I wonder if part of the confusion here is that “backend” is pretty overloaded. There are backends like API servers, and web server backends (which at Google they call “frontends”!)
I’d guess that Go is relatively more popular than Node for API servers, and Node is more popular for web servers.
And as you note, both are probably less popular than languages like Java and PHP.
I’d guess that Go is relatively more popular than Node for API servers, and Node is more popular for web servers.
And as you note, both are probably less popular than languages like Java and PHP.