title: What happens if more than 100 users try to connect to Firebase spark plan
body: <p>I want to implement Firebase Cloud Messaging scheme to send notifications to clients. The Number of audience to my app is nearly 2000 and all of them might have active internet connection all the time</p>
  
  <p>Ii need to know what happens if such case occurs ie. all 2000 devices are online. </p>
  
  <p>If I send a notification,how many of them will be able to retrieve it.</p>