Key-value stores - Docs by LangChain

Our new LangChain Academy Course Deep Research with LangGraph is now live! Enroll for free.

On this page

All key-value stores

Key-value stores are used by other LangChain components to store and retrieve data.

All key-value stores

Cassandra KV

File System Store

InMemory Store

IORedis

Upstash Redis

Vercel KV

LLMs Document transformers