redisnotworking

var express = require('express')
  , redis = require('redis')
  , routes = require('./routes')
  , user = require('./routes/user')
  , http = require('http')
  , path = require('path');

var redisStore = redis.createClient();
var app = express();
app.enable('trust proxy');

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.favicon());
  app.use(express.logger('dev'));
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.cookieParser('your secret here'));
  app.use(express.session());
  app.use(app.router);
  app.use(express.static(path.join(__dirname, 'public')));
});

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

app.use(function(req, res, next){
        var ua = req.headers['user-agent'];
        redisStore.zadd('online', Date.now(), ua, next);
});

app.use(function(req, res, next){
        var min = 60*1000;
        var ago = Date.now() - min;
        redisStore.zrevrangebyscore('online', '+inf', ago, function(err, users){
                if(err){
                        return next(err);
                }
                req.online = users;
                next();
        });
});

app.get('/', function(req, res){
        var usercount = req.online.length + ' users online';
        res.render('index', {title: "Test Title", useron: usercount});
});
app.get('/users', user.list);

http.createServer(app).listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});