title: Save data from Firestore localy
body: <p>What is the best way to save data(after fetching it from Firestore) locally? </p>
  
  <p>I don't want to reload it one more time, but only get updates. Now, I have to reload data every time when open fragment with the news. Now all working but it irritates me when reloading appears. </p>
  
  <p>I'm using <code>onSuccessListener</code> and <code>OnCompleteListener</code></p>
  
  <pre><code>ref.get().addOnSuccessListener(new OnSuccessListener&lt;QuerySnapshot&gt;() { ... }
  </code></pre>