@erlend_sh Nice, I totally missed these topics while researching around meta… Learndiscourse seems like the exact same thing I want to achieve, I will take a closer look and probably take it as base. It seems like querying discourse periodically with the API is the way to go.
@Overgrow The advantages of being static is that you have much better performance and security. And actually, my content is not going to change so often (I think one rebuild every day will really be enough). Moreover I am not really fluent in ruby (agreed, syntax is simple, especially coming from python) and really not used to frontend development.
Edit: I started doing some bot periodic scanning/watching of the topics with a python scripts using the discourse API but I just stumbled over this topic:
It might be the exact thing I want: some server side hook watching for topic/posts edit events.