(Redis Cluster) - Fixes for using redis cluster + pipeline (#8442)

* update RedisCluster creation

* update RedisClusterCache

* add redis ClusterCache

* update async_set_cache_pipeline

* cleanup redis cluster usage

* fix redis pipeline

* test_init_async_client_returns_same_instance

* fix redis cluster

* update mypy_path

* fix init_redis_cluster

* remove stub

* test redis commit

* ClusterPipeline

* fix import

* RedisCluster import

* fix redis cluster

* Potential fix for code scanning alert no. 2129: Clear-text logging of sensitive information

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* fix naming of redis cluster integration

* test_redis_caching_ttl_pipeline

* fix async_set_cache_pipeline

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

litellm/_redis.py

@@ -183,7 +183,7 @@ def init_redis_cluster(redis_kwargs) -> redis.RedisCluster:
             )
 
     verbose_logger.debug(
-        "init_redis_cluster: startup nodes: ", redis_kwargs["startup_nodes"]
+        "init_redis_cluster: startup nodes are being initialized."
     )
     from redis.cluster import ClusterNode
 
@@ -266,7 +266,9 @@ def get_redis_client(**env_overrides):
     return redis.Redis(**redis_kwargs)
 
 
-def get_redis_async_client(**env_overrides) -> async_redis.Redis:
+def get_redis_async_client(
+    **env_overrides,
+) -> async_redis.Redis:
     redis_kwargs = _get_redis_client_logic(**env_overrides)
     if "url" in redis_kwargs and redis_kwargs["url"] is not None:
         args = _get_redis_url_kwargs(client=async_redis.Redis.from_url)

litellm/caching/__init__.py

@@ -4,5 +4,6 @@ from .dual_cache import DualCache
 from .in_memory_cache import InMemoryCache
 from .qdrant_semantic_cache import QdrantSemanticCache
 from .redis_cache import RedisCache
+from .redis_cluster_cache import RedisClusterCache
 from .redis_semantic_cache import RedisSemanticCache
 from .s3_cache import S3Cache

litellm/caching/caching.py

@@ -41,6 +41,7 @@ from .dual_cache import DualCache  # noqa
 from .in_memory_cache import InMemoryCache
 from .qdrant_semantic_cache import QdrantSemanticCache
 from .redis_cache import RedisCache
+from .redis_cluster_cache import RedisClusterCache
 from .redis_semantic_cache import RedisSemanticCache
 from .s3_cache import S3Cache
 
@@ -158,14 +159,23 @@ class Cache:
             None. Cache is set as a litellm param
         """
         if type == LiteLLMCacheType.REDIS:
-            self.cache: BaseCache = RedisCache(
+            if redis_startup_nodes:
-                host=host,
+                self.cache: BaseCache = RedisClusterCache(
-                port=port,
+                    host=host,
-                password=password,
+                    port=port,
-                redis_flush_size=redis_flush_size,
+                    password=password,
-                startup_nodes=redis_startup_nodes,
+                    redis_flush_size=redis_flush_size,
-                **kwargs,
+                    startup_nodes=redis_startup_nodes,
-            )
+                    **kwargs,
+                )
+            else:
+                self.cache = RedisCache(
+                    host=host,
+                    port=port,
+                    password=password,
+                    redis_flush_size=redis_flush_size,
+                    **kwargs,
+                )
         elif type == LiteLLMCacheType.REDIS_SEMANTIC:
             self.cache = RedisSemanticCache(
                 host=host,

litellm/caching/redis_cache.py

@@ -14,7 +14,7 @@ import inspect
 import json
 import time
 from datetime import timedelta
-from typing import TYPE_CHECKING, Any, List, Optional, Tuple
+from typing import TYPE_CHECKING, Any, List, Optional, Tuple, Union
 
 import litellm
 from litellm._logging import print_verbose, verbose_logger
@@ -26,15 +26,20 @@ from .base_cache import BaseCache
 
 if TYPE_CHECKING:
     from opentelemetry.trace import Span as _Span
-    from redis.asyncio import Redis
+    from redis.asyncio import Redis, RedisCluster
     from redis.asyncio.client import Pipeline
+    from redis.asyncio.cluster import ClusterPipeline
 
     pipeline = Pipeline
+    cluster_pipeline = ClusterPipeline
     async_redis_client = Redis
+    async_redis_cluster_client = RedisCluster
     Span = _Span
 else:
     pipeline = Any
+    cluster_pipeline = Any
     async_redis_client = Any
+    async_redis_cluster_client = Any
     Span = Any
 
 
@@ -122,7 +127,9 @@ class RedisCache(BaseCache):
         else:
             super().__init__()  # defaults to 60s
 
-    def init_async_client(self):
+    def init_async_client(
+        self,
+    ) -> Union[async_redis_client, async_redis_cluster_client]:
         from .._redis import get_redis_async_client
 
         return get_redis_async_client(
@@ -345,8 +352,14 @@ class RedisCache(BaseCache):
                 )
 
     async def _pipeline_helper(
-        self, pipe: pipeline, cache_list: List[Tuple[Any, Any]], ttl: Optional[float]
+        self,
+        pipe: Union[pipeline, cluster_pipeline],
+        cache_list: List[Tuple[Any, Any]],
+        ttl: Optional[float],
     ) -> List:
+        """
+        Helper function for executing a pipeline of set operations on Redis
+        """
         ttl = self.get_ttl(ttl=ttl)
         # Iterate through each key-value pair in the cache_list and set them in the pipeline.
         for cache_key, cache_value in cache_list:
@@ -359,7 +372,11 @@ class RedisCache(BaseCache):
             _td: Optional[timedelta] = None
             if ttl is not None:
                 _td = timedelta(seconds=ttl)
-            pipe.set(cache_key, json_cache_value, ex=_td)
+            pipe.set(  # type: ignore
+                name=cache_key,
+                value=json_cache_value,
+                ex=_td,
+            )
         # Execute the pipeline and return the results.
         results = await pipe.execute()
         return results
@@ -373,9 +390,8 @@ class RedisCache(BaseCache):
         # don't waste a network request if there's nothing to set
         if len(cache_list) == 0:
             return
-        from redis.asyncio import Redis
 
-        _redis_client: Redis = self.init_async_client()  # type: ignore
+        _redis_client = self.init_async_client()
         start_time = time.time()
 
         print_verbose(
@@ -384,7 +400,7 @@ class RedisCache(BaseCache):
         cache_value: Any = None
         try:
             async with _redis_client as redis_client:
-                async with redis_client.pipeline(transaction=True) as pipe:
+                async with redis_client.pipeline(transaction=False) as pipe:
                     results = await self._pipeline_helper(pipe, cache_list, ttl)
 
             print_verbose(f"pipeline results: {results}")
@@ -730,7 +746,8 @@ class RedisCache(BaseCache):
         """
         Use Redis for bulk read operations
         """
-        _redis_client = await self.init_async_client()
+        # typed as Any, redis python lib has incomplete type stubs for RedisCluster and does not include `mget`
+        _redis_client: Any = self.init_async_client()
         key_value_dict = {}
         start_time = time.time()
         try:
@@ -822,7 +839,8 @@ class RedisCache(BaseCache):
             raise e
 
     async def ping(self) -> bool:
-        _redis_client = self.init_async_client()
+        # typed as Any, redis python lib has incomplete type stubs for RedisCluster and does not include `ping`
+        _redis_client: Any = self.init_async_client()
         start_time = time.time()
         async with _redis_client as redis_client:
             print_verbose("Pinging Async Redis Cache")
@@ -858,7 +876,8 @@ class RedisCache(BaseCache):
                 raise e
 
     async def delete_cache_keys(self, keys):
-        _redis_client = self.init_async_client()
+        # typed as Any, redis python lib has incomplete type stubs for RedisCluster and does not include `delete`
+        _redis_client: Any = self.init_async_client()
         # keys is a list, unpack it so it gets passed as individual elements to delete
         async with _redis_client as redis_client:
             await redis_client.delete(*keys)
@@ -881,7 +900,8 @@ class RedisCache(BaseCache):
         await self.async_redis_conn_pool.disconnect(inuse_connections=True)
 
     async def async_delete_cache(self, key: str):
-        _redis_client = self.init_async_client()
+        # typed as Any, redis python lib has incomplete type stubs for RedisCluster and does not include `delete`
+        _redis_client: Any = self.init_async_client()
         # keys is str
         async with _redis_client as redis_client:
             await redis_client.delete(key)
@@ -936,7 +956,7 @@ class RedisCache(BaseCache):
 
         try:
             async with _redis_client as redis_client:
-                async with redis_client.pipeline(transaction=True) as pipe:
+                async with redis_client.pipeline(transaction=False) as pipe:
                     results = await self._pipeline_increment_helper(
                         pipe, increment_list
                     )
@@ -991,7 +1011,8 @@ class RedisCache(BaseCache):
         Redis ref: https://redis.io/docs/latest/commands/ttl/
         """
         try:
-            _redis_client = await self.init_async_client()
+            # typed as Any, redis python lib has incomplete type stubs for RedisCluster and does not include `ttl`
+            _redis_client: Any = self.init_async_client()
             async with _redis_client as redis_client:
                 ttl = await redis_client.ttl(key)
                 if ttl <= -1:  # -1 means the key does not exist, -2 key does not exist

litellm/caching/redis_cluster_cache.py

@@ -0,0 +1,44 @@
+"""
+Redis Cluster Cache implementation
+
+Key differences:
+- RedisClient NEEDs to be re-used across requests, adds 3000ms latency if it's re-created
+"""
+
+from typing import TYPE_CHECKING, Any, Optional
+
+from litellm.caching.redis_cache import RedisCache
+
+if TYPE_CHECKING:
+    from opentelemetry.trace import Span as _Span
+    from redis.asyncio import Redis, RedisCluster
+    from redis.asyncio.client import Pipeline
+
+    pipeline = Pipeline
+    async_redis_client = Redis
+    Span = _Span
+else:
+    pipeline = Any
+    async_redis_client = Any
+    Span = Any
+
+
+class RedisClusterCache(RedisCache):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.redis_cluster_client: Optional[RedisCluster] = None
+
+    def init_async_client(self):
+        from redis.asyncio import RedisCluster
+
+        from .._redis import get_redis_async_client
+
+        if self.redis_cluster_client:
+            return self.redis_cluster_client
+
+        _redis_client = get_redis_async_client(
+            connection_pool=self.async_redis_conn_pool, **self.redis_kwargs
+        )
+        if isinstance(_redis_client, RedisCluster):
+            self.redis_cluster_client = _redis_client
+        return _redis_client

mypy.ini

@@ -1,6 +1,7 @@
 [mypy]
 warn_return_any = False
 ignore_missing_imports = True
+mypy_path = litellm/stubs
 
 [mypy-google.*]
 ignore_missing_imports = True

tests/local_testing/test_caching.py

@@ -21,7 +21,8 @@ import pytest
 import litellm
 from litellm import aembedding, completion, embedding
 from litellm.caching.caching import Cache
-
+from redis.asyncio import RedisCluster
+from litellm.caching.redis_cluster_cache import RedisClusterCache
 from unittest.mock import AsyncMock, patch, MagicMock, call
 import datetime
 from datetime import timedelta
@@ -2328,8 +2329,12 @@ async def test_redis_caching_ttl_pipeline():
         # Verify that the set method was called on the mock Redis instance
         mock_set.assert_has_calls(
             [
-                call.set("test_key1", '"test_value1"', ex=expected_timedelta),
+                call.set(
-                call.set("test_key2", '"test_value2"', ex=expected_timedelta),
+                    name="test_key1", value='"test_value1"', ex=expected_timedelta
+                ),
+                call.set(
+                    name="test_key2", value='"test_value2"', ex=expected_timedelta
+                ),
             ]
         )
 
@@ -2388,6 +2393,7 @@ async def test_redis_increment_pipeline():
         from litellm.caching.redis_cache import RedisCache
 
         litellm.set_verbose = True
+        litellm._turn_on_debug()
         redis_cache = RedisCache(
             host=os.environ["REDIS_HOST"],
             port=os.environ["REDIS_PORT"],