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https://github.com/hwchase17/langchain.git
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f92738a6f6
* This PR adds async methods to the LLM cache. * Adds an implementation using Redis called AsyncRedisCache. * Adds a docker compose file at the /docker to help spin up docker * Updates redis tests to use a context manager so flushing always happens by default
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
from __future__ import annotations
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from abc import ABC, abstractmethod
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from typing import Any, Optional, Sequence
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from langchain_core.outputs import Generation
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from langchain_core.runnables import run_in_executor
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RETURN_VAL_TYPE = Sequence[Generation]
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class BaseCache(ABC):
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"""Base interface for cache."""
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@abstractmethod
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def lookup(self, prompt: str, llm_string: str) -> Optional[RETURN_VAL_TYPE]:
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"""Look up based on prompt and llm_string."""
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@abstractmethod
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def update(self, prompt: str, llm_string: str, return_val: RETURN_VAL_TYPE) -> None:
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"""Update cache based on prompt and llm_string."""
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@abstractmethod
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def clear(self, **kwargs: Any) -> None:
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"""Clear cache that can take additional keyword arguments."""
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async def alookup(self, prompt: str, llm_string: str) -> Optional[RETURN_VAL_TYPE]:
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"""Look up based on prompt and llm_string."""
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return await run_in_executor(None, self.lookup, prompt, llm_string)
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async def aupdate(
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self, prompt: str, llm_string: str, return_val: RETURN_VAL_TYPE
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) -> None:
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"""Update cache based on prompt and llm_string."""
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return await run_in_executor(None, self.update, prompt, llm_string, return_val)
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async def aclear(self, **kwargs: Any) -> None:
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"""Clear cache that can take additional keyword arguments."""
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return await run_in_executor(None, self.clear, **kwargs)
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