What's difference with express-session and cookie-session?

Question

I am new with Express. As Express 4.x has removed bundled middlewares. Any middleware I want to use should be required. When I read the README with exp

Answer 1

The get a non-empty console.log(req.session) you need to set session values before logging.

From the cookie-session repo (https://github.com/expressjs/cookie-session):

app.get('/', function (req, res, next) {
 req.session.views = (req.session.views || 0) + 1
 console.log(req.session)
 res.end(req.session.views + ' views')
})

If you never set any info on the req.session object, it will return empty.