The observer object subscribes to events that report any state changes in the monitored entity, and then updates its own state based on information in those events.
观察器对象订阅那些报告所监视实体中任何状态更改的事件,然后基于那些事件中的信息更新自己的状态。
2
These services are monitored during the manage phase for timely responsiveness for different service requests, detecting failures at service levels, and restoring the operational state of the system.