| Name | Type | Description |
|---|---|---|
distance_threshold | float | Default: 0.2Maximum distance for semantic matches. |
ttl | Optional[int] | Default: NoneCache TTL in seconds. If None, entries do not expire. |
name | Optional[str] | Default: _DEFAULT_CACHE_NAME |
server_url | Optional[str] | Default: None |
api_key | Optional[str] | Default: None |
cache_id | Optional[str] | Default: None |
use_exact_search | bool | Default: True |
use_semantic_search | bool | Default: True |
distance_scale | Literal['normalized', 'redis'] | Default: 'normalized' |
**kwargs | Any | Default: {} |
Managed LangCache-backed semantic cache.
This uses redisvl.extensions.cache.llm.LangCacheSemanticCache (a wrapper
over the managed LangCache API). The optional dependency langcache must
be installed at runtime when this class is used. Install with either
pip install 'langchain-redis[langcache]' or
pip install langcache.
Example:
.. code-block:: python
from langchain_redis import LangCacheSemanticCache
cache = LangCacheSemanticCache( cache_id="your-cache-id", api_key="your-api-key", name="mycache", ttl=3600, )
Notes:
Cache name used by LangCache. Defaults to "llmcache".
LangCache API endpoint. If not set, a default managed endpoint is used; prefer the server URL provided for your cache.
API key for LangCache authentication.
Required LangCache instance identifier.
Enable exact match search. Defaults to True.
Enable semantic search. Defaults to True.
Distance scaling mode.
Additional options forwarded to the LangCache wrapper.
