[bagosm]

This is very nice! A question though: it does need a knowledge of client state right? How big is that data per session? Is it viable to keep the data on client and send with each request via a cookie so that you don't need more server resources?

[jlongster]

Which client state? The only penalty is that the server needs to send a "payload" of data to the client on the initial rendering, which is all the data that the server used to render the initial HTML. Once the client picks up this payload, from then on it just uses normal REST patterns to query APIs for data.

You may need a session for authentication, but that's it.