title: Firebase Prevent Alphabetically Ordering
body: <p>I want to create a structure that provides me adding likes to my profile's likes node. However i try to use this link to add post's key to my likes node but when i add old post to my likes node it does not add to the end. it adds automatically by alphabetic order. i don't want this. i want to add posts' key by like-date.</p>
  
  <p><a href="https://github.com/firebase/FirebaseUI-Android/blob/master/database/README.md#data-model" rel="nofollow noreferrer">https://github.com/firebase/FirebaseUI-Android/blob/master/database/README.md#data-model</a></p>
  
  <pre><code>{
    "data": {
      // This order doesn't matter, the order is taken from keys/(user1 or user2).
      "3": true,
      "1": "some data",
      "2": 5
    },
    "keys": {
      // These two users have different orders for their data thanks to key side ordering.
      "user1": {
        "1": true,
        "2": true,
        "3": true
      },
      "user2": {
        "3": true,
        "2": true,
        "1": true
      }
    }
  }
  </code></pre>
  
  <p>First i like "3" and then i like "2" and "1" but it does not show like the structure above. it shows like this</p>
  
  <pre><code>"user2": {
            "1": true,
            "2": true,
            "3": true
  </code></pre>
  
  <p>but i want it to look like below.</p>
  
  <pre><code>"user2": {
            "3": true,
            "2": true,
            "1": true
  </code></pre>