Cc Skill Backend Patterns

A solid reference for backend patterns you'll actually use in production. Covers the essentials like repository and service layer separation, REST API conventions, N+1 query prevention, and caching strategies with Redis. The middleware examples for auth and the transaction patterns for Supabase are immediately useful. What I appreciate is the side-by-side good/bad comparisons, especially for query optimization and error handling. It's focused on Node.js, Express, and Next.js API routes, so if you're in that ecosystem and want to avoid common pitfalls or set up a maintainable architecture, this gives you working patterns to copy and adapt.