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Durable Objects
Overview
Get started
Walkthrough
Tutorial with SQL API
Video series
Overview
Introduction
What are Durable Objects?
Create a Serverless Websocket 'Backend'
Real-time messaging with WebSockets
Building the App Frontend and UI
Make and Answer WebRTC calls
Deploy your Video Call app
Best practices
Invoking methods
Access Durable Objects Storage
Error handling
Runtime APIs
Durable Object Namespace
Durable Object ID
Durable Object Stub
Durable Object State
Storage API
WebSockets
Alarms
WebGPU
Rust API ↗
REST API ↗
API
Observability
Troubleshooting
Metrics and GraphQL analytics
Examples
Build a rate limiter
Build a counter
Build a WebSocket server
Build a WebSocket server with WebSocket Hibernation
Durable Object in-memory state
Testing with Durable Objects
Use the Alarms API
Use Workers KV from Durable Objects
Tutorials
Demos and architectures
Platform
Pricing
Limits
Choose a data or storage product ↗
Known issues
Reference
In-memory state in a Durable Object
Durable Objects migrations
Durable Objects with WebSockets
Data security
Data location
Environments
Gradual Deployments ↗
Glossary
Changelog
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Durable Objects
Best practices
Best practices
Invoking methods
Access Durable Objects Storage
Error handling
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