public static function __callStatic($method_name, $arguments)
{
$params = array('scheme' => 'tcp', 'host' => '127.0.0.1', 'port' => 6379);
if (!static::$client) {
static::$client = new \Predis\Client($params);
}
return call_user_func_array(array(static::$client, $method_name), $arguments);
}