[mastah88]

I don't know exactly how to name it but... Something along the lines of tutorials/courses how to make code for Error Handling (front/back), Defensive Programming, Observability, Tracing, Contexts/Stores at the Airbnb/Spotify/Basecamp level. That means, instead of hello world, show the best practices and all of the things that makes those things perform well, be maintainable.

[kulikalov]

I wrote a small guide on that: https://kulikalov.com/minimal-viable-logging

Not Spotify, but I have several decently loaded projects running with this setup for years.