I am trying to implement Firebase messaging service in my Application. The only use I make of firebase is to send data from my own created Web services and on the Android App side to receive these messages.
I don't use any other feature at all. I store the device token IDs on my own Database.
Suppose a million users have installed the App. Will there be any disruptions arising? I can't quite make out what the number of simultaneous connections means on the Pricing page. I am using the SPARK Plan.