How do I configure express-session in my Node.js app?

How do I configure express-session in my Node.js app?

To configure express-session, first install it using npm: npm install express-session. Then, set it up in your app like this:

Can you show me a code example?

Sure! Here's a basic example:

const session = require('express-session');
const express = require('express');

const app = express();

app.use(session({
  secret: 'your-secret-key',
  resave: false,
  saveUninitialized: true,
  cookie: { secure: false }
}));

app.get('/', (req, res) => {
  req.session.views = (req.session.views || 0) + 1;
  res.send(`Number of views: ${req.session.views}`);
});

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

This sets up a session with a secret key and a simple view counter.

What does the 'secret' option do?

The 'secret' option is used to sign the session ID cookie, which helps prevent tampering. It's important to keep it secure.