XMPP has pubsub nodes, which in practice can be used as a general key-value datastore with a push when a key is updated. So it can be done, but at this point it

XMPP has pubsub nodes, which in practice can be used as a general key-value datastore with a push when a key is updated. So it can be done, but at this point it will only be the same functionality with a different API. It doesn't make a lot of sense.