I've been working on a large React application and started noticing performance hiccups when updating state in deeply nested components. I've tried using React.memo and useCallback, but the gains seem minimal.
Does anyone have tips or patterns for reducing unnecessary re-renders? Are there tools that can help visualize the rendering tree?
Any advice would be greatly appreciated!
Comments (3)
Try wrapping your heavy components with
React.memoand ensure your props are stable. TheuseMemohook can also help for expensive calculations.Profiler in React DevTools is great for pinpointing which components re-render too often. Look for the orange flashing bars.
Consider using state management libraries like Zustand or Redux Toolkit with select hooks to limit updates to only needed components.
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