React makes it easy to build UIs, but building fast React apps is a different skill altogether.
In this hands-on, real-world React Performance Optimization crash course, you’ll learn how React actually re-renders, why your app slows down, and which performance patterns truly matter in production — not just theory, but battle-tested techniques used by senior engineers.
This video is about knowing what to optimize, when to optimize, and how to do it right.
This course was created by @tapasadhikary
📚 Resources
Check out the React Hooks Cheatsheet: https://www.tapascript.io/books/react...
tapaScript YouTube Channel: / tapasadhikary
All my articles, handbooks on freeCodecamp: https://www.freecodecamp.org/news/aut...
Join my FREE Course, 40 Days of JavaScript: • 40 Days of JavaScript - A Complete JavaScr...
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⭐️ Chapters ⭐️
0:00:00 Performance Patterns
0:01:16 What’s in Part 1?
0:01:37 Re-Rendering in React
0:05:16 Memoization
0:07:44 The memo()
0:12:08 The useCallback()
0:20:33 the useMemo()
0:28:07 The Derived State
0:33:38 Debouncing
0:41:27 Throttling
0:46:32 Tasks from Part 1
0:48:10 Advanced Patterns
0:49:11 What’s in Part 2?
0:50:21 React Compiler
1:00:11 Lazy Loading & Suspense
1:11:31 Component Isolation
1:13:35 Context Optimizations
1:16:57 Virtualization
1:23:46 Concurrency and useTransition()
1:27:41 Deferred Value
1:30:01 List and Keys
1:31:01 Tools
1:32:37 Tasks from Part 2
1:34:08 One Word of Wisdom
🤝 Connect with Tapas
Subscribe to my YouTube Channel: / tapasadhikary
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Check out my work on GitHub: https://github.com/atapas
Follow tapaScript on GitHub: https://github.com/tapascript
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