to not lose messages in such a situation, the system puts them on the hold queue.
为了在这种情况下不丢失消息,系统把消息放在持有队列中。
point your foot into the wall and place your big toe directly on the hold (left foot in photo below), resulting in a squared-off stance.
你需要把脚尖沖着巖壁并用大脚趾去接触脚点(如图左脚所示),这样就能自然形成一种蓄势待发的姿势。
messages on the hold queues may be a pointer that some of the runtime components of process server are not available or are not working correctly.
保留队列上的消息可以作为processserver的某些运行时组件不可用或无法正常工作的指示器。
messages on the hold queues are usually required for navigation of long-running business process instances to continue.
持有队列中的消息常常用于导航长时间运行的业务过程实例。