LangGraph is a popular framework for building stateful AI agents, but its default InMemoryStore loses all data when the application restarts. This tutorial shows how to swap in SQLite as a lightweight file-based storage backend, enabling durable memory of user preferences and conversation context. The approach is straightforward: configure LangGraph's store to use SQLite instead of memory, then read and write state as usual. This pattern is essential for production AI assistants that need to remember users across sessions. While the tutorial is basic, it highlights a common pain point and offers a practical solution that developers can adapt to other storage systems like PostgreSQL or Redis.
Learn how to add persistent memory to LangGraph apps using SQLite, so user preferences survive restarts.