Fwiw we have a relatively large Scala codebase that's exceptionally bug-free, performant.and easy to modify and haven't had to reach for a lot of the extremely

Fwiw we have a relatively large Scala codebase that's exceptionally bug-free, performant.and easy to modify and haven't had to reach for a lot of the extremely abstract FP patterns that warrant the most blog posts. Simple immutability, garden variety monads (IO, Either, Option) get you a long way and are simple to understand.