Plot twist: Newly-hired head honcho of software was going to fix it all with Kubernetes. Peak transaction volumes of about ten per minute.
Once the project ended, I never looked back and wiped all but the essential lessons from memory.
I can't name them because my brain legit refuses to look up the name. I know it's there somewhere in the periphery. And even if it did pop back, it shall remain nameless, for harm could come to many innocents.