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Memcached

Memcached 是一个免费且开源的高性能分布式内存对象缓存系统, 其性质通用,但旨在通过减轻数据库负载来加速动态 Web 应用程序。

本文介绍如何使用 LangChain 与 Memcached 配合,通过 pymemcache 作为客户端连接到已运行的 Memcached 实例。

安装与设置

pip install pymemcache

LLM 缓存

要将 Memcached 缓存集成到您的应用程序中:

from langchain.globals import set_llm_cache
from langchain_openai import OpenAI

from langchain_community.cache import MemcachedCache
from pymemcache.client.base import Client

llm = OpenAI(model="gpt-3.5-turbo-instruct", n=2, best_of=2)
set_llm_cache(MemcachedCache(Client('localhost')))

# The first time, it is not yet in cache, so it should take longer
llm.invoke("Which city is the most crowded city in the USA?")

# The second time it is, so it goes faster
llm.invoke("Which city is the most crowded city in the USA?")

示例笔记本 中了解更多