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Cloudflare Durable Objects
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Master Durable Objects for real-time collaboration, WebSocket sessions, transactional state, and distributed coordination without managing servers.
Vad är Cloudflare Durable Objects
Cloudflare Durable Objects are serverless actors that maintain persistent state while coordinating requests globally. Unlike stateless Workers (which respond to individual requests), Durable Objects hold a single in-memory state instance, persist to disk, and route requests to the same instance across the globe. Ideal for real-time collaboration, sessions, and transactional workflows. Key concepts:
🔧 VERKTYG & EKOSYSTEM
Wrangler CLICloudflare WorkersDurable Objects storage APIWebSocket APISessions and rate limitingTransactionDB alternativeD1 Database integrationHono framework with DO
📋 Innan du börjar
💰 Lön per region
| Område | Nybörjare | Mid | Erfaren |
|---|---|---|---|
| USA | — | — | — |
| UK | — | — | — |
| EU | — | — | — |
🎓 Certifieringar
Cloudflare Fundamentals (free)
No official Durable Objects certification
❓ Vanliga frågor
What problem do Durable Objects solve?
Serverless functions are stateless. For real-time collaboration (Figma-style), multi-user sessions, or coordinated state, you need statefulness. Durable Objects = stateful serverless actors.
How is this different from running a Node.js server?
No server to manage, scale infinitely, globally distributed, 30ms latency from edge, built-in persistence. Trade-off: learning curve, cost at scale, less control.
Cost comparison?
Free tier: 3 Durable Objects. Paid: $0.15/million requests + storage. For small apps cheaper than EC2. At scale (millions of requests) comparable to managed databases.
Job market?
~300 roles (small niche). Cloudflare ecosystem specialists. Emerging technology; early adopters command premium ($150–220k).
Can I use with frontend frameworks?
Yes. Hono framework (Express-like) has native Durable Object support. Next.js, Remix integrations via Workers.
Alternatives?
Redis (caching only, not events), Firebase Realtime (locked to Google), PubSub platforms (Kafka, but more ops).
Salary ceiling?
Senior engineer with Durable Object expertise = $180–250k.
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