How to store firebase instance id token? -

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is firebase token use sent specific device?

how store firebase token in mysql?

from google website, not mention length of token.

it seems long.

an instance id token identifies specific app on specific device. firebase documentation:

registration token - id generated fcm sdk each client app instance.

the instance id token indeed expires in few conditions. documentation:

the registration token may change when:

  • the app deletes instance id
  • the app restored on new device
  • the user uninstalls/reinstall app
  • the user clears app data.

the token relatively long string. since you're unlikely search it, i'd store in in text field in database.


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