1. Code Splitting & Lazy Loading

  • Dynamic Imports: Split code into chunks using import() syntax
    Code_Splitting
  • Lazy Loading Components: Load only essential assets initially
    Lazy_Load
  • Webpack/Parcel: Use bundlers to split code intelligently
    Webpack

2. Preloading & Preconnecting

  • rel="preload" for critical resources: 
    <link rel="preload" href="/styles.css" as="style">
  • rel="preconnect" to establish early connections: 
    <link rel="preconnect" href="https://api.example.com">
    Preloading

3. Server-Side Optimization

  • HTTP/2 or HTTP/3: Enable multiplexing and reduced latency
    HTTP_2_3
  • Brotli Compression: Reduce transfer sizes by 20-30%
  • Server Timing API: Measure and analyze server-side performance

4. Advanced Caching Strategies

  • Stale-While-Revalidate: Serve cached content while fetching fresh data
  • Cache-Control Headers: Use max-age and s-maxage for granular control
  • Service Workers: Implement custom caching logic
    Cache_Control

5. Performance Monitoring

  • Lighthouse: Audit performance and accessibility
    Lighthouse
  • Web Vitals: Track CLS, LCP, FID metrics
  • Real User Monitoring (RUM): Analyze actual user data

For deeper insights, explore our guide on Web Performance Metrics to understand key indicators.

Performance_Monitoring