React Performance Optimization Patterns Course

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...   Join my FREE Course, 15 days of React Design patterns:    • 15 Days of React Design Patterns – Write C...   ⭐️ 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   Connect on LinkedIn:   / tapasadhikary   Follow on X:   / tapasadhikary   Check out my work on GitHub: https://github.com/atapas Follow tapaScript on GitHub: https://github.com/tapascript Join tapaScript Discord:   / discord   ❤️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp 🎉 Thanks to our Champion and Sponsor supporters: 👾 @omerhattapoglu1158 👾 @goddardtan 👾 @akihayashi6629 👾 @kikilogsin 👾 @anthonycampbell2148 👾 @tobymiller7790 👾 @rajibdassharma497 👾 @CloudVirtualizationEnthusiast 👾 @adilsoncarlosvianacarlos 👾 @martinmacchia1564 👾 @ulisesmoralez4160 👾 @_Oscar_ 👾 @jedi-or-sith2728 👾 @justinhual1290 -- Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://freecodecamp.org/news