android - Firebase / FCM notifications / TOPICS : How to copy all users on a certain TOPIC directly on FCM DB? -


we published android app firebase fcm notifications , had 100k+ registrations on fcm database. when tested notification on users takes hours process , it's hanging while (due 1000 limitations)

we noticed topics features on fcm more appropriate broadcasting notifications.

question : there way copy users newly created/implemented topic directly on fcm db without updating , waiting users download new app ?

thanks willy.

you don't copy tokens topic, subscribe them (i'm assuming wording wrong, figure might confuse others).

with said, use instance id api. subscribe token 1 one or using batchadd (see answer here).


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