I am considering using HAJMS with JBoss 3.2.6 and want to confirm that I understand the basic architecture for this configuration.
>From what I could read off the forum and other resources, I believe that HAJMS >works something like this: 1) The cluster is a group of nodes sharing their status with other nodes in the partition using JGroups UDP-Multicast. 2) There is a master node in the cluster that hosts the JMSProvider for the entire cluster. The JMSProvider will move to another node in the event that the cluster detects a master failure using JGroups. 3) A JMS client uses the HAJNDI to retrieve the ConnectionFactory for the current JMSProvider serving the cluster. 4) The master node in the cluster maintains all persistent JMS Messages through a central database. This database should not fail, since any node taking the role of master (in the event of a node failure) will connect to this database to continue processing JMS Messages. 5) HAJMS does not guarantee persistent messages. In other words, HAJMS only provides the framework for switching the JMSProvider in the event of a master node failure. It does not distribute persistent messages across all nodes in the cluster. The persistent messages are centrally located as described in Item #4. 6) In JBoss 4.0, this central server model has been modified so that all nodes in the cluster maintain their own JMSProvider, and these providers distribute messages using JGroups. My only request is that someone confirm that I have a basic understanding of HAJMS or please direct me to documentation that describes HAJMS at this conceptual level. Best regards, Tom View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3854522#3854522 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3854522 ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
