Advanced React Development

Chapter 15: Production Deployment

15.1 Build Optimization

Optimizing React applications for production ensures fast load times and optimal performance.

// webpack.config.js optimizations
module.exports = {
    optimization: {
        splitChunks: {
            chunks: 'all',
            cacheGroups: {
                vendor: {
                    test: /[\/]node_modules[\/]/,
                    name: 'vendors',
                    chunks: 'all'
                }
            }
        }
    },
    plugins: [
        new CompressionPlugin(), // Gzip compression
        new BundleAnalyzerPlugin() // Analyze bundle size
    ]
};

15.2 Environment Configuration

// .env.production
REACT_APP_API_URL=https://api.production.com
REACT_APP_ENV=production

// Use environment variables
const apiUrl = process.env.REACT_APP_API_URL;

15.3 Deployment Strategies

Static Hosting:

• Vercel - Optimized for Next.js
• Netlify - Great for static sites
• AWS S3 + CloudFront - Scalable CDN
• GitHub Pages - Free for public repos

Docker Deployment:

# Dockerfile
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build
FROM nginx:alpine
COPY --from=0 /app/build /usr/share/nginx/html

15.4 Monitoring and Analytics

// Error tracking
import * as Sentry from '@sentry/react';

Sentry.init({
    dsn: 'YOUR_DSN',
    environment: 'production'
});

// Performance monitoring
import { getCLS, getFID, getFCP, getLCP, getTTFB } from 'web-vitals';

function sendToAnalytics(metric) {
    // Send to analytics service
}

getCLS(sendToAnalytics);
getFID(sendToAnalytics);
getFCP(sendToAnalytics);
getLCP(sendToAnalytics);
getTTFB(sendToAnalytics);

Conclusion

Master advanced React to build scalable, performant applications.