I write super fast web applications and dev tools in PHP/Go/MySQL.
My GitHub account has lots of Go tools for things like MySQL live alter schema tools that don't mess with your triggers. https://github.com/BrianLeishman
Oh, and I have lots of MySQL UDFs written in C and Go (yes, Go!) and some other things in my gists. https://gist.github.com/BrianLeishman