gistfile1.js

var session = require('express-session')
  , config = require('../config')
  , mongoStore = require('connect-mongo')({session: session});

module.exports = function() {
  return session({
    secret: config.sessions.secret,
    store: new mongoStore({
      url: config.db.url,
      collection : config.sessions.collection
    }),
    cookie: {
      maxAge: 1000*60*60*24*30
    }
  });
};