In case of errors the transaction can be rolled back leaving the database unchanged and the MQ message is sent back to the inputqueue.
在发生错误的情况下，该事务可以通过回滚使数据库恢复到更改前的状态，并将MQ消息发送回输入队列中。
2
Some back-end daemon process listening for messages posted to the inputqueue would receive the message and dispatch it to some piece of code capable of handling the message.
侦听发送到输入队列的消息的某个后端守护程序进程将接收此消息，并将其分派到可以处理此消息的某段代码。
3
The two methods demonstrate a scenario in which five messages are input to a messagequeue and the one with the highest priority is taken out of the queue and processed.