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Project Setup & Configuration

• npx create-react-app my-app - Create React app
• PORT=3001 npm start - Start on port 3001
• Configure package.json scripts
• Set up .env files for environment variables
• Configure proxy for API calls

Development Server Commands

• npm start - Start development server
• PORT=3001 npm start - Use port 3001
• npm run build - Production build
• npm test - Run tests
• npm run eject - Eject from CRA

Component Architecture

• Functional components with hooks
• Custom hooks for logic reuse
• Context API for state management
• Component composition patterns
• Error boundaries implementation

State Management

• useState for local state
• useReducer for complex state
• Redux for global state
• Zustand for lightweight state
• React Query for server state

Project Setup & Commands

• npm init -y - Initialize Node.js project
• npm install express - Install Express
• node server.js - Run server
• PORT=3001 node server.js - Custom port
• nodemon server.js - Auto-restart

Express Configuration

• Middleware setup and configuration
• Route organization and structure
• Error handling middleware
• CORS configuration
• Static file serving

Database Integration

• MongoDB with Mongoose
• PostgreSQL with Sequelize
• MySQL with mysql2
• Redis for caching
• Database connection pooling

API Development

• RESTful API design
• JWT authentication
• Input validation with Joi
• API documentation with Swagger
• Rate limiting implementation

Port Configuration

• PORT=3000 npm start - Main React app
• PORT=3001 npm start - Secondary React app
• const PORT = process.env.PORT || 3000 - Node.js
• const PORT = process.env.PORT || 3001 - Backup port
• Environment-specific port configuration

Development Workflows

• Feature branch development
• Parallel development testing
• Version comparison testing
• Microservices development
• Team collaboration scenarios

Service Management

• Load balancing between ports
• Service discovery configuration
• Health check endpoints
• Monitoring and logging
• Graceful shutdown handling

Testing & Quality

• Cross-service integration testing
• Performance testing across ports
• Load testing scenarios
• End-to-end testing
• Monitoring and alerting

IDE Configuration

Configure your development environment:

• VS Code: Install React and Node.js extensions
• WebStorm: Configure React project settings
• Atom: Set up React development tools
• Configure debugging and breakpoints
• Set up code formatting and linting

Package Management

Node.js package management:

• npm install - Install dependencies
• npm update - Update packages
• npm audit - Security audit
• Use yarn for faster installs
• Configure .npmrc for custom settings

Database Setup

Local database configuration:

• MongoDB with Docker
• PostgreSQL with Docker
• SQLite for simple development
• Redis for caching
• Database migration tools

Development Tools

Essential development utilities:

• Git for version control
• Docker for containerization
• Postman for API testing
• Browser DevTools for frontend
• Database management tools

React Optimization

• Use React.memo for component memoization
• Implement useMemo and useCallback
• Code splitting with React.lazy
• Bundle size optimization
• Virtual scrolling for large lists

Node.js Performance

• Use async/await patterns
• Implement connection pooling
• Response caching strategies
• Database query optimization
• Memory leak prevention

Security Measures

• Keep dependencies updated
• Use HTTPS in production
• Implement proper authentication
• Validate and sanitize user input
• Use environment variables for secrets

Development Workflow

• Use version control effectively
• Implement automated testing
• Set up CI/CD pipelines
• Code review processes
• Documentation practices