Thanks for the insight @aixnr! We still recommend redis as the default storage engine, especially for small forums, as it was what NodeBB was originally built against. MongoDB is supported just as well as Redis, so there is no fear of it ever being deprecated or considered a second-class citizen when it comes to support.
As for those stats you were asking about:
139.08MB memory used in Redis
@julian It seemed pretty straight forward in my mind is the worst part.
Yup, I want this server to be this other server's pathetic little slave and take orders all day...Wha?.....It's rebelling!
It's hard to beat the incorrect logic of something you know absolutely should work as you're telling it to.