React Performance Optimization - Full Course

Published: 11 October 2025
on channel: Frontend Master

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Content:

00:00 Intro
00:50 What is not re-rendering.
04:30 Re-Rendering
11:22 When does a component re-render?
11:48 When Re-Rendering is Bad.
15:17 Detect if your app is slow
21:38 Memoizing Component
23:22 Memoizing Value
26:36 Memoizing a function
31:27 Lazy loading component
34:55 Suspense in React19
37:42 Lazy loading JS file
39:44 Infinite Scroll
41:20 Virtualization
43:00 WhyDidYouRender

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