Vue.js: What is the difference between v-once and v-memo in Vue?

1<template>
2    <!-- Never re-renders -->
3    <div v-once>{{ message }}</div>
4    
5    <!-- Static content -->
6    <div v-once>
7        <h1>Title</h1>
8        <p>Static content</p>
9    </div>
10</template>

1<template>
2    <!-- Re-renders only when dependencies change -->
3    <div v-memo="[item.id, item.selected]">
4        {{ item.name }}
5    </div>
6    
7    <!-- With v-for -->
8    <div v-for="item in list" :key="item.id" v-memo="[item.selected]">
9        {{ item.name }}
10    </div>
11</template>