performance optimization When Iterating Over Large Array of Objects in React with useEffect
I'm trying to configure I'm upgrading from an older version and I've been banging my head against this for hours... I've been struggling with this for a few days now and could really use some help... I'm working with performance optimization in my React application when trying to process a large array of objects (about 10,000 items) within the `useEffect` hook. Each object in the array has several properties, and I'm attempting to perform a transformation on each object which involves some heavy computation. Here's a simplified version of my code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState([]); useEffect(() => { const largeArray = Array.from({ length: 10000 }, (_, i) => ({ id: i, value: i * 2 })); const transformedData = largeArray.map(item => { // Simulated heavy computation return { ...item, computedValue: Math.sqrt(item.value) }; }); setData(transformedData); }, []); return <div>{data.map(item => <div key={item.id}>{item.computedValue}</div>)}</div>; }; export default MyComponent; ``` The question I'm working with is that the UI freezes during the transformation process, and the browser becomes unresponsive for a few seconds. I've tried using `requestAnimationFrame` to break the computation into smaller chunks, but that didn't seem to improve the situation significantly. I also read about using web workers to handle heavy computations off the main thread, but I'm unsure how to implement that in this context. Has anyone encountered similar issues with large arrays in React? What are some best practices for optimizing performance in this scenario? Any advice or examples on how to effectively use web workers would be greatly appreciated. My development environment is Linux. Has anyone else encountered this? The project is a microservice built with Javascript. My development environment is Debian. Am I missing something obvious?