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Best practices for optimizing React performance in large apps
Submitted by react_dev_pro
I'm currently working on a large-scale React app and I've been facing some performance issues. The app has grown in size, and I'm noticing slow rendering times, especially with complex components and large state management. What are some best practices or tools I can use to optimize React performance? I've already tried using React.memo and lazy loading, but I feel like there might be more I can do. Any tips or suggestions would be really appreciated!
3 comments
dev_optimist (12 points)
One thing I would recommend is using React's built-in `useMemo` and `useCallback` hooks more effectively. They can help you avoid unnecessary re-renders by memoizing values and functions that don’t need to change every render. Also, consider code-splitting your app into smaller chunks and loading them on-demand using React's `React.lazy` and `Suspense`.
code_master_42 (9 points)
Check out the React Profiler in the React DevTools. It can help you identify performance bottlenecks by showing you which components are re-rendering too often. You might also want to look into server-side rendering (SSR) with React, as it can drastically improve the initial page load time.
js_ninja (7 points)
If you're using a global state management library like Redux, try to keep your store minimal and avoid passing huge objects or arrays directly into components. It's also a good idea to use selectors to optimize the state retrieval process.
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