For a storage backend you can use the IPFS Datastore Chat Memory to wrap an IPFS Datastore allowing you to use any IPFS compatible datastore.

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Setup

First, install the integration dependencies:
See this section for general instructions on installing integration packages.
npm
npm install cborg interface-datastore it-all @langchain/community @langchain/core
Now you can install and use an IPFS Datastore of your choice. Here are some options:

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Usage

// Replace FsDatastore with the IPFS Datastore of your choice.
import { FsDatastore } from "datastore-fs";
import { IPFSDatastoreChatMessageHistory } from "@langchain/community/stores/message/ipfs_datastore";

const datastore = new FsDatastore("path/to/store");
const sessionId = "my-session";

const history = new IPFSDatastoreChatMessageHistory({ datastore, sessionId });