Wpf xaml继承(Wpf xaml inheritance)

 
 
 “并且每次订阅者启动时他都会收到所有消息，如果我继续发送相同的消息，我的消费者将获得” 
 
 
 正如项目自述文件中所述 
 
 
 
 “最后一次价值交换就像直接交换” 
 
 
 所以这是预期的行为。 
 
 与直接交换的唯一区别在于，lvc交换机跟踪每个路由密钥的最后消息，因此当新队列与具有特定绑定密钥的交换机绑定时，最后一条消息以等于路由密钥的方式发布到交换机绑定密钥（存储在缓存中）被发送到新添加的队列。 
 
 要理解，您可以更改生产者代码，以便在第一个消费者与您的交易所绑定时只发送一条消息。 然后使用相同的绑定密钥将第二个使用者绑定到您的交换机，即使您的生产者不发送任何新消息，第二个使用者将获得与第一个使用者相同的消息，因为它已被lvc交换缓存。 

 
 
"and everytime that the subscriber is up he receives all the messages, and if i keep sending the same message my consumer will get"
 
 
as stated in the readme of the project 
 
 
 
"The last value exchange acts like a direct exchange"
 
 
so this is the expected behaviour.
 
The only difference with a direct exchange, is that the lvc exchange keeps track of last message for each routing key, so when a new queue is bond to the exchange with a specific binding key, last message published to the exchange with a routing key equal to the binding key (which was stored in cache) is sent to the newly added queue.
 
To understand, you could change your producer code to send only one message once a first consumer is bond to your exchange. Then bind a second consumer to your exchange, with same binding key, and even if your producer do not send any new message, the second consumer will get the same message than the first consumer, since it has been cached by the lvc exchange.