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ActiveCluster is an API for writing cluster-based distributed systems. It is a simple API which reuses a few of the standard JMS APIs for Message, Destination, MessageListener and adds a few simple interfaces for working with clusters.

ActiveCluster is a simple API which is easy to implement on top of any networking library. It can be used to build a variety of different network protocols like...

  • buddy-groups for Web based or EJB based session replication
  • master / slave protocols for hot-standby protocols
  • controller-voting protocols to elect a single node in a cluster to be the controller along with defining who will be the next node if the controller falls over as well as detecting the loss of the controller
  • distributed lock manager

The default implementation uses JMS though we should be easily be able to add other implementations further down the line, like a JGroups implementation etc


I'm pleased to announce the 1.0 release of ActiveCluster, the open source cluster management & control framework.

This release completes the core API and reference implementation which includes the following features

  • viewing the current nodes in the cluster and their state
  • listening to nodes arrive, update their state, shut down or fail
  • communicate with the cluster as a whole or with any specific node in the cluster
  • elect a leader of the cluster to make decisions on behalf of the cluster

Future versions will include more complex higher level protocols like buddy-group arrangement protocols and HA features.

To download the binary or source versions of this release, please view the download page

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