I was looking for a pet project to try out recent additions to https://vercel.com platform, specifically their PostreSQL and Redis offering. They also provide easy to setup wildcard subdomain HTTPS certificates, and since I had yo.link domain lying around for a while, why not use it to create, yes, yet another, URL shortening service, but with a twist... Putting the user-selectable short-code in the subdomain has the advantage that it is the first thing that users read in a URL, and as such it is an opportunity to provide some contextual information about the link. Here are some…