We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#3555 - New block 'defer' mode based on Facebook's BigPipe
It might be that HTTP preloading can remove the need for this - by putting out preload headers for the deferred AJAX requests, meaning the HTTP/2 server will automatically push the results of those requests.
I'm not sure if something would need changing regarding HTTP caching for those requests - i.e. will a non-cachable request done early be valid for the current page render.
I'm not sure if something would need changing regarding HTTP caching for those requests - i.e. will a non-cachable request done early be valid for the current page render.