> Ruby doesn't have built in concurrency like Go does Seriously. Pretty much all languages have support for concurrency via threads. Ruby even have the equival

> Ruby doesn't have built in concurrency like Go does Seriously. Pretty much all languages have support for concurrency via threads. Ruby even have the equivalent of channels since a decade: http://ruby-doc.org/core-2.2.0/Queue.html http://ruby-doc.org/core-2.2.0/Queue.html Now if you meant to talk about the GIL, well it prevent parallelism only for purely CPU bound tasks. And in the context of a web app, if I have a CPU bound tasks that I can just fire and forget, I don't want to execute it on my frontend server anyway.