How to handle multiple Firebase FCM tokens for each user?

Question

From the official documentation, I understand that the way it works is something like this:

• User installs application, FCM token
• Sending a token to the application server
• The server uses the token to send push notifications to this device.

What if this user installs the application on another device at the same time - should I store several tokens for each user on the application server? If so, then it should be something like checking which ones expired?

Answer 1

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Answer 2

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, (onTokenRefresh() Android), token , /.