(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/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