JMS队列消息接收顺序

Question

我按顺序在同一目标中添加两条 JMS 消息。这两条消息的接收顺序是否与我添加它们的顺序相同，或者是否有可能进行相反的排序，即首先检索目的地中首先接收到的消息。

我添加到目的地的方式是：

producer.send(Msg1);
producer.send(Msg2);

Msg1 和 Msg2 将在所有情况下按顺序添加（例如网络故障和延迟等）？

Answer 1

不保证消息排序（且规范未强制要求）和总计JMS 消息排序详细解释了原因。另请参阅 StackOverflow 帖子如何处理消息顺序在 JMS 中？。

Answer 2

根据 JMS2 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.

，

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.

为了回答您的问题，消息将按照与上述信息一起发送的顺序接收。然而，消息传递到服务器的顺序将受到消息优先级、持久/非持久等限制的约束。