implementing Slow Response Times in a Vue.js App Due to Excessive Watcher Overhead
I've been researching this but I need some guidance on I'm working on a personal project and I'm experiencing important performance optimization in my Vue.js application, particularly with response times lagging when I interact with my data table component... The data table is populated with around 10,000 rows, and each row has a checkbox that, when checked or unchecked, triggers a computed property to recalculate some data based on the selected rows. I've noticed that as the data table grows, the performance degrades rapidly, and the UI becomes unresponsive. The console shows warnings like `You are using a computed property that is too expensive and will re-evaluate too frequently!`. I tried optimizing the computed properties by caching results, but it hasn't helped much. Here's the relevant part of my Vue component: ```javascript <template> <table> <tr v-for="item in items" :key="item.id"> <td> <input type="checkbox" v-model="item.selected" /> </td> <td>{{ item.name }}</td> </tr> </table> </template> <script> export default { data() { return { items: [] // Assume this gets populated from an API }; }, computed: { selectedItems() { return this.items.filter(item => item.selected); } } }; </script> ``` To diagnose the scenario, I implemented Vue's performance tracking tools and noticed that the overhead from the reactivity system is substantial. I also considered using `v-once` for static rows but it doesn't work well with dynamically updating data. I've also tried batch updating the items to minimize the number of updates but the question continues. Are there any best practices or design patterns I might be missing that could help optimize the performance of this data table or reduce the computed property overhead? Any guidance would be greatly appreciated! How would you solve this? Hoping someone can shed some light on this. This is my first time working with Javascript 3.10. Cheers for any assistance!