text: -- 2021-07-22
  CREATE TABLE `_lock_store` (
     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
     `name` varchar(100) NOT NULL DEFAULT '',
     `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
     PRIMARY KEY (`id`),
     UNIQUE KEY `uni_name` (`name`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8;