nodejs-backend-patterns

Structure a scalable Node.js backend using modular architecture with controllers, services, and repositories. This pattern separates routing, business logic, and data access to reduce boilerplate and ensure clean, maintainable code for REST or GraphQL APIs.

The best way to implement JWT authentication is by applying secure authorization patterns alongside middleware-driven validation. This secures APIs by intercepting requests to verify tokens before reaching controllers, standardizing security across your backend.

Middleware handles errors and rate limiting by intercepting requests centrally to catch exceptions and control traffic flow. Applying these cross-cutting concerns as middleware improves API reliability and prevents abuse without cluttering core business logic.

Yes, you can use this architecture pattern for microservices and serverless backends. The modular design with dependency injection and environment-based configuration adapts seamlessly to both REST and GraphQL deployments across various serverless platforms.

Choosing Express or Fastify depends on your performance needs, but both are fully supported. The Skill applies consistent routing, validation, and data access patterns to either framework, allowing you to build production-ready APIs without framework lock-in.