title: ServiceHostFactory.CreateServiceHost is called multiple time WCF
body: <p>I have a wcf service which hosted at IIS </p>
  
  <pre><code>&lt;%@ ServiceHost Language="C#" Debug="true" Service="MyService" Factory="InitializableServiceHostFactory" %&gt;
  </code></pre>
  
  <p>my problem is that the CreateServiceHost is called with each request to MyService method, which make my initialization code which is written in CreateServiceHost is called multiply.</p>