AsyncRedisCache#

class langchain_community.cache.AsyncRedisCache(redis_: Any, *, ttl: int | None = None)[source]#

Cache that uses Redis as a backend. Allows to use an async redis.asyncio.Redis client.

Initialize an instance of AsyncRedisCache.

This method initializes an object with Redis caching capabilities. It takes a redis_ parameter, which should be an instance of a Redis client class (redis.asyncio.Redis), allowing the object to interact with a Redis server for caching purposes.

Parameters:

  • redis (Any) – An instance of a Redis client class (redis.asyncio.Redis) to be used for caching. This allows the object to communicate with a Redis server for caching operations.

  • ttl (int, optional) – Time-to-live (TTL) for cached items in seconds. If provided, it sets the time duration for how long cached items will remain valid. If not provided, cached items will not have an automatic expiration.

  • redis_ (Any)

Methods

__init__(redis_, *[, ttl])

Initialize an instance of AsyncRedisCache.

aclear(**kwargs)

Clear cache.

alookup(prompt, llm_string)

Look up based on prompt and llm_string.

aupdate(prompt, llm_string, return_val)

Update cache based on prompt and llm_string.

clear(**kwargs)

Clear cache.

lookup(prompt, llm_string)

Look up based on prompt and llm_string.

update(prompt, llm_string, return_val)

Update cache based on prompt and llm_string.
__init__(redis_: Any, *, ttl: int | None = None)[source]#

Initialize an instance of AsyncRedisCache.

This method initializes an object with Redis caching capabilities. It takes a redis_ parameter, which should be an instance of a Redis client class (redis.asyncio.Redis), allowing the object to interact with a Redis server for caching purposes.

Parameters:

  • redis (Any) – An instance of a Redis client class (redis.asyncio.Redis) to be used for caching. This allows the object to communicate with a Redis server for caching operations.

  • ttl (int, optional) – Time-to-live (TTL) for cached items in seconds. If provided, it sets the time duration for how long cached items will remain valid. If not provided, cached items will not have an automatic expiration.

  • redis_ (Any)

async aclear(**kwargs: Any) → None[source]#

Clear cache. If asynchronous is True, flush asynchronously. Async version.

Parameters:

kwargs (Any)

Return type:

None

async alookup(prompt: str, llm_string: str) → Sequence[Generation] | None[source]#

Look up based on prompt and llm_string. Async version.

Parameters:

  • prompt (str)

  • llm_string (str)

Return type:

Sequence[Generation] | None

async aupdate(prompt: str, llm_string: str, return_val: Sequence[Generation]) → None[source]#

Update cache based on prompt and llm_string. Async version.

Parameters:

  • prompt (str)

  • llm_string (str)

  • return_val (Sequence[Generation])

Return type:

None

clear(**kwargs: Any) → None[source]#

Clear cache. If asynchronous is True, flush asynchronously.

Parameters:

kwargs (Any)

Return type:

None

lookup(prompt: str, llm_string: str) → Sequence[Generation] | None[source]#

Look up based on prompt and llm_string.

Parameters:

  • prompt (str)

  • llm_string (str)

Return type:

Sequence[Generation] | None

update(prompt: str, llm_string: str, return_val: Sequence[Generation]) → None[source]#

Update cache based on prompt and llm_string.

Parameters:

  • prompt (str)

  • llm_string (str)

  • return_val (Sequence[Generation])

Return type:

None

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