aj-geddes/web-performance-optimization

Web Performance Optimization

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Implement performance optimization strategies including lazy loading, code splitting, caching, compression, and monitoring to improve Core Web Vitals and user experience.

When to Use

• Slow page load times
• High Largest Contentful Paint (LCP)
• Large bundle sizes
• Frequent Cumulative Layout Shift (CLS)
• Mobile performance issues

Quick Start

Minimal working example:

// utils/lazyLoad.ts
import React from 'react';

export const lazyLoad = (importStatement: Promise<any>) => {
  return React.lazy(() =>
    importStatement.then(module => ({
      default: module.default
    }))
  );
};

// routes.tsx
import { lazyLoad } from './utils/lazyLoad';

export const routes = [
  {
    path: '/',
    component: () => import('./pages/Home'),
    lazy: lazyLoad(import('./pages/Home'))
  },
  {
    path: '/dashboard',
    lazy: lazyLoad(import('./pages/Dashboard'))
  },
  {
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

| Guide | Contents | |---|---| | Code Splitting and Lazy Loading (React) | Code Splitting and Lazy Loading (React) | | Image Optimization | Image Optimization | | HTTP Caching and Service Workers | HTTP Caching and Service Workers | | Gzip Compression and Asset Optimization | Gzip Compression and Asset Optimization | | Performance Monitoring | Performance Monitoring |

Best Practices

✅ DO

• Follow established patterns and conventions
• Write clean, maintainable code
• Add appropriate documentation
• Test thoroughly before deploying

❌ DON'T

• Skip testing or validation
• Ignore error handling
• Hard-code configuration values