React 18: Using useMemo for Optimizing Performance with Large Lists but working with advanced patterns
I'm wondering if anyone has experience with I'm prototyping a solution and I'm dealing with I've searched everywhere and can't find a clear answer... I'm working on a React 18 application where I have a large list of items displayed on the screen, and I want to optimize the rendering using `useMemo`. However, I'm running into an scenario where the memoized value sometimes appears stale or doesn't update as expected. Here's a simplified version of my component: ```javascript import React, { useState, useMemo } from 'react'; const LargeListComponent = ({ items }) => { const [filter, setFilter] = useState(''); const filteredItems = useMemo(() => { console.log('Filtering items...'); return items.filter(item => item.includes(filter)); }, [items, filter]); return ( <div> <input type="text" value={filter} onChange={(e) => setFilter(e.target.value)} /> <ul> {filteredItems.map((item, index) => ( <li key={index}>{item}</li> ))} </ul> </div> ); }; export default LargeListComponent; ``` The question arises when I change the filter text quickly; sometimes the console log indicates that the filtering is happening, but the displayed list doesn't update correctly until the second or third change. I expected the `filteredItems` to instantly reflect the input, but the UI feels sluggish and inconsistent. I've checked to ensure that both `items` and `filter` are updating correctly. I'm not seeing any warnings in the console, but I suspect it may have something to do with how React batches updates in concurrent mode or how I'm using `useMemo`. Has anyone else faced a similar scenario, or does anyone have pointers on optimizing the performance of large lists while ensuring the UI remains responsive? For context: I'm using Javascript on Ubuntu. How would you solve this? This is part of a larger API I'm building. This is my first time working with Javascript 3.11. What's the correct way to implement this? Hoping someone can shed some light on this. Thanks for your help in advance!