When I subscribe to a topic which doesn't exist.. why would it take a day long to apear in the Firebase Console ? would be created directly or after 1 day ? (Can I access it even when it's not shown in the console ? )
I have an application that uses push notifications so I will create a topic for every user in case he has more that one device or token was deleted. is there a good way to achieve this rather than topics ?
The topic is immediately created when a device subscribes to it, or a server app send data to it. But it indeed takes a few hours before tokens show up in the dropdown in the Firebase Notifications console.
来源：https://stackoverflow.com/questions/39181963/creating-fcm-topics-takes-a-long-time-to-show-in-console