Building Scalable APIs with Node.js

When building APIs, there are several key considerations to keep in mind for scalability and maintainability.

1. Project Structure

src/
├── controllers/
├── routes/
├── services/
├── models/
└── utils/

2. Error Handling

Always implement proper error handling:

try {
  const result = await service.process();
  return res.json(result);
} catch (error) {
  logger.error(error);
  return res.status(500).json({ error: 'Internal server error' });
}

3. Validation

Use libraries like Zod or Joi for request validation.

4. Testing

Write unit and integration tests for critical paths.

Happy coding! 🚀