title: EventListener for Object removed from memcached
body: <p><br>
  i am using memcached server to store some object with different expire times, is there some way to add event listener on removal or expiration of that object?
  Currently i'm using spymemcached client.<br>
  How can i achieve that i do some cleanup just before my object is deleted/expires.
  <br>
  Thanks</p>