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Editor's pickBuild a Node.js URL shortener with PostgreSQL, secure short codes, redirects, click tracking, rate limits, and practical abuse-prevention guidance.
Build a Node.js URL shortener with Express and SQLite. Learn short-code generation, redirects, click analytics, rate limiting, and abuse prevention.
Learn to trace untrusted redirect parameters in JavaScript, reproduce the issue locally, and prevent open redirects with exact allowlists.
Learn to configure Node.js API rate limiting with express-rate-limit, return 429 responses, set headers, trust proxies safely, and scale across instances.
Fix CORS errors between Next.js and Express with exact origin settings, preflight handling, allowed headers, and credentialed request examples.
Learn to build a Node.js URL shortener with unique codes, Express redirects, SQLite click tracking, rate limits, and practical abuse-prevention guidance.