Source code for langchain_core.caches
from __future__ import annotations
from abc import ABC, abstractmethod
from typing import Any, Optional, Sequence
from langchain_core.outputs import Generation
RETURN_VAL_TYPE = Sequence[Generation]
[docs]class BaseCache(ABC):
"""Base interface for cache."""
[docs] @abstractmethod
def lookup(self, prompt: str, llm_string: str) -> Optional[RETURN_VAL_TYPE]:
"""Look up based on prompt and llm_string."""
[docs] @abstractmethod
def update(self, prompt: str, llm_string: str, return_val: RETURN_VAL_TYPE) -> None:
"""Update cache based on prompt and llm_string."""
[docs] @abstractmethod
def clear(self, **kwargs: Any) -> None:
"""Clear cache that can take additional keyword arguments."""