It might be much less efficient per request than other popular languages, but it's stateless design, does at least prevent developers from using local memory ca

It might be much less efficient per request than other popular languages, but it's stateless design, does at least prevent developers from using local memory caches, which can prevent a number of problems from cropping up when scaling horizontally. With that said, I think the stateless nature of php is talked up too much. While not enforced by the nature of the language like php, writing stateless apps in other languages comes quite naturally. Scaling difficulties are almost always to do with the database solution rather than the app, and overcoming those problems has little to do with the choice of language.