Oops, sorry. When I saw this statement, I thought you wanted a message routed to a particular queue based on its priority.
"Put the messages with different priorities into different queues" If that is the case, then I think you can have the broker - using composite destinations and selectors - automatically route the messages to their respective queues based on their priority. Something similar to this pattern. http://www.enterpriseintegrationpatterns.com/ContentBasedRouter.html Joe Roger Hoover wrote: > > Thanks, Joe. > I'm not sure content-based routing would do what I'm looking for (maybe > you > can explain further). > > I'd like the same group of consumers to process messages with different > priorities but to give preference in the order of processing to higher > priority messages. > > On Feb 12, 2008 11:01 AM, ttmdev <[EMAIL PROTECTED]> wrote: > >> >> I would say the answer to your first question is 'yes'. >> >> Sounds like you're implementing a content-based routing pattern. >> >> If you can't use Camel to implement the pattern, then consider >> configuring >> the broker with composite destinations in combination with a selector to >> let >> the broker do the routing for you. >> >> Joe >> www.ttmsolutions.com >> >> >> >> Roger Hoover wrote: >> > >> > Thanks for the link, Joe. >> > So it looks like consumer priority is used by the broker to determine >> > which >> > subscriber to choose as the exclusive consumer? >> > >> > Does AMQ support message priorities? This ticket would suggest the >> answer >> > is no (http://issues.apache.org/activemq/browse/AMQ-122) >> > >> > Does anyone have any recommendations for achieving the semantics of a >> > priority queue? >> > >> > Here's what I was thinking of doing: >> > - Put the messages with different priorities into different queues >> > - Have the clients (STOMP is this case) subscribe to the various >> priority >> > queues >> > - The clients select() on all the sockets and when data is ready to be >> > read, >> > the client reads from socket of the highest priority queue. >> > >> > Suggests welcome. Thanks, >> > >> > Roger >> > >> > On Feb 12, 2008 5:36 AM, ttmdev <[EMAIL PROTECTED]> wrote: >> > >> >> >> >> Hi Roger, >> >> >> >> I'd disregard the consumer priority feature; it does not function as >> >> described in the consumer priority page. >> >> >> >> Here's the exclusive consumer web page. >> >> >> >> http://activemq.apache.org/exclusive-consumer.html >> >> >> >> Joe >> >> www.ttmsolutions.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> Roger Hoover wrote: >> >> > >> >> > I want to implement a priority queue (message delivery ordered by >> >> > priority) >> >> > and am trying to figure out what consumer priority means. >> >> > >> >> > After looking over the documentation ( >> >> > http://activemq.apache.org/consumer-priority.html) and these email >> >> > threads, >> >> > the semantics of consumer priority are still not entirely clear to >> me. >> >> > >> >> >> http://www.nabble.com/Consumer-Priority-on-AMQ-5.0-to14369093s2354.html#a14369093 >> >> > >> >> >> http://www.nabble.com/Using-different-consumer-priorities-in-the-same-connection-td14722765s2354.html#a14722765 >> >> > >> >> > - Does consumer priority control the order of message delivery or >> does >> >> it >> >> > influence which consumer messages get sent to? >> >> > >> >> > - If it controls delivery order, what effect does setting a priority >> on >> >> a >> >> > consumer have? It would seem like the priority should be set per >> >> message. >> >> > >> >> > - What does Hiram mean by "exclusive consumers"? Is this different >> >> from >> >> > each message being delivered to one and one only consumer? >> >> > >> >> > - What is the weighting algorithm for priorities? >> >> > >> >> > - What is the ballpark performance penalty for priority evaluation >> on >> >> the >> >> > broker? >> >> > >> >> > - Does the priority value have any particular significance other >> than >> >> > being >> >> > greater or less than other priority levels? >> >> > - Is there a maximum priority value? >> >> > - Does priority 0 have any special meaning? >> >> > >> >> > - Does the feature exist in AMQ 4.1.1? >> >> > >> >> > - Are there any gotchas when using it with STOMP? >> >> > >> >> > I appreciate any info anyone can provide. >> >> > >> >> > Cheers, >> >> > >> >> > Roger >> >> > >> >> > >> >> >> >> -- >> >> View this message in context: >> >> >> http://www.nabble.com/Priority-queue-semantics-of-consumer-priority-tp15427022s2354p15433256.html >> >> Sent from the ActiveMQ - User mailing list archive at Nabble.com. >> >> >> >> >> > >> > >> >> -- >> View this message in context: >> http://www.nabble.com/Priority-queue-semantics-of-consumer-priority-tp15427022s2354p15440134.html >> Sent from the ActiveMQ - User mailing list archive at Nabble.com. >> >> > > -- View this message in context: http://www.nabble.com/Priority-queue-semantics-of-consumer-priority-tp15427022s2354p15447735.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
