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MongoDB

MongoDB is a source-available cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas.

MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License (SSPL). - Wikipedia

This notebook goes over how to use Mongodb to store chat message history.

Setting up​

!pip install pymongo
# Provide the connection string to connect to the MongoDB database
connection_string = "mongodb://mongo_user:password123@mongo:27017"

Example​

from langchain.memory import MongoDBChatMessageHistory

message_history = MongoDBChatMessageHistory(
    connection_string=connection_string, session_id="test-session"
)

message_history.add_user_message("hi!")

message_history.add_ai_message("whats up?")
message_history.messages
[HumanMessage(content='hi!', additional_kwargs={}, example=False),
 AIMessage(content='whats up?', additional_kwargs={}, example=False)]