We don’t know that the author didn’t google and try a few things. And it’s perfectly possible to be a computer scientist and not know how to tune a web server.

We don’t know that the author didn’t google and try a few things. And it’s perfectly possible to be a computer scientist and not know how to tune a web server. There are lots of specialisms and paths. Personally I admire someone who, despite being an expert, isn’t afraid to ask questions and admit when they don’t know something.