nodejs-backend-patterns

Structure a production-ready Node.js backend using layered architecture and dependency injection. This approach separates business logic from routing, ensuring maintainable Express and Fastify services with robust error handling.

The best way to implement secure authentication middleware in a Node.js API is by using JSON Web Tokens and bcrypt. This pattern securely hashes passwords and validates user sessions across Express or Fastify routes.

Handle API rate limiting and validation in Node.js microservices by integrating express-rate-limit, rate-limit-redis, and Zod. This combination prevents abuse and ensures incoming payloads match expected schemas.

Yes, you can use both PostgreSQL and MongoDB in the same Node.js backend project. The implementation patterns support integrating pg for relational data and mongoose for NoSQL document storage within your services.

Yes, this Node.js backend guide supports Fastify with Helmet and CORS. It includes specific patterns for integrating @fastify/helmet and @fastify/cors to secure HTTP headers and control cross-origin resource sharing.

For a production Node.js server, use structured logging patterns with Pino and pino-pretty. This setup provides high-performance, readable logs that are essential for monitoring API requests and debugging.