Oooh, maybe I answered my own question: https://activemq.apache.org/components/artemis/documentation/1.0.0/message-grouping.html This looks like what I’m after. Any advice around its use?
John [rg] <https://www.redpointglobal.com/> John Lilley Data Management Chief Architect, Redpoint Global Inc. 34 Washington Street, Suite 205 Wellesley Hills, MA 02481 M: +1 7209385761<tel:+1%207209385761> | john.lil...@redpointglobal.com<mailto:john.lil...@redpointglobal.com> From: John Lilley <john.lil...@redpointglobal.com.INVALID> Sent: Thursday, December 7, 2023 11:58 AM To: users@activemq.apache.org Subject: Is it possible to route message to a specific consumer? *** [Caution] This email is from an external source. Please use caution responding, opening attachments or clicking embedded links. *** Greetings, We are in the process of transforming our Java-based services into Kubernetes-based microservice swarms with HA topology. So every service will have multiple instances. The good news is, AMQ supports this splendidly, because the message broker is very good about load-balancing between consumers and handling failed consumers. However, we have a few cases of “long running tasks” that a single service instance is responsible for. In those cases, we need to be able to route a request to a specific consumer instance. We could use specially-named queues for each consumer instance, but this seems awkward and hopefully not necessary. Is there any kind of “consumer affinity” that can be attached to a message, which directs the broker to select a specific consumer? If not, other ideas are certainly welcome. We are using OpenJDK 17 This is our maven dependency <dependency> <groupId>org.apache.activemq</groupId> <artifactId>artemis-jms-client-all</artifactId> <version>2.30.0</version> </dependency> Thanks John [rg]<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.redpointglobal.com%2f&c=E,1,PCllWqn1FN806xiChO-uNijPVawTv9Y3krF28r_sBUJsVHuM4SlcKCNVMTp_Qq94AnDC39XAs-pcWHhVnAPvZZRJbL8kXpIdP0TQ85wOYAroxX0px-0h_pKn&typo=1> John Lilley Data Management Chief Architect, Redpoint Global Inc. 34 Washington Street, Suite 205 Wellesley Hills, MA 02481 M: +1 7209385761<tel:+1%207209385761> | john.lil...@redpointglobal.com<mailto:john.lil...@redpointglobal.com> PLEASE NOTE: This e-mail from Redpoint Global Inc. (“Redpoint”) is confidential and is intended solely for the use of the individual(s) to whom it is addressed. If you believe you received this e-mail in error, please notify the sender immediately, delete the e-mail from your computer and do not copy, print or disclose it to anyone else. If you properly received this e-mail as a customer, partner or vendor of Redpoint, you should maintain its contents in confidence subject to the terms and conditions of your agreement(s) with Redpoint. PLEASE NOTE: This e-mail from Redpoint Global Inc. (“Redpoint”) is confidential and is intended solely for the use of the individual(s) to whom it is addressed. If you believe you received this e-mail in error, please notify the sender immediately, delete the e-mail from your computer and do not copy, print or disclose it to anyone else. If you properly received this e-mail as a customer, partner or vendor of Redpoint, you should maintain its contents in confidence subject to the terms and conditions of your agreement(s) with Redpoint.
