关于react服务器端渲染的几个问题，有点不清楚

Question

服务器端渲染就是：服务端直接将数据填充好，生成 html 返回给浏览器
这个理解
后面呢？浏览器渲染好这些html加载完js之后呢？会又执行一遍react的声明周期吗？
还是react已经处理好了，不会重复componentWillmound?

Answer 1

If you call ReactDOM.hydrate() on a node that already has this
server-rendered markup, React will preserve it and only attach event
handlers, allowing you to have a very performant first-load
experience.^[1]

[1] https://reactjs.org/docs/reac...