Build real-time & multiplayer apps without a degree in distributed systems.

Ship multiplayer systems, chat services, session stores and other coordination-heavy apps using Durable Objects.

Stateful serverless

Durable Objects are stateful serverless functions: they run for as long as you need them, can compute in the background, and handle multiple requests concurrently.

WebSockets included

Every Durable Object is also a WebSocket server and client. Broadcast and coordinate state in real-time with just a few lines of code.

Like a micro-VM

Think of every Durable Object as a micro-VM: create thousands (or millions) of them to do work, and throw them away when you're done.

Embedded SQL database

Every Durable Object has a built-in, embedded SQLite database. Serverless doesn't have to be stateless.

Schedule Work

Every Durable Object can do work in the background, periodically poll an API, and programmatically execute code in the future with the Alarms API (it's built-in).

@cloudflare/actors

The @cloudflare/actors library provides a set of powerful abstractions over Durable Objects: the container to Durable Object's micro-VM.

Durable Objects

The building block for real-time apps

Power chat rooms, multiplayer sessions, collaborative docs, and live dashboards. Durable Objects run close to users, maintain consistent state, and broadcast updates instantly – no Redis clusters or orchestration required.

Build chat systems and messaging apps

One object per chat room handles all messages, user presence, and room state with global consistency. No Redis clusters or message queues required. Try it!