全スキル
Cloudflare Durable Objects
⬢ ティア 3テクニカル
高い
給与インパクト
6か月
習得までの期間
難しい
難易度
—
職種数
概要
Master Durable Objects for real-time collaboration, WebSocket sessions, transactional state, and distributed coordination without managing servers.
Cloudflare Durable Objectsとは
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:
🔧 ツール＆エコシステム
Wrangler CLICloudflare WorkersDurable Objects storage APIWebSocket APISessions and rate limitingTransactionDB alternativeD1 Database integrationHono framework with DO
📋 始める前に
💰 地域別給与
| 地域 | ジュニア | ミドル | シニア |
|---|---|---|---|
| USA | — | — | — |
| UK | — | — | — |
| EU | — | — | — |
🎓 認定資格
Cloudflare Fundamentals (free)
No official Durable Objects certification
❓ よくある質問
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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