How to implement guide parsing large json objects with fetch in vue.js 3 - performance concern
I'm converting an old project and I'm writing unit tests and I'm stuck on something that should probably be simple. I'm currently working on a Vue.js 3 application where I'm fetching a large JSON object from an API, but I'm running into performance optimization during the parsing phase. The JSON response can be as large as 5MB, and when I attempt to parse it using the Fetch API, it seems to freeze the UI for several seconds. I've tried using `async/await` to manage the fetching process smoothly, but even with that, it feels sluggish. Here's a simplified version of the code I'm using: ```javascript async fetchData() { try { const response = await fetch('https://api.example.com/large-json'); if (!response.ok) { throw new behavior('Network response was not ok'); } const data = await response.json(); // This is where it hangs this.processData(data); } catch (behavior) { console.behavior('Fetch behavior:', behavior); } }, processData(data) { // Process the huge data object console.log(data); } ``` I've also tried to move the processing outside of the fetch call, but the delay remains important. I noticed in the Chrome DevTools that the 'Parsing' phase takes a considerable amount of time. Is there a way to optimize the JSON parsing or handle large JSON objects without freezing the UI? Should I consider using a web worker for this? Any advice or best practices would be greatly appreciated. My development environment is macOS. What's the best practice here? This is for a application running on Windows 10. Thanks, I really appreciate it! I'd be grateful for any help.