public function get_navigation($cityid, $html_id) { APF::get_instance()->benchmark_begin(__CLASS__ . " get_navigation "); $key = Util_MemCacheKey::get_myanjuke_navigation($cityid); $memcache = APF_Cache_Factory::get_instance()->get_memcache(); $list = $memcache->get($key); // $memcache->delete($key); if (!$list) { $list = parent::get_html_content($cityid, $html_id, $key); $memcache->add($key, $list, 0, Util_MemCacheTime::get_myanjuke_navigation()); } APF::get_instance()->benchmark_end(__CLASS__ . " get_navigation "); return $list; }