Sure, Lingxian. I have never negated that.

To make sure I was not misunderstood, I will rephrase myself.

Any kind of work requires effort which consists of human-spent time.

If we are well-aware that MongoDB is not the best solution, the same time might be better spent integrating something else.

Still, from my point of view, having Monasca as the backend is enough of a solution to the main issue in this thread which is Gnocchi not being maintained any longer.