Session management in Nodejs

Question

I am beginner of NodeJS.And just started a simple project where I need a session management concept. So How to manage the session in NodeJS application.

In my projec

Answer 1

An update on 2019, using express-session 1.15.6 (From 1.5 there's no need to use cookie-parser, session can read and write the cookie directly.)

In app.js:

const app = express()
const session = require('express-session');
const options = {
  name: 'foo', // Default is connect.sid
  store: this.store, // Default is memoryStore, which is for dev only. Setup redis or memcached for prod
  secret: 'bar', // Required, used to sign session id cookie
  saveUninitialized: true, // Forces a session that is "uninitialized" to be saved to the store
  resave: false, //Forces the session to be saved back to the session store
  rolling: true //Force a session identifier cookie to be set on every response
};
// Session method will return a middleware function.
const middleware = session(options);
// Now we can make use of session in all the requests
app.use(middleware)

In routes.js or in any handler file created for specific route:

handler1(req, res, next) {
  req.session.someField = 'foo';
  // Use save method to update the store immediately, if there's other AJAX call pending. 
  req.session.save();
}

handler2(req, res, next) {
  console.log(req.session.someField); 
}

handler3(req, res, next) {
  // we use delete operator here.
  delete req.session.someField; 
}