rposener

Do changes get batched on the controller, like RIA Domain Services, or does each action (Put, get, post, delete) commit their changes individually? I am assuming this is the case, since they are all separate requests.

You can choose to save your changes to your online upshotcontext immediatelly (default). Or in bulk. Check the video of steve sanderson on SPA http://channel9.msdn.com/Events/TechDays/Techdays-2012-the-Netherlands/2159 at about 30:00

It is the "buffersettings" attribute on the HtmlHelper of the UpshotContext that adjusts this default behavior.