nodejs-backend-patterns

Comprehensive guidance for building scalable, maintainable, and production-ready Node.js backend applications with modern frameworks, architectural patterns, and best practices. Basic Setup: Basic Setup: Structure: Controller Layer: Service Layer: Repository Layer: DI Container: See javascript-testing-patterns skill for comprehensive testing guidance. - Building REST APIs or GraphQL servers - Creating microservices with Node.js - Implementing authentication and authorization - Designing scalable backend architectures - Setting up middleware and error handling - Integrating databases (SQL and NoSQL) - Building real-time applications with WebSockets - Implementing background job processing - Use TypeScript : Type safety prevents runtime errors - Implement proper error handling : Use custom error classes - Validate input : Use libraries like Zod or Joi - Use environment variables : Never hardcode secrets - Implement logging : Use structured logging (Pino, Winston) - Add rate limiting : Prevent abuse - Use HTTPS : Always in production - Implement CORS properly : Don't use * in production - Use dependency injection : Easier testing and maintenance - Write tests : Unit, integration, and E2E tests - Handle graceful shutdown : Clean up resources - Use connection pooling : For databases - Implement health checks : For monitoring - Use compression : Reduce response size - Monitor...