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.
#2236 - Opportunistic scheduler and background caching
Actually it was possible to take some of the harshness off decaching, particular template decaching, by focusing on sometimes only decaching a subset of templates based on some scannable dependencies. Also, I was able to make the Admin Zone dashboard blocks use deferred loading, which makes it much faster to load due to parallelisation and not having to wait for the whole page to come at once.
And anything expired from any cache, regenerated.