nodejs-backend-patterns

Structure scalable Node.js backends using a layered architecture with controllers, services, repositories, models, middleware, routes, and config. This separation organizes REST APIs and microservices efficiently, reducing maintenance challenges and unstructured code.

Implement middleware patterns for authentication, validation, rate limiting, and logging to secure Node.js backends. These patterns intercept requests to verify credentials and control traffic flow across Express or Fastify REST APIs.

Global error handling in Node.js backends uses custom error classes and a global handler to catch exceptions uniformly. This mechanism prevents server crashes and ensures consistent error responses across REST APIs and microservices.

Yes, these Node.js backend patterns apply directly to GraphQL services, microservices, real-time apps, and background jobs. The architecture supports secure authentication, database integration, and error handling across varied server implementations.

Both Express and Fastify are supported for production Node.js backends. The Skill provides concrete code samples and architecture patterns applicable to either framework, allowing you to choose based on your specific performance or ecosystem needs.

Using dependency injection is recommended for scalable Node.js REST APIs to manage service dependencies cleanly. DI patterns decouple components like services and repositories, making testing and maintenance significantly easier.