/**
* 获得 Redis 连接
*
* @return Redis
*/
public static function getConnection()
{
if (self::$_connection === null && CACHE_STATUS === true) {
$redis = new Redis();
$redis->connect(REDIS_CONNECT_ADD, REDIS_CONNECT_PORT);
self::$_connection = $redis;
}
return self::$_connection;
}
