To be honest, I'm surprised that Go is only twice in fast - typically compiled languages are ten times faster than interpreted ones.

However, performance is rarely the issue in web services. I'm not a big fan of JavaScript, but it works, there is just a huge ecosystem for it, it gets the job done, and a lot of people know it well.

(Also, the compilation phase in compiled language is really slows down development.)

Thanks for a thought-provoking article!