langchain-astradb

This package contains the LangChain integrations for using DataStax Astra DB.

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

Note. For a short transitional period, only some of the Astra DB integration classes are contained in this package (the remaining ones being still in langchain-community). In a short while, and surely by version 0.2 of LangChain, all of the Astra DB support will be removed from langchain-community and included in this package.

Installation and Setup

Installation of this partner package:

pip install langchain-astradb

Integrations overview

Vector Store

from langchain_astradb import AstraDBVectorStore

my_store = AstraDBVectorStore(
  embedding=my_embeddings,
  collection_name="my_store",
  api_endpoint="https://...",
  token="AstraCS:...",
)

Chat message history

from langchain_astradb import AstraDBChatMessageHistory
message_history = AstraDBChatMessageHistory(
    session_id="test-session",
    api_endpoint="...",
    token="...",
)

Store

from langchain_astradb import AstraDBStore
store = AstraDBStore(
    collection_name="my_kv_store",
    api_endpoint="...",
    token="..."
)

Byte Store

from langchain_astradb import AstraDBByteStore
store = AstraDBByteStore(
    collection_name="my_kv_store",
    api_endpoint="...",
    token="..."
)

Reference

See the LangChain docs page for a more detailed listing.