Backend

A comprehensive guide to REST and GraphQL API design principles. Provides production-ready templates, design patterns for pagination, error handling, authentication, and schema organization, along with detailed checklists for pre-implementation review.

A comprehensive reference guide for building production-ready Node.js backend applications. Covers Express.js and Fastify frameworks, layered architecture, dependency injection, middleware patterns (authentication, validation, rate limiting), error handling, database integration (PostgreSQL, MongoDB), JWT authentication, caching with Redis, and API design best practices.

A comprehensive reference guide for Python asynchronous programming patterns using asyncio. Covers fundamental concepts like event loops, coroutines, and tasks, along with advanced patterns including producer-consumer queues, semaphores for rate limiting, and async context managers. Includes real-world examples for web scraping, database operations, and WebSocket servers.

This skill provides production-ready FastAPI project templates and architectural patterns. It includes comprehensive examples for async database operations with SQLAlchemy, JWT authentication, dependency injection, repository/service layers, and testing strategies for building high-performance Python APIs.