title: How to invalid cache when using ListGrid and Datasource
body: <p>As per what I found reading other sites :</p>
  
  <p>SmartGWT uses data caching to optimize client-server connections and reduce network traffic. In your example, let's say you have the following in your database:</p>
  
  <p><strong>one word</strong></p>
  
  <p><strong>two words</strong></p>
  
  <p><strong>one sentence</strong></p>
  
  <p>When you type word, the fetch returns:</p>
  
  <p><strong>one word</strong></p>
  
  <p><strong>two words</strong></p>
  
  <p>These values are cached in your client.</p>
  
  <p>When you add one to word, because this is a more restraining search criteria, no need to server fetch, only client filter and the result is:</p>
  
  <p><strong>one word</strong></p>
  
  <p>Is there a way of avoiding this and make the search always against the server?</p>