Comment by lovedswain

The biggest difficulty I've experienced is "librification", where some common code ends up in a little library, and soon that library is not so little any more, and not long after starts to look like half of every service. I can maintain discipline when working on small systems alone, but on a team there will always be one lazy person or urgent need which means eventually some shared component gains enough gravity to start sucking code out of their nice isolated homes

Giving up and dumping everything into a monorepo, that's not going to help at all. At that point probably better off just giving up any hope of carefully split up and individually managed services