Performance & Optimization

Optimize bundle size, implement lazy loading, and master web performance metrics.

Coming Soon

Performance optimization documentation is being crafted. Learn to build lightning-fast web applications!

What You’ll Learn

• Core Web Vitals: LCP, FID, CLS and how to optimize them
• Bundle Optimization: Code splitting, tree shaking, and bundle analysis
• Loading Strategies: Lazy loading, preloading, and progressive enhancement
• React Performance: Memoization, virtualization, and React DevTools
• Network Optimization: Caching, CDNs, and resource optimization

Expected Topics

// Performance patterns you'll master
import { memo, useMemo, useCallback, lazy, Suspense } from 'react';
import { measureWebVitals } from './utils/webVitals';
 
// Code splitting with React.lazy
const HeavyComponent = lazy(() => import('./HeavyComponent'));
 
// Memoized component to prevent unnecessary re-renders
const OptimizedUserCard = memo(({ user, onSelect }) => {
  const displayName = useMemo(() => {
    return `${user.firstName} ${user.lastName}`.trim();
  }, [user.firstName, user.lastName]);
 
  const handleClick = useCallback(() => {
    onSelect(user.id);
  }, [user.id, onSelect]);
 
  return (
    <div className="user-card" onClick={handleClick}>
      <img
        src={user.avatar}
        alt={displayName}
        loading="lazy" // Native lazy loading
        decoding="async"
      />
      <h3>{displayName}</h3>
    </div>
  );
});
 
// Performance monitoring
const App = () => {
  useEffect(() => {
    // Measure and report web vitals
    measureWebVitals((metric) => {
      console.log('Web Vital:', metric);
      // Send to analytics
    });
  }, []);
 
  return (
    <Suspense fallback={<LoadingSpinner />}>
      <HeavyComponent />
    </Suspense>
  );
};

Performance Optimization Techniques

• Image Optimization: Next.js Image component and responsive images
• Font Optimization: Font loading strategies and font-display
• JavaScript Optimization: Minification, compression, and modern syntax
• CSS Optimization: Critical CSS, unused CSS removal
• Caching Strategies: Service workers, HTTP caching, and browser cache

Performance Monitoring Tools

• Lighthouse: Automated performance auditing
• Web Vitals: Real user monitoring metrics
• React DevTools Profiler: Component performance analysis
• Bundle Analyzer: Visualize bundle composition
• Performance Observer API: Custom performance measurements

Advanced Performance Topics

• Server-Side Rendering: SSR vs SSG performance implications
• Streaming: React 18 concurrent features
• Edge Computing: CDN and edge function optimization
• Progressive Web Apps: Service workers and offline strategies

Expected launch: Q1 2025

Master performance optimization techniques to build blazing-fast web applications that delight users.