Vue.js: How do you optimize Vue performance?

Optimization — virtual DOM, reactivity.

Techniques:

• v-once: Static content.
• v-memo: Conditional re-render.
• shallowRef: Shallow reactivity.
• computed: Cached values.
• v-for key: Stable keys.

Lazy loading:

1const Heavy = defineAsyncComponent(() => import("./Heavy.vue"))

Code splitting:

1{ path: "/admin", component: () => import("./Admin.vue") }

Key: Use v-once, v-memo, computed for performance.