nodejs-backend-patterns

Implement a layered architecture separating controllers, services, and repositories to isolate business logic from data access. This Express and Fastify pattern simplifies maintenance and keeps your Node.js backend modular.

Handle Node.js authentication using JWT-based token flows for secure stateless validation. Applying these authorization checks within your middleware suite ensures protected route access and proper user identity verification across backend services.

Manage PostgreSQL and MongoDB connections by integrating them through the repository layer. This pattern centralizes connection management and transaction handling, keeping Node.js data access logic separated from core service business rules.

Yes, these Node.js backend patterns support building REST, GraphQL, microservices, and real-time apps. Architectural layering and middleware suites for validation and rate limiting provide the necessary foundation for scalable distributed systems.

Use Node.js middleware for error handling and rate limiting to centralize request processing and protect endpoints. Structured middleware suites capture exceptions uniformly and prevent abuse, ensuring backend stability and security under heavy traffic.