Project Setup

Start by installing Express and structuring your project properly.

npm init -y
npm install express mongoose dotenv cors

Server Configuration

const express = require('express');
const app = express();

app.use(express.json());
app.use(cors());

app.listen(3000, () => console.log('Server running on port 3000'));

Creating Routes

// routes/users.js
router.get('/', getUsers);
router.post('/', createUser);
router.get('/:id', getUser);
router.put('/:id', updateUser);
router.delete('/:id', deleteUser);

Best Practices

Use middleware for authentication. Separate routes from controllers. Implement proper error handling with try-catch blocks.

Conclusion

Express makes building APIs straightforward. Good architecture and middleware ensure maintainability and scalability.