RE: If durable subscriber is listening, what will happ...
Just Publisher sends the message to the subscriber but the publisher cann't wait for confirmation or acknowldgement.And subscriber can get the multiple messages but there is no reliable of delivering the message.
RE: If durable subscriber is listening, what will happen if a publisher adds a message to factory ?
Nothing will happen to durable subscriber hence publisher can add n number of messages the fact is as soon as message is deployed in application server the registered subscriber only able to listen the message or else he will be continuing with the previous message.