So a monolith application gets ported to microservices from an interpreter based version of Ruby to a compiled version of Go and the author is surprised about the gains.

Why do people keep getting amazed about the performance they get when using native code in their applications instead of a naive interpreter?

Not bashing Go, the title could be "From a Ruby monolith to microservices in <pick your language with native compiler available>".

Hey, this could probably even be possible in Ruby, if something like RubyMotion was generally available.