title: Is there any open source framework that can provide a update service?
body: <p>I provide a web service, but sometimes I need to update my web service. When i update the source code, i need to stop the service, then install the new service package. </p>
  
  <p>Here is the problem:</p>
  
  <p>1 I really don't want to stop the service when updating</p>
  
  <p>2 I just need to update some specific features. But now I have to update the whole package. This makes the updating process long and heavy.</p>
  
  <p>I think EJB would be a solution. But i need more advice.</p>
  
  <p>Any advice is appreciated</p>