private function clearCache($langCode)
{
$this->wg->Memc->delete($this->getCollectionsListCacheKey($langCode));
$this->wg->Memc->delete($this->getCollectionsListVisualizationCacheKey($langCode));
$visualization = new CityVisualization();
$corporateModel = new WikiaCorporateModel();
foreach ($this->getList($langCode) as $collection) {
$this->wg->Memc->delete($visualization->getCollectionCacheKey($collection['id']));
$title = GlobalTitle::newMainPage($corporateModel->getCorporateWikiIdByLang($langCode));
$title->purgeSquid();
Wikia::log(__METHOD__, '', 'Purged memcached for collection #' . $collection['id']);
}
}
