To be clear, I am not suggesting Go specifically, although it is certainly a very good choice and the article this thread is linked to makes its own good argume

To be clear, I am not suggesting Go specifically, although it is certainly a very good choice and the article this thread is linked to makes its own good arguments in favor of Go. Java 8 also has some very high-productivity modern web application frameworks, as do several other high-performance platforms. I generally advise selecting anything within the top third—what I loosely call the high-performance tier—of our benchmarks project. There are a bunch of options there, Go included. Making a platform selection that is informed, in part, on the language/platform's performance is a reasonable thing to do. As long as you can be equally productive (or even if you are a little less productive) with a high-performance platform, you will likely endure less pain during the initial several months once your system goes live and considerably less pain over the long haul. Plus, it's really great to have a wicked-fast web app with very little performance-tuning effort.