very simple login session with expressjs

app.js

/**
 * Module dependencies.
 */

var express = require('express')
  , routes = require('./routes')

var app = module.exports = express.createServer();
var RedisStore = require('connect-redis')(express);
// Configuration

app.configure(function(){
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(require('stylus').middleware({ src: __dirname + '/public' }));
  app.use(app.router);
  app.use(express.static(__dirname + '/public'));
  app.use(express.cookieParser());
  app.use(express.session({ secret: "keyboard cat", store: new RedisStore }));
});

app.configure('development', function(){
  app.use(express.errorHandler({ dumpExceptions: true, showStack: true })); 
});

app.configure('production', function(){
  app.use(express.errorHandler()); 
});

// Routes

app.get('/', routes.index);
app.post('/login', function(req, res){
  req.session.user = 'haha';
  res.send(req.session.user);
});
app.listen(3000);
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);