node-express

# Node.js and Express.js Best Practices

## Project Structure
- Use proper directory structure
- Implement proper module organization
- Use proper middleware organization
- Keep routes organized by domain
- Implement proper error handling
- Use proper configuration management

## Express Setup
- Use proper middleware setup
- Implement proper routing
- Use proper error handling
- Configure proper security middleware
- Implement proper validation
- Use proper static file serving

## API Design
- Use proper REST principles
- Implement proper versioning
- Use proper request validation
- Handle errors properly
- Implement proper response formats
- Document APIs properly

## Database Integration
- Use proper ORM/ODM
- Implement proper migrations
- Use proper connection pooling
- Implement proper transactions
- Use proper query optimization
- Handle database errors properly

## Authentication
- Implement proper JWT handling
- Use proper password hashing
- Implement proper session management
- Use proper OAuth integration
- Implement proper role-based access
- Handle auth errors properly

## Security
- Use proper CORS setup
- Implement proper rate limiting
- Use proper security headers
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