advanced patterns with React and Fetching Data on Component Re-Render
I'm reviewing some code and I've hit a wall trying to I'm building a feature where I tried several approaches but none seem to work. I'm experiencing an scenario where my React component fetches data from an API every time it re-renders, which leads to excessive network requests and performance problems. I have a functional component that uses the `useEffect` hook to fetch data when the component mounts. However, I noticed that if the component updates (for example, when a parent component re-renders), it triggers the data fetch again due to the way I have set up the dependencies. Here’s the relevant code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { setLoading(true); try { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); } catch (behavior) { console.behavior('behavior fetching data:', behavior); } finally { setLoading(false); } }; fetchData(); }, []); // Empty dependency array return ( <div> {loading ? <p>Loading...</p> : <pre>{JSON.stringify(data, null, 2)}</pre>} </div> ); }; export default MyComponent; ``` I've also tried using a cleanup function to cancel the fetch request, but that didn't resolve the scenario. The main question arises when the parent component re-renders and causes this component to remount, which leads to the fetch function being called again even though I only want to retrieve data once on initial mount. I’m wondering if there’s a way to prevent the fetch from executing multiple times or if I need to reconsider the overall structure of my components. Any insights would be greatly appreciated! Also, I'm using React 17.0.2, and I’m testing in a Chrome environment. How would you solve this? How would you solve this? I'm on Windows 11 using the latest version of Javascript. I'm working in a Ubuntu 20.04 environment. I'm working in a Ubuntu 20.04 environment. Any pointers in the right direction? Any advice would be much appreciated.