Node.js Backend Development

In this module, we'll dive deep into Node.js backend development from a Python developer's perspective. You'll learn how to build robust server-side applications using JavaScript, leveraging your existing backend development knowledge.

Node.js Runtime Environment

Python vs Node.js Runtime Comparison

Express.js Advanced Features

Routing and Middleware Ecosystem

Database Integration

MongoDB with Mongoose vs Django ORM

Authentication and Authorization

JWT Authentication System

Real-time Features with WebSockets

Socket.IO vs Django Channels

File Handling and Uploads

Multer vs Django File Handling

Testing and Debugging

Jest vs Python Testing

Summary and Best Practices

Node.js Development Guidelines

1. Environment Configuration

   • Use environment variables for configuration
   • Implement proper error handling
   • Use process managers like PM2 for production

2. Security Best Practices

   • Implement rate limiting
   • Use helmet.js for security headers
   • Validate and sanitize input data
   • Implement proper authentication and authorization

3. Performance Optimization

   • Use connection pooling for databases
   • Implement caching strategies
   • Use compression middleware
   • Monitor memory usage and handle memory leaks

4. Database Integration

   • Choose between SQL (PostgreSQL) and NoSQL (MongoDB)
   • Implement proper indexing
   • Use transactions where appropriate
   • Handle database connection errors gracefully

5. Testing Strategy

   • Write unit tests for business logic
   • Implement integration tests for APIs
   • Use mocking for external dependencies
   • Maintain good test coverage

---

In the next module, we'll explore package management and the JavaScript ecosystem, learning how to leverage npm and build modern development workflows.