title: Firebase simultaneous realtime connections to my database
body: <p>I have the free plane in Firebase - I have 100 simultaneous realtime connections.
  But I didnt understand one thing:
  Now, No one connected to my app, and in Firebase - It is written that I have 3 connection. What that mean?
  I have 100 connections in general or maximum 100 simultaneous realtime connections?</p>
  
  <p>I would love someone to explain to me how it works.</p>
  
  <p>thanks</p>