👀 Views: 0 💬 Answers: 1 📅 Created: 2025-09-24

react api performance javascript

I've hit a wall trying to Hey everyone, I'm running into an issue that's driving me crazy. This might be a silly question, but Currently developing a dashboard that aggregates data from multiple third-party APIs using React and Axios. The dashboard is expected to display real-time analytics, but I’ve noticed some significant performance lags with the initial rendering of HTML elements. Each API call brings back a substantial amount of data, and I’m concerned that the way I'm structuring my HTML might be impacting the rendering speed. I’ve initially set up API calls in `useEffect` hooks like this: ```javascript useEffect(() => { const fetchData = async () => { const response = await axios.get('https://api.example.com/data'); setData(response.data); }; fetchData(); }, []); ``` However, as the number of APIs increased, I found that my rendering performance was not satisfactory. To mitigate this, I tried to implement pagination within the UI to limit the number of visible elements at once. This approach helped a bit, but I need to ensure that the HTML generated is as lean as possible to improve the first contentful paint (FCP). I’ve also considered lazy loading components and using React’s `Suspense` feature, which seems promising. Here’s a simplified version of what I’ve tried: ```javascript <Suspense fallback={<div>Loading...</div>}> <DataComponent /> </Suspense> ``` But, I’m not entirely sure if this handles all edge cases effectively when the data is coming from various sources in real-time. Additionally, I’ve been removing unnecessary HTML attributes and ensuring that I’m using semantic tags appropriately, but I’m curious if there are any other best practices or patterns that I should be following to optimize performance further. I’d love insights on other methods to optimize the HTML structure and loading strategies, especially when dealing with multiple external API integrations. Any guidance or examples relevant to React or performance optimization would be greatly appreciated. Has anyone else encountered this? I'm developing on Ubuntu 22.04 with Javascript. I'd love to hear your thoughts on this.