Ssr
Build Server Rendered React App from Scratch
If you have played around with React for a while, and you are planning to build a production web app, you may need to consider the performance and SEO for your web app. And that problem can be solved by server-side rendering. Even there are many different approach to achieve better performance on client-side rendering, it might not be a good solution for low-powered devices such as an old phone.
What makes it so fast?
On the client-side rendering, also known as single page app, A typical response sent by the server when requesting a React site will look something like this: