Performance

A fast website is not a luxury — it is a baseline expectation. Users abandon pages that take more than a few seconds to load, and search engines penalize slow sites in their rankings. This topic covers the metrics that matter, the optimization techniques that move the needle, and the strategies that keep your site fast as it grows.

1. 1
   Core Web Vitals

   LCP, INP, and CLS — the three metrics Google uses to measure real-world user experience and influence search rankings.
2. 2
   Page Speed Optimization

   The critical rendering path, render-blocking resources, minification, compression, and server response time.
3. 3
   Image Optimization

   Modern formats like WebP and AVIF, responsive images, proper dimensions, and compression tools.
4. 4
   Caching Strategies

   Browser caching, CDN layers, service workers, cache busting, and server-side caching with Redis and Memcached.
5. 5
   Lazy Loading

   Native lazy loading, Intersection Observer, dynamic imports, skeleton screens, and when not to defer content.