If you already can't serve your requests from one DB, and you already want to factor out the analytics stuff, the long running background queries, modularize th

If you already can't serve your requests from one DB, and you already want to factor out the analytics stuff, the long running background queries, modularize the spaghetti, scale the maintenance load, CI build + testing time, etc... That's what SOA and microservices is supposed to solve. At that scale you do reporting from a purpose-built service. Allegedly.