I am a student, in a recent study Activemq this message middleware, simple unidirectional message of what already understand, but I know those applications hosted platforms are also use Activemq to send messages to their application deployment, then when the platform use Activemq message after application deployment in the machine, if the machine side delete application, how to inform platform changes its status?

My guess:

1, activemq themselves what message synchronously or feedback I don't understand can deploy application state synchronization,
2, the developers set up again a platform from the machine to the passage, when machine application state change will send application status information back to the platform, so as to realize the synchronization of status update,

Please have or know of activemq familiar with specific implementation details of elder help me!

Salute!