Sends messages to each connected client by using redis and nodejs

This is a simple chat example.

• /config/initializers/redis.rb- Init redis
• /config/initializers/nodejs.rb- Starts nodejs server automatically when starting rails server
• /app/assets/javascripts/pushing.js - Client connect to nodejs and gets chat messages through socket.io
• /app/controllers/home_controller.rb - push method: pushes new chat message to a redis channel, in this example to channel user-1:notification
• /realtime/realtime-server.js - Nodejs server which is listening to a redis channel. If there are new chat message, they are broadcast to each client via socket.io.

If you have one redis channel for each user, you can switch this chat to a notification system. Set the redis channel something like user-{{ user-id }}:notification, {{ user-id }} must be replayed dynamicaly.