private static function _CreateCacheInstance($cluster = 'default')
{
$cache_instance = new MemCache();
foreach ($GLOBALS['CONFIG_MEMCACHE'][$cluster] as $one) {
list($ip, $port, $weight) = explode(':', $one);
$a = $cache_instance->addServer($ip, $port, true, $weight, 1, 15, true, array('Memcache', 'FailureCallback'));
}
$cache_instance->setCompressThreshold(5000);
// > 5k then zlib
return $cache_instance;
}
