【发布时间】:2014-02-12 11:47:11
【问题描述】:
您订阅了strictly ordered 的Websphere MQ topic 是否收到消息?
换句话说,以与queue 类似的方式,鉴于您的连接保持不变,您能否保证按照发送顺序接收topic 消息?
【问题讨论】:
标签: java messaging ibm-mq jms-topic
您订阅了strictly ordered 的Websphere MQ topic 是否收到消息?
换句话说,以与queue 类似的方式,鉴于您的连接保持不变,您能否保证按照发送顺序接收topic 消息?
【问题讨论】:
标签: java messaging ibm-mq jms-topic
根据 JMS 规范
JMS defines that messages sent by a session to a destination must be received
in the order in which they were sent. This defines a partial ordering
constraint on a session’s input message stream.
JMS does not define order of message receipt across destinations or across
a destination’s messages sent from multiple sessions. This aspect of a
session’s input message stream order is timing-dependent. It is not under
application control.
还有
Although clients loosely view the messages they produce within a session
as forming a serial stream of sent messages, the total ordering of this stream
is not significant. The only ordering that is visible to receiving clients is
the order of messages a session sends to a particular destination.
Several things can affect this order like message priority,
persistent/non persistent etc.
所以要回答您的问题,not really JMS provider specific 收到了哪些订单消息。它们将按照与上述信息一起发送的顺序被接收。然而,消息传递到服务器的顺序会受到消息优先级、持久性/非持久性等限制的约束。
【讨论】:
topic 以及queue,对吗?谢谢
Destination,它可以是Queue 或Topic。