Customers are often broken into user groups to stagger the updates and reduce server loads and bottlenecks, particularly when many customers must receive the same updates.

• 特别是当很多用户必须进行升级时，用户经常被分成不同的用户组以将不同的用户组分配在不同的时间进行升级，并减小服务器的负荷与瓶颈。