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Context API & Performance Optimization Patterns
In this lesson, we dive deep into React's Context API, exploring modern usage patterns, avoiding common performance pitfalls, and implementing optimized selectors. You'll learn how to split contexts, use `useMemo` effectively, and benchmark re-renders using React DevTools Profiler.
Key Topics Covered:
- Context creation and provider patterns
- Avoiding unnecessary re-renders
- Custom hooks for context consumption
- Performance profiling techniques
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Lesson Slides.pdf2.4 MB
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Starter Code & ExercisesZIP Archive • 1.8 MB
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Official React Context DocsExternal Link
MR
Maria Rodriguez
2 hours ago
Great explanation of context splitting! I've been struggling with unnecessary re-renders in my dashboard app. Can you clarify when to use selector pattern vs memoization?
TK
Tom K.
5 hours ago
Quick question: Does the context value update strategy change in React 18+ with automatic batching?
AJ
Alex J.
1 day ago
The Profiler demo at 18:30 was incredibly helpful. Finally understand why my components were re-rendering!