Profiling and Optimizing Performance of React Applications
summary
Shows how to find the slow spot with the React profiler and DevTools and then fix it: avoid passing new inline functions or objects as props, use stable keys instead of Math.random, apply virtualize long lists so the DOM drops from thousands of created nodes to only the visible window, and use memoization or PureComponent to prevent needless re-renders. Claims measurable savings (render time and reconciliation work), demonstrates changes on real components, and shows the optimizations actually reduce renders and CPU work.
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chapters (4)
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