Really? I'd imagine most Ember projects are more like Gmail than Bustle (in the sense that they probably have at least login). If even a single byte of the payl

Really? I'd imagine most Ember projects are more like Gmail than Bustle (in the sense that they probably have at least login). If even a single byte of the payload changes, you're looking at O(n=users) instances and then you're potentially back at the problem of having the db hit happen before the first pixel on screen.