1. Modular Development 📦

  • Use ES6 modules for better code organization 
    // example.js
export function greet(name) {
  return `Hello, ${name}!`;
}
  • Split into microservices for complex applications
    Learn more about module patterns
  • 📎 Always keep your node_modules directory clean with npm install --save
node_modules Structure

2. Error Handling 🔍

  • Implement try/catch blocks for async operations 
    try {
  await fetchData();
} catch (error) {
  console.error('🚨 Error fetching data:', error.message);
}
  • Use custom error classes for better debugging
    Check our error handling tutorial
  • 🧠 Log errors to centralized systems (e.g., Sentry, Datadog)

3. Performance Optimization ⚡

  • Prefer async/await over callbacks/promises
  • Use streaming for large data transfers
  • Enable HTTP/2 with https module for faster connections
  • 📈 Monitor performance with node --inspect or clinic

4. Security Essentials 🔒

  • Validate all user inputs with express-validator
  • Always use HTTPS in production
  • Store secrets in .env files using dotenv
  • 🧾 Regularly update dependencies via npm audit

5. Code Maintainability 🛠️

  • Follow Prettier and ESLint conventions
  • Write unit tests with Mocha/Jest
  • Use TypeScript for type safety
  • 📚 Document APIs with Swagger/OpenAPI
Node.js Security

6. Development Tips 🧪

  • Use nodemon for auto-restarting during development
  • Implement CI/CD pipelines with GitHub Actions
  • Leverage Node.js clustering for multi-core systems
  • 📊 Profile code with node --prof

Explore advanced Node.js patterns to deepen your expertise!