SSR pages showed blank screens for 3 seconds during data loading. Streaming SSR sends ready parts first, dramatically improving perceived speed.
Optimizing by gut feeling made my app slower. Learn to use Performance profiler to find real bottlenecks and fix what matters.
Text to Binary (HTTP/2), TCP to UDP (HTTP/3). From single-file queueing to parallel processing. Google's QUIC protocol story.
From HTML parsing to DOM, CSSOM, Render Tree, Layout, Paint, and Composite. Mastering the Critical Rendering Path (CRP), Preload Scanner, Reflow vs Repaint, and requestAnimationFrame.
Obsessively wrapping everything in `useMemo`? It might be hurting your performance. Learn the hidden costs of memoization and when to actually use it.
