Implementing the Firebase API is nontrivial. It's an entire datastore with fine-grained monitoring and optimistic, distributed, data synchronization. Messagin

Implementing the Firebase API is nontrivial. It's an entire datastore with fine-grained monitoring and optimistic, distributed, data synchronization. Messaging falls automatically out of their API -- all you do is push child messages. And it's better messaging protocol than pub/sub since you get windowed queries into the channel history for free.