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We published an android app with firebase FCM notifications and we had 100k+ registrations on FCM database. When we tested the notification on the users it takes hours to process and sometimes it's hanging for a while (due to 1000 limitations)

We noticed the TOPICS features on FCM that is more appropriate for broadcasting notifications.

Question : Is there a way to copy all the users to the newly created/implemented topic directly on FCM DB without updating and waiting that all the users download the new app ?

Thanks Willy.

WaMe
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1 Answers1

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You don't copy the tokens to a topic, you just subscribe them to it (I'm assuming that the wording is just wrong, but I figure it might confuse others).

With that said, you could use the Instance ID API. You could subscribe a token one by one or by using batchAdd (see my answer here).

AL.
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