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I have over 100,000 existing FCM registrations on my notification hub. How can I migrate them efficiently to FCMv1? While considering using GetAllRegistrationsAsync to retrieve and re-register them, I'm concerned about its efficiency. Are there any better approaches for handling a large number of registrations? In my case reregistering it from client side is not an option it must be done on server using azure function or so
There is a detailed migration article for Google Firebase Cloud Messaging, already available in the learn portal. You can use that article as a base for migrating FCM to FCM V1.
https://learn.microsoft.com/en-us/azure/notification-hubs/firebase-migration-sdk
Hope this helps
@Sreeju Nair Thanks for your response, I have already read this doc but couldn't find where they mention how to update existing FCM registrations to FCMv1 ,Do we have to collect every registrations with GetAllRegistrationsAsync and reregister it to FCMv1 like I mentioned in my question ?
Yes, you need to get all registrations and loop it and update the platform parameter.
see a good read below
https://github.com/MicrosoftDocs/azure-docs/issues/120455#issuecomment-2045180423