title: AngularFire/Firestore Using maximum backoff delay to prevent overloading the backend
body: <p>Today after a simple deploy for adjusts (without install new features) my angularfire application stay lot delay. When checked the console log see this message, in login screen, without any operation or request.</p>
  
  <p>Somebody can give some trick?</p>
  
  <pre><code>Firestore (4.9.0) 2018-05-22T22:05:09.569Z: FirebaseError: [code=resource-exhausted]: Quota exceeded.
  Firestore (4.9.0) 2018-05-22T22:04:17.606Z: Using maximum backoff delay to prevent overloading the backend.
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/wwOT5.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wwOT5.jpg" alt="enter image description here"></a></p>