Firebase limit on the number of observers/listener

问题:

In Firebase, we can add an observer in iOS using something like observeEventType:withBlock:. Is there a limit on the number of observers that can be attached from one client ?

回答1:

There is no limit on the number of listeners that may be attached from one client. Also note that listeners are generally inexpensive, so it is recommended that you use them as most convenient in your application.