某些服务通常需要管理数据的状态。

Some services typically need to manage data state.

youdao

这个用户常常是根用户(超级用户)，但是某些服务最好或必须作为服务的创建者运行。

More often than not, the user is root, the superuser, but some services prefer or must be run as a separate user created specifically for the service.

youdao

某些服务实现了更为高级的开放式并发形式；变更历史记录提供了那些算法所需要的原始值。

Some services implement more advanced forms of optimistic concurrency; the change history provides the original values needed for those algorithms.

youdao