$cache = ObjectCache::getMainWANInstance();
$textId = $this->getTextId();
$key = wfMemcKey( 'revisiontext', 'textid', $textId );
$cache = ObjectCache::getMainWANInstance();
$textId = $this->getTextId();
$key = wfMemcKey( 'revisiontext', 'textid', $textId );