AIUI unless your client is operating in an "auto-ack" mode, the client must "ack" each message it consumes to remove it from the queue.
This means that if you do not acknowledge the message, it will remain for the next client. Pretty simple and prevents a client reading a message then immediately crashing, losing the message forever. Topics are similar however the message is only acknowledges to prevent the same identified consumer receiving the same message more than once. I'm still joining the party on message queues so someone chip in if I'm wrong... :-) James On 1 September 2010 17:34, ChicagoBob123 <b...@bobfx.com> wrote: > > Thanks for the feedback! > I read this statement a couple of times from the link you sent and wondered > if > someone could elaborate further. > > "If a consumer receives a message and does not acknowledge it before closing > " > Closing what exactly? Closing the queue? The Session? > > The link also mentioned load balancing across consumers which seems exatcly > like what I am experiencing, but what does this flag > AcknowledgementMode.IndividualAcknowledge do for you then? > > Sorry I am so new and trying to get up to speed ASAP. > -- > View this message in context: > http://activemq.2283324.n4.nabble.com/Newbie-questions-on-NMS-or-CMS-ActiveMQ-consumers-puzzle-tp2403331p2403538.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. >
