Why Node.js for APIs?
Node.js has become the go-to choice for building REST APIs due to its asynchronous, event-driven architecture. When combined with Express.js, it provides a lightweight yet powerful framework for building scalable backend services.
Project Structure
A well-organized project structure is essential for maintainability. Follow the separation of concerns principle by organizing your code into controllers, services, models, and routes.
Authentication & Security
Implementing proper authentication is crucial. Use JWT tokens for stateless authentication, bcrypt for password hashing, and implement rate limiting to prevent abuse.
const jwt = require('jsonwebtoken');
const bcrypt = require('bcryptjs');
// Hash password
const salt = await bcrypt.genSalt(12);
const hashedPassword = await bcrypt.hash(password, salt);Error Handling
Implement centralized error handling middleware to ensure consistent error responses across your API. This makes debugging easier and provides a better experience for API consumers.
- Use custom error classes
- Implement global error handler middleware
- Log errors appropriately
- Return meaningful error messages