Install and import from "@langchain/cloudflare" instead.

Class for storing and retrieving chat message history from a Cloudflare D1 database. Extends the BaseListChatMessageHistory class.

const memory = new BufferMemory({
returnMessages: true,
chatHistory: new CloudflareD1MessageHistory({
tableName: "stored_message",
sessionId: "example",
database: env.DB,
}),
});

const chainInput = { input };

const res = await memory.chatHistory.invoke(chainInput);
await memory.saveContext(chainInput, {
output: res,
});

Hierarchy (view full)

Constructors

Properties

Methods

Constructors

Properties

database: D1Database

Methods

  • Method to add a new message to the Cloudflare D1 database for the current session.

    Parameters

    • message: BaseMessage

      The BaseMessage object to be added to the database.

    Returns Promise<void>

    Promise that resolves to void.

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