全スキル
Cloudflare D1 Database
⬢ ティア 2テクニカル
普通
給与インパクト
3か月
習得までの期間
易しい
難易度
3
職種数
概要
Master Cloudflare D1 (managed SQLite at the edge), query APIs, replication, and integration with Cloudflare Workers to build serverless apps with local database semantics.
Cloudflare D1 Databaseとは
Cloudflare D1 is a managed SQLite database service, natively integrated with Cloudflare Workers. Instead of round-tripping to a centralized database server (Postgres on EC2), you query a local SQLite replica on the Cloudflare edge, dramatically reducing latency. D1 handles replication, backups, and schema migrations. Key features:
🔧 ツール＆エコシステム
Wrangler CLICloudflare DashboardSQLite CLICloudflare WorkersREST API bindingsDrizzle ORM / Prisma (D1 support)Migration toolsMonitoring dashboards
📋 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, optional)
No official D1 certification yet
🎯 Cloudflare D1 Databaseを使う職種
❓ よくある質問
Is D1 production-ready?
Yes as of 2024. SQLite at the edge; data stored on Cloudflare infrastructure. Free tier 1M rows, paid scales. Used by production apps. Still maturing; some limitations on transactions.
When D1 vs traditional Postgres?
D1 = simple apps, low-latency global reads, serverless developer experience. Postgres = complex queries, transactions, JSONB, replication. D1 if you're already on Workers; Postgres if you need relational complexity.
How global is replication?
D1 replicates to Cloudflare edge locations (200+). Your queries execute on nearest location. Not a true distributed database; eventual consistency in some write patterns.
Job market?
~500 roles (US, small but growing). Mostly Cloudflare ecosystem specialists. Easy entry if you know Workers. Less saturated than Postgres.
Can I migrate from Postgres?
Yes, but with caveats. D1 is SQLite (smaller feature set). Dump table definitions, migrate data, adjust app code for SQLite quirks.
Free tier enough?
1M rows, 100k reads/day, 100 writes/day. Good for MVP/hobby projects. Enterprise = pay-per-use.
Career path?
D1 specialist = niche. Better: D1 + Workers + Hono/Astro = full-stack edge developer ($120–180k).
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