Vue Performance

Making Vue Faster

Measure first with Vue DevTools and browser performance tools.

Wins: lazy routes, v-once/v-memo judiciously, computed over methods, virtualize huge lists.

const AsyncAdmin = defineAsyncComponent(() => import('./Admin.vue'))

Async component for code splitting.

Checklist

props stability, avoid unnecessary watchers, shallowRef for large read-mostly data

• Handle loading and errors.
• Keep composables tested.
• Prefer TypeScript when you can.
• Measure before optimizing.

Vue Performance Cheatsheet

Quick reference for patterns covered in this lesson.

Premature Optimization

Readable reactivity first; optimize hotspots next.

Common Mistakes

• Deep watching giant objects.
• Micro-optimizing tiny lists.

Key Takeaways

• Vue Performance shows up often in Vue apps.
• Practice with a demo.
• Prefer clear APIs.
• Read official docs for edge cases.