Yes, I hope that realtime apps will be our future :)
Regarding integration - okdb provides hooks, so that you can implement custom authentication/verification, e.g. verify JWT token. For details, have a look at the docs here - https://okdb.io/p/docs/api/server#s5.1
getting downvotes... probably because my comment sounds like it should not be important, that's not what I mean.
There are database products like MongoDB with closed source. I was curious about the author's reasoning in this particular case. E.g. apart of transparency and community contributions, etc