title: ExtJS 4.2 : Load single item from remote store
body: <p>So say I have a store and that in my DB I have 20,000,000 rows. (aka enough so that I have setup pagesize so that I only get back 100 rows per page). Since I have pagesize set, when I do the original call I only get 100 items back. Thus the following returns null:</p>
  
  <pre><code>Ext.getStore('MyLargeStore').getById(200); // returns null
  </code></pre>
  
  <p>This makes sense to me since technically the store in the JS side doesn't have that particular id set. But is there anyway to do a force lookup if that id doesn't exist? From what I can tell I've already done everything 'remote' and 'auto' that needs it in my store:</p>
  
  <pre><code>Ext.define('MyApp.store.MyLargeStore', {
  extend: 'Ext.data.Store',
  
  requires: [
      'MyApp.model.MyLargeModel'
  ],
  
  constructor: function(cfg) {
      var me = this;
      cfg = cfg || {};
      me.callParent([Ext.apply({
          autoLoad: true,
          autoSync: true,
          model: 'MyApp.model.MyLargeModel',
          remoteFilter: true,
          remoteSort: true,
          storeId: 'MyLargeModel',
          buffered: true,
          pageSize: 100
      }, cfg)]);
  }
  });
  </code></pre>
  
  <p>Is there anyway to make it pull from the remote server whenever an id doesn't exist? I can't seem to find a method in the docs (unless I'm missing it since their docs are a little hard to decipher sometimes =/)</p>
  
  <p>Also, I assume you can always do a load on the store, but I'm pretty sure if I load just that 1 row then all other locations where that store is being used will also only have that row (which I don't necessarily want) So theoretically would creating a store on the fly be my only option? Seems like there should be an easier way hence why I figured I'd ask. there must be some better way rather than creating a store and then grabbing the record from that new store...</p>