Just a few simple tutorials …
My understanding of Distributed Replicant Manager (DRM) is that it allows you to attach some serialized data (stub) to a cluster node and manage it. Examples of this data include the list of stubs for a given RMI server. Each node has a stub to share with other nodes. The DRM enables the sharing of [...]
Posted by Alexander Zagniotov in: clustering, jboss, management beans on May 31st, 2008 17:37
Did you know that if you have a JBoss cluster, HA singletons service beans on each can share a common memory state? State is a memory space shared by all HA singletons service beans in a cluster. It is possible save an object to the state using HA singleton service bean on one node, and [...]
Posted by Alexander Zagniotov in: clustering, jboss, management beans on May 16th, 2008 23:15
If you want to know how many nodes there are in the current cluster partition, all you have to do is to ask HAPartition for the node list. HAPartition represents your cluster partition, and it contains all the information you need to know about your cluster and the nodes: their host names, IPs, position in [...]
Posted by Alexander Zagniotov in: clustering, jboss, management beans on May 14th, 2008 18:36
Have you ever dealt with clustered singleton service? How to determine which cluster node is the master? Well, if I am the current node, I can simply ask whether I am the master or not. But what if I already know that the current node is not the master, and I want to determine which [...]
Posted by Alexander Zagniotov in: clustering, jboss on May 8th, 2008 19:22
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