durable-objects

Durable Objects provide per-entity storage and deterministic routing to object instances, ensuring consistent state across distributed edge requests. Each object encapsulates coordination logic for specific entities like chat rooms, game sessions, or user sessions.

Yes, Durable Objects support SQLite-backed storage, WebSocket interactions, and RPC methods to enable scalable, reliable edge applications. These features allow real-time communication and persistent state management directly at the edge.

You test Durable Objects with Vitest to ensure deterministic, resilient operation of your edge-coordinated stateful apps. This testing approach validates RPC methods, alarms, and WebSocket interactions within a controlled TypeScript environment.

Implementing Durable Objects requires TypeScript environments, wrangler bindings for deployment, SQLite-backed storage for state, and Vitest for testing. You define a Durable Object class, bind it in wrangler, and deploy to the edge.

Use Durable Objects for per-entity coordination tasks like chat rooms, multiplayer game sessions, collaborative documents, or user sessions. They solve the challenge of maintaining consistent state across distributed edge requests.