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SQLite Advanced

⬢ 層級 2技術
中等
薪資影響
4 個月
學習時長
中等
難度
1
職業
一覽

SQLite is a lightweight, file-based SQL database used in mobile apps, embedded systems, and edge computing. Advanced skills include query optimization, replication (rqlite, Litestream), full-text search, JSON querying, and production deployments (Cloudflare D1, Vercel Postgres). Learnable in 4–6 weeks with SQL fundamentals. Increasingly critical for serverless, edge, and offline-first architectures. Sits alongside PostgreSQL, cloud databases, and Wasm.

什麼是 SQLite Advanced

SQLite is a lightweight, file-based relational database used in mobile apps, embedded systems, edge computing, and serverless environments. Unlike PostgreSQL or MySQL, SQLite requires no server process, you call it as a library from your application. Advanced SQLite usage involves optimizing queries (indices, EXPLAIN QUERY PLAN), enabling extensions (full-text search FTS5, JSON support), tuning performance with pragmas (WAL mode, cache size), implementing replication (Litestream, rqlite), and deploying to edge networks (Cloudflare D1, Vercel Postgres serverless). SQLite is the most widely deployed database engine in the world, every iOS device, every Android phone, and most web browsers contain SQLite.

🔧 工具與生態
SQLite CLISQLite ExtensionsFull-Text Search FTS5JSON SupportPRAGMA TuningWAL ModeReplication LitestreamCloudflare D1

💰 各地區薪資

地區初級中級高級
USA$75,000$115,000$160,000
UK£45,000£70,000£105,000
EU€50,000€75,000€115,000
CANADACA$70,000CA$105,000CA$150,000

🎯 使用 SQLite Advanced 的職業

Mobile Developer

❓ 常見問題

Is SQLite suitable for production?
Yes, for specific use cases: single-machine databases, read-heavy workloads, embedded systems, edge computing. Not suitable for high-concurrency (many writers).
Can SQLite scale to millions of rows?
Yes. SQLite performs well on tables with billions of rows if queries are optimized (indices, proper JOINs). Concurrency is the bottleneck, not data size.
How is SQLite different from PostgreSQL?
SQLite is serverless, file-based, perfect for mobile/embedded. PostgreSQL is a server, supports concurrent writers, better for multi-user OLTP. Different use cases.
What's WAL mode and should I use it?
Write-Ahead Logging (WAL) improves concurrency, readers don't block writers. Enable it for production: `PRAGMA journal_mode=WAL;`
Can I replicate SQLite?
SQLite itself doesn't replicate. Use Litestream (backup to S3 periodically), rqlite (Raft-based replication), or cloud solutions (Cloudflare D1).

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