Just a quick question about what is better and differences between GlobalScope and withContext(NonCancellable) on Android Is there any advantage / problem with one of those functions? Typical use case would be using proper scoped context in an Activity, but wanting that a coroutine that write something to the DB is not cancelled at the end of the activity. Or maybe there's another alternative?

IMHO,

GlobalScope

better describes intent here (of a separate non-scoped background process)

The final plan is to use a workerpool for that to also limit concurrency but I'm still having issues with that https://github.com/Kotlin/kotlinx.coroutines/issues/830#issuecomment-441619668. But thanks for confirming that GlobalScope can be used for such needs, docs have plenty of don't use it 🙂