$config['fileJournal'] = isset( $config['fileJournal'] )
? FileJournal::factory( $config['fileJournal'], $name )
: FileJournal::factory( array( 'class' => 'NullFileJournal' ), $name );
+ $config['wanCache'] = ObjectCache::getMainWANInstance();
+
$this->backends[$name]['instance'] = new $class( $config );
}