cloudflare-durable-objects

Use Cloudflare Durable Objects to create stateful WebSocket servers that maintain consistent state across hibernation cycles. Durable Objects provide coordinated real-time communication with built-in storage (SQLite or KV) for session and message persistence, eliminating manual state synchronization.

Yes. Durable Objects excel at real-time coordination for multiplayer games, chat rooms, and collaborative applications. Each DO instance acts as a single source of truth, handling WebSocket connections, enforcing atomic operations, and managing game state or document mutations reliably.

Durable Objects support idempotent retry strategies, migrations, and error handling patterns built into the RPC and fetch execution model. Use SQLite transactions and KV atomic operations to ensure state consistency, and implement proper alarm and hibernation logic to recover from failures gracefully.

Durable Objects support both SQLite for structured, relational state and KV storage for simple key-value persistence. Choose SQLite for complex state requiring transactions and queries, or KV for lightweight, fast state access depending on your application's storage needs.

Export your DO class with proper module syntax and configuration for Cloudflare Workers. The Skill provides ready-to-deploy templates that handle correct class definitions, RPC patterns, fetch handlers, and Worker bindings so your stateful application deploys without common export or binding errors.

Use Durable Objects for real-time, low-latency coordination requiring immediate state consistency and WebSocket integration. Traditional databases suit offline-first or high-volume analytics; Durable Objects optimize for live sessions, active users, and stateful request handling at edge scale.