I know a few people who work at a place where they stuffed all their databases on the same server, and all their systems just write to whatever database they feel like on that same server, share data via database, join data across databases etc. And they use upvoted cynical memes like this comment to justify their “architecture” because “microservices are a fad”.

So as one might expect - various automated reports and actions routinely fail with deadlocks and timeouts, any change anywhere has a pretty big chance of screwing some other distant part of another system, all services need full unrestricted access to all databases, and off course nothing can really be tested because you need to run practically every database and service on the same machine to even try to test.

Naturally the pace of work is glacial, and bugs are blamed on individual intellectual failing of lesser tenured developers not having the experience and the vast system trivia knowledge of “lifers” who secured their guaranteed employment this way.

You might even be those people for all i know.