什么是JBoss内部的消息？

Question

我无法在Jboss EAP 6中找到明确的飞行内消息定义。

Right now I am see that I have 4 messages stuck in-flight inside JBoss

如果我通过JMSToolBox连接到该队列，我看不到任何内容。只有在我重新启动jboss服务器后，它们才会在飞行中消失。

那么飞行中的消息究竟是什么？

Answer 1

在JMS术语中，在飞行中意味着已经发送但尚未发送的消息：

1. 已被自动确认，或
2. 得到客户承认，或
3. 已注册尚未提交的交易。

Answer 2

Messages "in flight" are messages that have already been delivered but not further acted on by the consumer.

Messages are considered in flight if they have been sent to a client but have not yet been deleted or have not yet reached the end of their visibility window.

Answer 3

简单地说，发送到消费者会话并且没有收到确认消息的消息数量。