Key-value stores

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

📄️ Key-value stores

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

📄️ Local Filesystem

The LocalFileStore is a persistent implementation of ByteStore that stores everything in a folder of your choosing.

📄️ Astra DB

DataStax Astra DB is a serverless vector-capable database built on Cassandra and made conveniently available through an easy-to-use JSON API.

📄️ Cassandra

Cassandra is a NoSQL, row-oriented, highly scalable and highly available database.

📄️ Elasticsearch

The ElasticsearchEmbeddingsCache is a ByteStore implementation that uses your Elasticsearch instance for efficient storage and retrieval of embeddings.

📄️ InMemoryByteStore

This guide will help you get started with in-memory key-value stores. For detailed documentation of all InMemoryByteStore features and configurations head to the API reference.

📄️ Redis

The RedisStore is an implementation of ByteStore that stores everything in your Redis instance.

📄️ Upstash Redis

The UpstashRedisStore is an implementation of ByteStore that stores everything in your Upstash-hosted Redis instance.