Optimizing Performance with Vue 3 Suspense and Async Components

Vue 3’s Suspense and async components provide a way to handle asynchronous data fetching while keeping the UI responsive.

What is Suspense?

Suspense is a component that displays a fallback while waiting for async data.

<template>
  <Suspense>
    <template #default>
      <AsyncComponent />
    </template>
    <template #fallback>
      <p>Loading...</p>
    </template>
  </Suspense>
</template>

Using Async Components

You can dynamically load components using async functions.

<script setup>
import { defineAsyncComponent } from 'vue';

const AsyncComponent = defineAsyncComponent(() =>
  import('./MyComponent.vue')
);
</script>

<template>
  <AsyncComponent />
</template>

Why Use Suspense and Async Components:

• Improve performance by loading components only when needed.
• Keep the UI responsive with fallbacks while loading.
• Optimize initial load time by splitting large components.

By combining Suspense and async components, you can handle asynchronous data efficiently, enhancing the user experience with smoother and more responsive interfaces.