👀 Views: 0 💬 Answers: 1 📅 Created: 2025-09-09

React state-management performance JavaScript

I've spent hours debugging this and I've spent hours debugging this and I recently switched to In my codebase, we're migrating a legacy application to React and recently started working on optimizing the user interface to meet modern standards... Although I initially implemented local component state management with `useState`, the complexity increased significantly when dealing with deeply nested components that needed to share state. To tackle this, I switched to using Context API for some global states, yet I’m still running into performance bottlenecks, especially when rendering large lists of items dynamically fetched from an API. Here's a snippet of the current component structure: ```javascript import React, { useState, useContext, useEffect } from 'react'; import { MyContext } from './MyContext'; const ItemList = () => { const { items } = useContext(MyContext); const [filteredItems, setFilteredItems] = useState([]); useEffect(() => { // Assuming items are being fetched and set in context setFilteredItems(items); }, [items]); return ( <ul> {filteredItems.map(item => <li key={item.id}>{item.name}</li>)} </ul> ); }; ``` While this works, I notice a delay in rendering when the `items` array becomes large, leading to performance issues. I've looked into libraries like `react-window` to efficiently render large lists, but I'm not sure how to integrate it with my current architecture. Would it make sense to switch to a more sophisticated state management solution, like Redux or Zustand, to handle these issues? Furthermore, I've been experimenting with memoization using `React.memo` and `useCallback`, but I’m unsure how effective this will be in mitigating the rendering lag. The documentation hints at performance gains, but I can't quite grasp where to apply these optimizations effectively. Any insights or experiences with migrating similar UIs would be incredibly helpful. I'm working in a Debian environment. This is happening in both development and production on Windows 10. I appreciate any insights! Thanks for taking the time to read this!