Yeah, mgmt (and more than anything, query tools) is gonna be a PITA. But looking at it in a different way, say building something like Google Sheets. One coul

Yeah, mgmt (and more than anything, query tools) is gonna be a PITA. But looking at it in a different way, say building something like Google Sheets. One could place user-mgmt in one single-threaded database (Even at 200k users you probably don't have too many concurrently modifying administrators) whilst "documents" gets their own database. I'm prototyping one such "document" centric tool and the per-document DB thinking has come up, debugging users problems could be as "simple" as cloning a SQLite file. Now on the other hand if it's some ERP/CRM/etc system with tons of linked data that naturally won't fly. Tool for the job.