title: No route exception - Java, memcached
body: <p>Few days ago i found exception in catalina log file:</p>
  
  <blockquote>
    <p>I/O error: No route to host; nested exception is
    java.net.NoRouteToHostException: No route to host</p>
  </blockquote>
  
  <p>it's connection to memcached.</p>
  
  <p>Do you have any ideas, that can it be, and how to avoid it?</p>
  
  <p>I was looking for solution, but i have no idea, what happened.</p>