https://www.jianshu.com/p/0b0222954483

1.keep-alive无效

1.组件name
2.最内层router-view
https://www.cnblogs.com/dansingal/p/8302100.html

2.组件keep-alive

https://www.jianshu.com/p/f3c52707656a

3.后退不刷新

https://juejin.im/post/6844903555657269261