Example application showing how to use a Langchain chain with a Cloudflare D1-driven memory store.

The relevant code can be found in worker.js. Note that the Langchain integration will instantiate a new table and manage it for you -- all you need to do is set up your own D1 database with relevant database_id, as seen in wrangler.toml:

$ npx wrangler d1 database create YOUR_DB_NAME

You will also need to pass in an OPENAI_API_KEY as a secret:

$ echo "API_KEY_HERE" | npx wrangler secret put OPENAI_API_KEY