During the time that it is held , the sch - m lock prevents concurrent access to the table 保持该锁期间, sch - m锁将阻止对表进行并发访问。
It is often useful to allow a limited number of threads concurrent access to a resource 允许有限数目的线程并发访问某个资源通常十分有用。
Applications characterized by real time highly concurrent access , with short duration transactions 以实时高并发访问为特征且具有持续时间较短的事务的应用程序。
Your applications must be prepared to support multiple concurrent access by users with differing locale requirements 应用程式必须做好准备,支援具有不同地区需求的用户的多个并发存取。
To avoid performance issues , it is necessary to simulate numerous concurrent access to your website to see how it reacts - before releasing it 为了避免性能问题,必须模拟对网站的并发操作,看看反应? ?在发布前进行。