nodejs-backend-patterns

Apply layered architecture and dependency injection to separate business logic from routing. This pattern ensures maintainability and scalability for complex REST APIs and microservices built with Express or Fastify.

Essential Node.js REST API middleware includes authentication, request validation, rate limiting, structured logging, and centralized error handling. These components secure endpoints and ensure predictable API behavior under load.

Integrate PostgreSQL and MongoDB into a Node.js microservice using established data access layers. This covers connection management, query execution, and handling transactions to ensure data integrity across backend services.

Format API responses using consistent structures across all endpoints. Complement this with caching strategies to reduce database load and improve response times for your Node.js backend services.

Yes, the guide supports both Express and Fastify. It provides framework-agnostic architectural patterns and best practices applicable to developing scalable microservices within either ecosystem.

Use layered architecture when starting a new microservice or complex REST API. It establishes a solid foundation, ensuring best practices are followed from the outset to handle scaling and maintainability.