URL Shortener Service

Build a URL shortener — generate short codes, redirect to original URLs, track click analytics, and enforce rate limits per IP. Compact project, dense backend concepts.

You will learn to:

• Build a URL shortening service with unique code generation
• Implement Redis caching to reduce database load on hot lookup paths
• Track analytics data (click counts) without slowing down the critical path
• Apply per-IP rate limiting using Redis counters and TTLs
• Return correct HTTP status codes: 301, 404, 429