So recently I had the opportunity to make a proof of concept (PoC) in the Go language to share with some fellow developers. They are mostly Java developers and therefore I decided to make the PoC a MVC style REST API that returns JSON with a single Entity for now.

I was going down an avenue of seeing if we could implement a better and easier caching for Docker registry utilizing Google Firestore.

I just wanted to find out if a directory was writable for the user, and it turns out it is quite difficult to get that information in Golang. How difficult could it be?