Building RESTful APIs with Node.js

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Node.jsREST APIExpressBackend

A comprehensive guide to building scalable and secure REST APIs using Node.js and Express.

Building RESTful APIs with Node.js

REST APIs are the backbone of modern web applications. Let's explore how to build robust APIs with Node.js.

Why Node.js?

Node.js is perfect for building APIs because:
  • Non-blocking I/O
  • Large ecosystem (npm)
  • JavaScript everywhere
  • Excellent performance

Setting Up

bash
1npm init -y
2npm install express cors helmet
3npm install -D typescript @types/node @types/express

Basic Structure

typescript
1import express from 'express';
2import cors from 'cors';
3import helmet from 'helmet';
4
5const app = express();
6
7app.use(helmet());
8app.use(cors());
9app.use(express.json());
10
11app.get('/api/health', (req, res) => {
12  res.json({ status: 'ok' });
13});
14
15app.listen(3000, () => {
16  console.log('Server running on port 3000');
17});

Best Practices

  1. Error Handling: Always handle errors gracefully
  2. Validation: Validate all input data
  3. Security: Use helmet, rate limiting, and authentication
  4. Documentation: Document your API with OpenAPI/Swagger

Conclusion

Building REST APIs with Node.js is straightforward with the right tools and patterns.

Comments (1)

1December 4, 2025

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Building RESTful APIs with Node.js | Tech Webs