title: Java fail-over framework/library
body: <p>Is there any framework/library that takes care of active/passive failover? Ideally it should be fast, lightweight and embeddable. I've found a few but they don't quite fit the criteria... </p>
  
  <ul>
  <li><a href="http://zookeeper.apache.org/" rel="nofollow">http://zookeeper.apache.org/</a></li>
  <li><a href="http://sourceforge.net/projects/jheartbeat/" rel="nofollow">http://sourceforge.net/projects/jheartbeat/</a></li>
  <li><a href="http://www.javaworld.com/javaworld/jw-03-2002/jw-0315-heart.html" rel="nofollow">http://www.javaworld.com/javaworld/jw-03-2002/jw-0315-heart.html</a></li>
  </ul>