var mysql = require('mysql');
var session = require('express-session')
var mysql_store = require('express-mysql-session')(session),
var db_connection = mysql.createPool({
   canRetry: true,
   database: 'database',
   host: 'host',
   user: 'user',
   password: 'password',
   connectionLimit: 100
});

var sessionStore = new mysql_store({
    expiration: 1200000
}, db_connection);

app.use(session({
    secret: '5151db3f77e7847337000000',
    resave: false,
    saveUninitialized: false,
    store: sessionStore,
    expires: new Date(Date.now() + 1200000),
    cookie: {
       maxAge: 1200000
    }
}));