Big thanks to Mariano Lopez for his well-structured series on setting up a bootstrapped Spring project with kotlin to handle restful requests.
This guy definitely deserves your sub
series url: https://www.youtube.com/channel/UCoZWcpl5DCqmYmjTc3ajmnA/videos
original code: https://github.com/MarianoLopez/SpringKotlinBuildingRestApiTutorial/tree/feature/real-db