Hilariously enough, just today I read a blog post about a service where the client interacts with the database directly - https://clickhouse.com/blog/building-a-paste-service-with-clickhouse. While it’s not your traditional OLTP database, it still kinda fits.

May I suggest avoiding recursive functions where possible? They are usually the ones overflowing your stack, duh.

It’s just an euphemism, “DRM / License check” = “disease”.