Fastify

A comprehensive reference skill for building production-ready Node.js backend applications. It provides architectural patterns, code templates, and best practices for Express.js and Fastify frameworks, covering authentication, database integration, middleware, error handling, and caching strategies.

A comprehensive guide for building Node.js backend applications using Express or Fastify. It covers project structure, API design with dependency injection, error handling patterns, database repositories with transactions, configuration management, and testing strategies for both unit and integration tests.