title: Passing values between processors in apache camel
body: <p>In apache camel, which of those is the best way to pass values from an exchange processor to another (and why) :</p>
  
  <ul>
  <li>storing it in the exchange headers</li>
  <li>using the <code>setProperty</code> method while building the route.</li>
  <li>another way..</li>
  </ul>