function getAllScoreCityRank($cityid, $limit)
{
$key = 'get_all_score_city_rank_cityid_01_' . $cityid . $limit;
APF::get_instance()->benchmark_begin(__CLASS__ . $key);
$memcache = APF_Cache_Factory::get_instance()->get_memcache();
$value = $memcache->get($key);
if (!$value) {
$value = parent::getAllScoreCityRank($cityid, $limit);
$memcache->add($key, $value, 0, 21600);
//6小时
}
APF::get_instance()->benchmark_end(__CLASS__ . $key);
return $value;
}
