YAUS, Yet Another URL Shortener, was first written in Python3 using the Flask web framework, and deployed in Heroku: https://yaus.dev. The code of that version can be seen here: https://github.com/maitesin/yaus/tree/e938b0d218849f50df7ab5a4a46923faf235762b. However, the project has been rewritten in Go and I have applied some Domain Driven Design (DDD) and Command Query Segregation (CQS) patterns.
The purpose of this project is for me to tinker and practice some development methods or design I want to test. It also helps me keep up to date with the Heroku platform.