What problem does it solve? Building scalable server-side applications requires consistent patterns for API design, database access, caching, and error handling, and this Skill provides proven implementations that prevent common pitfalls like N+1 queries, missing rate limits, and inconsistent error responses. ## Core Features & Use Cases - API Design Patterns: Repository, service layer, and middleware patterns with TypeScript examples for structuring Express and Next.js API routes. - Database Optimization: Query optimization, N+1 prevention, transaction handling with Supabase, and connection-aware data access. - Infrastructure Patterns: Redis caching (cache-aside), JWT authentication, role-based access control, rate limiting, background job queues, and structured logging. - Use Case: When building a new REST endpoint, apply the included API endpoint checklist covering HTTP status codes, pagination (cursor vs offset), filtering, versioning, and standardized error response formats. ## Quick Start Use the backend-patterns skill to design a paginated, authenticated REST API endpoint with proper error handling for my Next.js application.
