Well, I need to write a server if my requirements don’t fit a server side rendered application and/or my usecase does not fit the absolutely anemic performance

Well, I need to write a server if my requirements don’t fit a server side rendered application and/or my usecase does not fit the absolutely anemic performance of Rails, which also applies when using it only for an API (it’s not Ruby’s fault btw). The classic response is “zomg premature optimization bad”, but some of us work on more complex applications than simple database CRUD.