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litellm/litellm/caching
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devin-ai-integration[bot] db3338b206
feat(proxy): make the in-memory management cache capacity configurable (#40725) 
* feat(proxy): make the in-memory management cache capacity configurable

Add general_settings.user_api_key_cache_max_size (positive int, default 200) to resize the
in-memory tier of the shared user_api_key_cache at startup and on DB config reloads, expose it
in the Admin UI general settings, and cover it with behavioral tests. Prior art: #34726

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* fix(caching): resize the in-memory tier from DualCache so any cache instance honours the cap

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* style(proxy): wrap the cache capacity field description to the 120 col limit

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

---------

Co-authored-by: yassin <yassin@berri.ai>
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-09-11 09:55:30 -07:00
..
__init__.py refactor(lint): apply every safe ruff autofix and zero 28 strict-rule budgets 2026-08-01 15:43:29 -07:00
_embedding_router.py fix(caching): bound the semantic cache embedding lookup 2026-08-20 16:09:30 -07:00
_internal_lru_cache.py feat(lint): enforce Final on locals and freeze function parameters (LIT010, LIT011) 2026-08-04 12:54:39 -07:00
azure_blob_cache.py feat(lint): enforce Final on locals and freeze function parameters (LIT010, LIT011) 2026-08-04 12:54:39 -07:00
base_cache.py chore(lint): clear grandfathered over-limit lint drift and ratchet budgets down 2026-08-05 12:18:13 -07:00
caching.py fix(redis): log an open circuit breaker once instead of a traceback per request and count sync timeouts as timeouts 2026-09-10 13:50:34 -07:00
caching_handler.py feat(proxy): offload spend tracking to a pod-local collector sidecar (#40545) 2026-09-10 17:14:13 -07:00
disk_cache.py chore(lint): clear grandfathered over-limit lint drift and ratchet budgets down 2026-08-05 12:18:13 -07:00
dual_cache.py feat(proxy): make the in-memory management cache capacity configurable (#40725) 2026-09-11 09:55:30 -07:00
evicted_client_closer.py fix(caching): clear strict-lint budget breaches in re-landed closer code 2026-08-05 11:08:19 -07:00
gcs_cache.py feat(lint): enforce Final on locals and freeze function parameters (LIT010, LIT011) 2026-08-04 12:54:39 -07:00
in_memory_cache.py feat(proxy): make the in-memory management cache capacity configurable (#40725) 2026-09-11 09:55:30 -07:00
llm_caching_handler.py fix(caching): clear strict-lint budget breaches in re-landed closer code 2026-08-05 11:08:19 -07:00
qdrant_semantic_cache.py refactor(types): replace Any with precise types across 73 modules 2026-09-01 11:05:02 +00:00
Readme.md add azure blob cache support (#12587) 2025-07-15 11:47:38 -07:00
redis_cache.py fix(caching): let a Redis breaker success count only for the state that admitted the call 2026-09-10 18:57:24 -07:00
redis_cluster_cache.py fix(redis): support credential providers across clients 2026-08-24 19:07:13 -04:00
redis_cluster_node_isolation.py fix(caching): keep a node timeout from forcing a cluster-wide topology reinit on redis-py 8.x (#39349) 2026-09-03 17:31:58 -07:00
redis_semantic_cache.py refactor(typing): replace Any with proven types in 65 backend files 2026-09-02 09:11:36 +00:00
s3_cache.py chore(lint): strip inert type: ignore comments and zero LIT009, LIT010, LIT011 headroom 2026-08-05 02:37:24 -07:00
valkey_semantic_cache.py chore(lint): fix post-merge type regressions and ratchet lint budgets 2026-08-29 20:16:04 +00:00

Readme.md

Caching on LiteLLM

LiteLLM supports multiple caching mechanisms. This allows users to choose the most suitable caching solution for their use case.

The following caching mechanisms are supported:

  1. RedisCache
  2. RedisSemanticCache
  3. QdrantSemanticCache
  4. InMemoryCache
  5. DiskCache
  6. S3Cache
  7. AzureBlobCache
  8. DualCache (updates both Redis and an in-memory cache simultaneously)

Folder Structure

litellm/caching/
├── base_cache.py
├── caching.py
├── caching_handler.py
├── disk_cache.py
├── dual_cache.py
├── in_memory_cache.py
├── qdrant_semantic_cache.py
├── redis_cache.py
├── redis_semantic_cache.py
├── s3_cache.py

Documentation