realtime get requirements

[Matteo Grolla]

Hi,
    can you confirm me that realtime get requirements are just:

<!-- realtime get handler, guaranteed to return the latest stored fields of
       any document, without the need to commit or open a new searcher.  The
       current implementation relies on the updateLog feature being
enabled. -->
  <requestHandler name="/get" class="solr.RealTimeGetHandler">
     <lst name="defaults">
       <str name="omitHeader">true</str>
       <str name="wt">json</str>
       <str name="indent">true</str>
     </lst>
  </requestHandler>

    <updateLog>
      <str name="dir">${solr.ulog.dir:}</str>
    </updateLog

and that it works with any directory factory? (Not just
NRTCachingDirectoryFactory)