where can I find a revised and updated demo/tut for something like Rails3.1.2 "polling-for-changes"

Question

where can I find a revised and updated demo/tut for something like Rails3.1.2 "polling-for-changes" like this great but not updated screencasts: http://railscasts.com/episodes/229-polling-for-changes?view=asciicast ?

Answer 1

Polling is 2010. You should look into websockets instead. I suggest socket.io, which will automatically degrade to Long-Polling if necessary.