heroku node web app skeleton with scalable webserver, rss, and websockets

gistfile1.txt

var MONGO_URI = process.env.MONGOLAB_URI || 'mongodb://127.0.0.1:27017/test';
var PORT = process.env.PORT || 8000;
var url = require('url');
var REDIS_URI = url.parse(process.env.REDISTOGO_URL || "redis://dev:[email protected]/");
var express = require('express');
var sio = require('socket.io');
var rss = require('rss');
var RedisStore = require('connect-redis')(express);

var redisAuth = REDIS_URI.auth.split(':');
var redisStore = new RedisStore({
  host: REDIS_URI.hostname,
  port: REDIS_URI.port,
  db: redisAuth[0],
  pass: redisAuth[1]
});

var app = express.createServer();
app.set('views', __dirname);
app.set('view engine', 'jade');
app.use(express.logger());
app.use(express.limit('5kb'));
app.use(express.bodyParser());
app.use(express.cookieParser());
app.use(express.session({ 
  secret: process.env.SESSION_KEY || "takeonlywhatyouneed",
  store: redisStore}));
app.use(express.csrf());
app.use(require("stylus").middleware({
		debug: true,
    src: __dirname,
    dest: __dirname,
    compress: true
}));
app.use(function(req,res,next) {
	res.locals._csrf = req.session._csrf;
	next();
});
app.get("/foobar", function(req, res) {
  /* what you really do */
});
//config the rss feed
var feed = new rss({
  title: 'foo',
  description: 'bar',
  feed_url: baseUrl + '/rss.xml',
  site_url: baseUrl,
  image_url: baseUrl + '/logo.png',
  author: ''
});
var xml = feed.xml();
app.get("/rss.xml", function(req, res) {
  res.contentType("rss");
  res.send(xml);
});
app.use("/", express.static(__dirname));

//start the express http server
var httpServer = app.listen(PORT, function() {
  console.log("Listening on " + PORT);
});

//start the socketio server
var io = sio.listen(httpServer);
io.set("log level",2);
io.set('transports', ['xhr-polling']);
io.set('polling duration', 10);
//TODO: get redis store working for socketio, not scalable as is here