Maybe "Building Microservices", by Sam Newman. It's an architect-y point of view, but it's definitely got some examples of coupling-via-database and how to deal

Maybe "Building Microservices", by Sam Newman. It's an architect-y point of view, but it's definitely got some examples of coupling-via-database and how to deal with it. It may be that a monolith is just fine, nothing inherently wrong with monoliths in many cases. Not being able to change anything... less so.