[speedgoose]

The current architecture is not designed to be horizontally scalable. You need one big primary database node. That works well if you are willing to optimise a lot, see the one example: stackoverflow. But it requires a lot of efforts and cannot scale that much.

One could probably create a new implementation that scale though.

[losteric]

I'm very new to the project. Do you happened to know if the software architecture is inherently coupled to that physical tech choice (one big postgresql)? I have seen some well architected RoR apps sidestep that limitation, but they seem to be the exception.