How to do live updating similar to Google Docs?

Question

I want to do something very similar to Google Doc\'s live updating - where all users can \"immediately\" see the actions of the other users in the doc.

To achieve this,

Answer 1

You could also have a look at ShareJS a Operational Transform libary and Derby which is a framework built on sharejs. They both have node.js backends - sharejs was written by a Google Wave engineer.