How to Implement Server-Side Rendering in a React App?

Server-Side Rendering (SSR) is a technique that can significantly improve the performance and SEO of your React applications. By rendering your React components on the server, you send fully rendered pages to the client.

Here’s a basic approach to implement SSR in a React app:

• Step 1: Set up a Node.js server:

const express = require('express');
const React = require('react');
const ReactDOMServer = require('react-dom/server');
const App = require('./App');

const app = express();

• Step 2: Create a route to handle the SSR:

app.get('*', (req, res) => {
  const appString = ReactDOMServer.renderToString();
  res.send(`${appString}`);
});

• Step 3: Start your server:

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

With this setup, your React application will render on the server, providing a faster initial load time and better SEO performance.