Suppose I spend some credits to buy some new accessory for my avatar, and then put n that accessory. My credits balance updates. My inventory updates. My avatar product set updates. My profile picture updates. The "sold count" of the product in question updates. All of these pieces of data will be available in real time to whomever is interested in them at the time. If we did this with RPC, everything would have to know about everything. As it is, updates to any subset of the live graph is available to anyone who views it. You can try it at m.imvu.com

Also, messaging, decoration, online status, ... Lots of data could, and should, be real time! The cool thing is that it all is deployed and works at IMVU scale.

Apologies for typos - phone auto correct.

Hi, I'm an engineer at IMVU. We use this for almost everything! Status updates is a pretty simple example but we constantly invalidate data for things such as user's list of friends, credit balance, and our real-time chat.

Pretty much any and all data can be cached locally. Any modern application running in a web browser will have state that can change external to the application.