Optimistic synchronization of replicated objects in javascript

I'm programming a browser application (html5+websockets+css3+js preferred) that enables users to concurrently access (read, write) attributes of the same object. To create a real-time experience I'd like to use optimistic synchronization. I read about T开发者_高级运维imewarp and Trailing State algorithms and I wonder if there is a javascript library, which already implements these or similar algorithms.

I found this question, but unfortunately it was not answered yet. XSTM only supports pessimistic synchronization as it seems.

Do you have any idea for me?

I am working on a realtime HTML5 web browser application now too. Maybe my choice of weaponry could inspire you...who knows, so I am using: Frontend:

• KnockoutJS -it takes care of displaying data which I send to every connected client in JSON(view models), you can easily subscribe to changes in the client data and push the changes back to server, though I am having problems displaying pages with knockoutjs on mobile browsers
• on serverside I run custom made server based on Fleck
• Since JSON is my favourite data format, I ditched SQL databases in favour of [RavenDB][2], which stores data almost exactly as they are sent via websocket protocol and also it is pretty quick