Setup Redis as Node.js Express Session Storage

app.coffee

express = require 'express'
RedisStore = require('connect-redis')(express)

# Heroku redistogo connection
if process.env.REDISTOGO_URL
  rtg   = require('url').parse process.env.REDISTOGO_URL
  redis = require('redis').createClient rtg.port, rtg.hostname
  redis.auth rtg.auth.split(':')[1] # auth 1st part is username and 2nd is password separated by ":"
# Localhost
else
  redis = require("redis").createClient()

# Create express application
app = module.exports = express.createServer(
  express.cookieParser(),
  express.session
    secret: process.env.CLIENT_SECRET or "super secret string"
    maxAge : new Date Date.now() + 7200000 # 2h Session lifetime
    store: new RedisStore {client: redis}
  express.query()
)