEFAULT_CAP, base: float = DEFAULT_BASE) -> None:
+        """
+        `cap`: maximum backoff time in seconds
+        `base`: base backoff time in seconds
+        """
+        self._cap = cap
+        self._base = base
+
+    def __hash__(self) -> int:
+        return hash((self._base, self._cap))
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, ExponentialWithJitterBackoff):
+            return NotImplemented
+
+        return self._base == other._base and self._cap == other._cap
+
+    def compute(self, failures: int) -> float:
+        return min(self._cap, random.random() * self._base * 2**failures)
+
+
+def default_backoff():
+    return EqualJitterBackoff()

backend/.venv/lib/python3.12/site-packages/redis/cache.py

@@ -0,0 +1,402 @@
+from abc import ABC, abstractmethod
+from collections import OrderedDict
+from dataclasses import dataclass
+from enum import Enum
+from typing import Any, List, Optional, Union
+
+
+class CacheEntryStatus(Enum):
+    VALID = "VALID"
+    IN_PROGRESS = "IN_PROGRESS"
+
+
+class EvictionPolicyType(Enum):
+    time_based = "time_based"
+    frequency_based = "frequency_based"
+
+
+@dataclass(frozen=True)
+class CacheKey:
+    command: str
+    redis_keys: tuple
+
+
+class CacheEntry:
+    def __init__(
+        self,
+        cache_key: CacheKey,
+        cache_value: bytes,
+        status: CacheEntryStatus,
+        connection_ref,
+    ):
+        self.cache_key = cache_key
+        self.cache_value = cache_value
+        self.status = status
+        self.connection_ref = connection_ref
+
+    def __hash__(self):
+        return hash(
+            (self.cache_key, self.cache_value, self.status, self.connection_ref)
+        )
+
+    def __eq__(self, other):
+        return hash(self) == hash(other)
+
+
+class EvictionPolicyInterface(ABC):
+    @property
+    @abstractmethod
+    def cache(self):
+        pass
+
+    @cache.setter
+    @abstractmethod
+    def cache(self, value):
+        pass
+
+    @property
+    @abstractmethod
+    def type(self) -> EvictionPolicyType:
+        pass
+
+    @abstractmethod
+    def evict_next(self) -> CacheKey:
+        pass
+
+    @abstractmethod
+    def evict_many(self, count: int) -> List[CacheKey]:
+        pass
+
+    @abstractmethod
+    def touch(self, cache_key: CacheKey) -> None:
+        pass
+
+
+class CacheConfigurationInterface(ABC):
+    @abstractmethod
+    def get_cache_class(self):
+        pass
+
+    @abstractmethod
+    def get_max_size(self) -> int:
+        pass
+
+    @abstractmethod
+    def get_eviction_policy(self):
+        pass
+
+    @abstractmethod
+    def is_exceeds_max_size(self, count: int) -> bool:
+        pass
+
+    @abstractmethod
+    def is_allowed_to_cache(self, command: str) -> bool:
+        pass
+
+
+class CacheInterface(ABC):
+    @property
+    @abstractmethod
+    def collection(self) -> OrderedDict:
+        pass
+
+    @property
+    @abstractmethod
+    def config(self) -> CacheConfigurationInterface:
+        pass
+
+    @property
+    @abstractmethod
+    def eviction_policy(self) -> EvictionPolicyInterface:
+        pass
+
+    @property
+    @abstractmethod
+    def size(self) -> int:
+        pass
+
+    @abstractmethod
+    def get(self, key: CacheKey) -> Union[CacheEntry, None]:
+        pass
+
+    @abstractmethod
+    def set(self, entry: CacheEntry) -> bool:
+        pass
+
+    @abstractmethod
+    def delete_by_cache_keys(self, cache_keys: List[CacheKey]) -> List[bool]:
+        pass
+
+    @abstractmethod
+    def delete_by_redis_keys(self, redis_keys: List[bytes]) -> List[bool]:
+        pass
+
+    @abstractmethod
+    def flush(self) -> int:
+        pass
+
+    @abstractmethod
+    def is_cachable(self, key: CacheKey) -> bool:
+        pass
+
+
+class DefaultCache(CacheInterface):
+    def __init__(
+        self,
+        cache_config: CacheConfigurationInterface,
+    ) -> None:
+        self._cache = OrderedDict()
+        self._cache_config = cache_config
+        self._eviction_policy = self._cache_config.get_eviction_policy().value()
+        self._eviction_policy.cache = self
+
+    @property
+    def collection(self) -> OrderedDict:
+        return self._cache
+
+    @property
+    def config(self) -> CacheConfigurationInterface:
+        return self._cache_config
+
+    @property
+    def eviction_policy(self) -> EvictionPolicyInterface:
+        return self._eviction_policy
+
+    @property
+    def size(self) -> int:
+        return len(self._cache)
+
+    def set(self, entry: CacheEntry) -> bool:
+        if not self.is_cachable(entry.cache_key):
+            return False
+
+        self._cache[entry.cache_key] = entry
+        self._eviction_policy.touch(entry.cache_key)
+
+        if self._cache_config.is_exceeds_max_size(len(self._cache)):
+            self._eviction_policy.evict_next()
+
+        return True
+
+    def get(self, key: CacheKey) -> Union[CacheEntry, None]:
+        entry = self._cache.get(key, None)
+
+        if entry is None:
+            return None
+
+        self._eviction_policy.touch(key)
+        return entry
+
+    def delete_by_cache_keys(self, cache_keys: List[CacheKey]) -> List[bool]:
+        response = []
+
+        for key in cache_keys:
+            if self.get(key) is not None:
+                self._cache.pop(key)
+                response.append(True)
+            else:
+                response.append(False)
+
+        return response
+
+    def delete_by_redis_keys(self, redis_keys: List[bytes]) -> List[bool]:
+        response = []
+        keys_to_delete = []
+
+        for redis_key in redis_keys:
+            if isinstance(redis_key, bytes):
+                redis_key = redis_key.decode()
+            for cache_key in self._cache:
+                if redis_key in cache_key.redis_keys:
+                    keys_to_delete.append(cache_key)
+                    response.append(True)
+
+        for key in keys_to_delete:
+            self._cache.pop(key)
+
+        return response
+
+    def flush(self) -> int:
+        elem_count = len(self._cache)
+        self._cache.clear()
+        return elem_count
+
+    def is_cachable(self, key: CacheKey) -> bool:
+        return self._cache_config.is_allowed_to_cache(key.command)
+
+
+class LRUPolicy(EvictionPolicyInterface):
+    def __init__(self):
+        self.cache = None
+
+    @property
+    def cache(self):
+        return self._cache
+
+    @cache.setter
+    def cache(self, cache: CacheInterface):
+        self._cache = cache
+
+    @property
+    def type(self) -> EvictionPolicyType:
+        return EvictionPolicyType.time_based
+
+    def evict_next(self) -> CacheKey:
+        self._assert_cache()
+        popped_entry = self._cache.collection.popitem(last=False)
+        return popped_entry[0]
+
+    def evict_many(self, count: int) -> List[CacheKey]:
+        self._assert_cache()
+        if count > len(self._cache.collection):
+            raise ValueError("Evictions count is above cache size")
+
+        popped_keys = []
+
+        for _ in range(count):
+            popped_entry = self._cache.collection.popitem(last=False)
+            popped_keys.append(popped_entry[0])
+
+        return popped_keys
+
+    def touch(self, cache_key: CacheKey) -> None:
+        self._assert_cache()
+
+        if self._cache.collection.get(cache_key) is None:
+            raise ValueError("Given entry does not belong to the cache")
+
+        self._cache.collection.move_to_end(cache_key)
+
+    def _assert_cache(self):
+        if self.cache is None or not isinstance(self.cache, CacheInterface):
+            raise ValueError("Eviction policy should be associated with valid cache.")
+
+
+class EvictionPolicy(Enum):
+    LRU = LRUPolicy
+
+
+class CacheConfig(CacheConfigurationInterface):
+    DEFAULT_CACHE_CLASS = DefaultCache
+    DEFAULT_EVICTION_POLICY = EvictionPolicy.LRU
+    DEFAULT_MAX_SIZE = 10000
+
+    DEFAULT_ALLOW_LIST = [
+        "BITCOUNT",
+        "BITFIELD_RO",
+        "BITPOS",
+        "EXISTS",
+        "GEODIST",
+        "GEOHASH",
+        "GEOPOS",
+        "GEORADIUSBYMEMBER_RO",
+        "GEORADIUS_RO",
+        "GEOSEARCH",
+        "GET",
+        "GETBIT",
+        "GETRANGE",
+        "HEXISTS",
+        "HGET",
+        "HGETALL",
+        "HKEYS",
+        "HLEN",
+        "HMGET",
+        "HSTRLEN",
+        "HVALS",
+        "JSON.ARRINDEX",
+        "JSON.ARRLEN",
+        "JSON.GET",
+        "JSON.MGET",
+        "JSON.OBJKEYS",
+        "JSON.OBJLEN",
+        "JSON.RESP",
+        "JSON.STRLEN",
+        "JSON.TYPE",
+        "LCS",
+        "LINDEX",
+        "LLEN",
+        "LPOS",
+        "LRANGE",
+        "MGET",
+        "SCARD",
+        "SDIFF",
+        "SINTER",
+        "SINTERCARD",
+        "SISMEMBER",
+        "SMEMBERS",
+        "SMISMEMBER",
+        "SORT_RO",
+        "STRLEN",
+        "SUBSTR",
+        "SUNION",
+        "TS.GET",
+        "TS.INFO",
+        "TS.RANGE",
+        "TS.REVRANGE",
+        "TYPE",
+        "XLEN",
+        "XPENDING",
+        "XRANGE",
+        "XREAD",
+        "XREVRANGE",
+        "ZCARD",
+        "ZCOUNT",
+        "ZDIFF",
+        "ZINTER",
+        "ZINTERCARD",
+        "ZLEXCOUNT",
+        "ZMSCORE",
+        "ZRANGE",
+        "ZRANGEBYLEX",
+        "ZRANGEBYSCORE",
+        "ZRANK",
+        "ZREVRANGE",
+        "ZREVRANGEBYLEX",
+        "ZREVRANGEBYSCORE",
+        "ZREVRANK",
+        "ZSCORE",
+        "ZUNION",
+    ]
+
+    def __init__(
+        self,
+        max_size: int = DEFAULT_MAX_SIZE,
+        cache_class: Any = DEFAULT_CACHE_CLASS,
+        eviction_policy: EvictionPolicy = DEFAULT_EVICTION_POLICY,
+    ):
+        self._cache_class = cache_class
+        self._max_size = max_size
+        self._eviction_policy = eviction_policy
+
+    def get_cache_class(self):
+        return self._cache_class
+
+    def get_max_size(self) -> int:
+        return self._max_size
+
+    def get_eviction_policy(self) -> EvictionPolicy:
+        return self._eviction_policy
+
+    def is_exceeds_max_size(self, count: int) -> bool:
+        return count > self._max_size
+
+    def is_allowed_to_cache(self, command: str) -> bool:
+        return command in self.DEFAULT_ALLOW_LIST
+
+
+class CacheFactoryInterface(ABC):
+    @abstractmethod
+    def get_cache(self) -> CacheInterface:
+        pass
+
+
+class CacheFactory(CacheFactoryInterface):
+    def __init__(self, cache_config: Optional[CacheConfig] = None):
+        self._config = cache_config
+
+        if self._config is None:
+            self._config = CacheConfig()
+
+    def get_cache(self) -> CacheInterface:
+        cache_class = self._config.get_cache_class()
+        return cache_class(cache_config=self._config)

backend/.venv/lib/python3.12/site-packages/redis/commands/__init__.py

@@ -0,0 +1,18 @@
+from .cluster import READ_COMMANDS, AsyncRedisClusterCommands, RedisClusterCommands
+from .core import AsyncCoreCommands, CoreCommands
+from .helpers import list_or_args
+from .redismodules import AsyncRedisModuleCommands, RedisModuleCommands
+from .sentinel import AsyncSentinelCommands, SentinelCommands
+
+__all__ = [
+    "AsyncCoreCommands",
+    "AsyncRedisClusterCommands",
+    "AsyncRedisModuleCommands",
+    "AsyncSentinelCommands",
+    "CoreCommands",
+    "READ_COMMANDS",
+    "RedisClusterCommands",
+    "RedisModuleCommands",
+    "SentinelCommands",
+    "list_or_args",
+]

backend/.venv/lib/python3.12/site-packages/redis/commands/bf/__init__.py

@@ -0,0 +1,253 @@
+from redis._parsers.helpers import bool_ok
+
+from ..helpers import get_protocol_version, parse_to_list
+from .commands import *  # noqa
+from .info import BFInfo, CFInfo, CMSInfo, TDigestInfo, TopKInfo
+
+
+class AbstractBloom:
+    """
+    The client allows to interact with RedisBloom and use all of
+    it's functionality.
+
+    - BF for Bloom Filter
+    - CF for Cuckoo Filter
+    - CMS for Count-Min Sketch
+    - TOPK for TopK Data Structure
+    - TDIGEST for estimate rank statistics
+    """
+
+    @staticmethod
+    def append_items(params, items):
+        """Append ITEMS to params."""
+        params.extend(["ITEMS"])
+        params += items
+
+    @staticmethod
+    def append_error(params, error):
+        """Append ERROR to params."""
+        if error is not None:
+            params.extend(["ERROR", error])
+
+    @staticmethod
+    def append_capacity(params, capacity):
+        """Append CAPACITY to params."""
+        if capacity is not None:
+            params.extend(["CAPACITY", capacity])
+
+    @staticmethod
+    def append_expansion(params, expansion):
+        """Append EXPANSION to params."""
+        if expansion is not None:
+            params.extend(["EXPANSION", expansion])
+
+    @staticmethod
+    def append_no_scale(params, noScale):
+        """Append NONSCALING tag to params."""
+        if noScale is not None:
+            params.extend(["NONSCALING"])
+
+    @staticmethod
+    def append_weights(params, weights):
+        """Append WEIGHTS to params."""
+        if len(weights) > 0:
+            params.append("WEIGHTS")
+            params += weights
+
+    @staticmethod
+    def append_no_create(params, noCreate):
+        """Append NOCREATE tag to params."""
+        if noCreate is not None:
+            params.extend(["NOCREATE"])
+
+    @staticmethod
+    def append_items_and_increments(params, items, increments):
+        """Append pairs of items and increments to params."""
+        for i in range(len(items)):
+            params.append(items[i])
+            params.append(increments[i])
+
+    @staticmethod
+    def append_values_and_weights(params, items, weights):
+        """Append pairs of items and weights to params."""
+        for i in range(len(items)):
+            params.append(items[i])
+            params.append(weights[i])
+
+    @staticmethod
+    def append_max_iterations(params, max_iterations):
+        """Append MAXITERATIONS to params."""
+        if max_iterations is not None:
+            params.extend(["MAXITERATIONS", max_iterations])
+
+    @staticmethod
+    def append_bucket_size(params, bucket_size):
+        """Append BUCKETSIZE to params."""
+        if bucket_size is not None:
+            params.extend(["BUCKETSIZE", bucket_size])
+
+
+class CMSBloom(CMSCommands, AbstractBloom):
+    def __init__(self, client, **kwargs):
+        """Create a new RedisBloom client."""
+        # Set the module commands' callbacks
+        _MODULE_CALLBACKS = {
+            CMS_INITBYDIM: bool_ok,
+            CMS_INITBYPROB: bool_ok,
+            # CMS_INCRBY: spaceHolder,
+            # CMS_QUERY: spaceHolder,
+            CMS_MERGE: bool_ok,
+        }
+
+        _RESP2_MODULE_CALLBACKS = {
+            CMS_INFO: CMSInfo,
+        }
+        _RESP3_MODULE_CALLBACKS = {}
+
+        self.client = client
+        self.commandmixin = CMSCommands
+        self.execute_command = client.execute_command
+
+        if get_protocol_version(self.client) in ["3", 3]:
+            _MODULE_CALLBACKS.update(_RESP3_MODULE_CALLBACKS)
+        else:
+            _MODULE_CALLBACKS.update(_RESP2_MODULE_CALLBACKS)
+
+        for k, v in _MODULE_CALLBACKS.items():
+            self.client.set_response_callback(k, v)
+
+
+class TOPKBloom(TOPKCommands, AbstractBloom):
+    def __init__(self, client, **kwargs):
+        """Create a new RedisBloom client."""
+        # Set the module commands' callbacks
+        _MODULE_CALLBACKS = {
+            TOPK_RESERVE: bool_ok,
+            # TOPK_QUERY: spaceHolder,
+            # TOPK_COUNT: spaceHolder,
+        }
+
+        _RESP2_MODULE_CALLBACKS = {
+            TOPK_ADD: parse_to_list,
+            TOPK_INCRBY: parse_to_list,
+            TOPK_INFO: TopKInfo,
+            TOPK_LIST: parse_to_list,
+        }
+        _RESP3_MODULE_CALLBACKS = {}
+
+        self.client = client
+        self.commandmixin = TOPKCommands
+        self.execute_command = client.execute_command
+
+        if get_protocol_version(self.client) in ["3", 3]:
+            _MODULE_CALLBACKS.update(_RESP3_MODULE_CALLBACKS)
+        else:
+            _MODULE_CALLBACKS.update(_RESP2_MODULE_CALLBACKS)
+
+        for k, v in _MODULE_CALLBACKS.items():
+            self.client.set_response_callback(k, v)
+
+
+class CFBloom(CFCommands, AbstractBloom):
+    def __init__(self, client, **kwargs):
+        """Create a new RedisBloom client."""
+        # Set the module commands' callbacks
+        _MODULE_CALLBACKS = {
+            CF_RESERVE: bool_ok,
+            # CF_ADD: spaceHolder,
+            # CF_ADDNX: spaceHolder,
+            # CF_INSERT: spaceHolder,
+            # CF_INSERTNX: spaceHolder,
+            # CF_EXISTS: spaceHolder,
+            # CF_DEL: spaceHolder,
+            # CF_COUNT: spaceHolder,
+            # CF_SCANDUMP: spaceHolder,
+            # CF_LOADCHUNK: spaceHolder,
+        }
+
+        _RESP2_MODULE_CALLBACKS = {
+            CF_INFO: CFInfo,
+        }
+        _RESP3_MODULE_CALLBACKS = {}
+
+        self.client = client
+        self.commandmixin = CFCommands
+        self.execute_command = client.execute_command
+
+        if get_protocol_version(self.client) in ["3", 3]:
+            _MODULE_CALLBACKS.update(_RESP3_MODULE_CALLBACKS)
+        else:
+            _MODULE_CALLBACKS.update(_RESP2_MODULE_CALLBACKS)
+
+        for k, v in _MODULE_CALLBACKS.items():
+            self.client.set_response_callback(k, v)
+
+
+class TDigestBloom(TDigestCommands, AbstractBloom):
+    def __init__(self, client, **kwargs):
+        """Create a new RedisBloom client."""
+        # Set the module commands' callbacks
+        _MODULE_CALLBACKS = {
+            TDIGEST_CREATE: bool_ok,
+            # TDIGEST_RESET: bool_ok,
+            # TDIGEST_ADD: spaceHolder,
+            # TDIGEST_MERGE: spaceHolder,
+        }
+
+        _RESP2_MODULE_CALLBACKS = {
+            TDIGEST_BYRANK: parse_to_list,
+            TDIGEST_BYREVRANK: parse_to_list,
+            TDIGEST_CDF: parse_to_list,
+            TDIGEST_INFO: TDigestInfo,
+            TDIGEST_MIN: float,
+            TDIGEST_MAX: float,
+            TDIGEST_TRIMMED_MEAN: float,
+            TDIGEST_QUANTILE: parse_to_list,
+        }
+        _RESP3_MODULE_CALLBACKS = {}
+
+        self.client = client
+        self.commandmixin = TDigestCommands
+        self.execute_command = client.execute_command
+
+        if get_protocol_version(self.client) in ["3", 3]:
+            _MODULE_CALLBACKS.update(_RESP3_MODULE_CALLBACKS)
+        else:
+            _MODULE_CALLBACKS.update(_RESP2_MODULE_CALLBACKS)
+
+        for k, v in _MODULE_CALLBACKS.items():
+            self.client.set_response_callback(k, v)
+
+
+class BFBloom(BFCommands, AbstractBloom):
+    def __init__(self, client, **kwargs):
+        """Create a new RedisBloom client."""
+        # Set the module commands' callbacks
+        _MODULE_CALLBACKS = {
+            BF_RESERVE: bool_ok,
+            # BF_ADD: spaceHolder,
+            # BF_MADD: spaceHolder,
+            # BF_INSERT: spaceHolder,
+            # BF_EXISTS: spaceHolder,
+            # BF_MEXISTS: spaceHolder,
+            # BF_SCANDUMP: spaceHolder,
+            # BF_LOADCHUNK: spaceHolder,
+            # BF_CARD: spaceHolder,
+        }
+
+        _RESP2_MODULE_CALLBACKS = {
+            BF_INFO: BFInfo,
+        }
+        _RESP3_MODULE_CALLBACKS = {}
+
+        self.client = client
+        self.commandmixin = BFCommands
+        self.execute_command = client.execute_command
+
+        if get_protocol_version(self.client) in ["3", 3]:
+            _MODULE_CALLBACKS.update(_RESP3_MODULE_CALLBACKS)
+        else:
+            _MODULE_CALLBACKS.update(_RESP2_MODULE_CALLBACKS)
+
+        for k, v in _MODULE_CALLBACKS.items():
+            self.client.set_response_callback(k, v)