jgroups

Toolkit for reliable multicast communication

JGroups is a toolkit for reliable multicast communication. (Note that this doesn't necessarily mean IP Multicast, JGroups can also use transports such as TCP). It can be used to create groups of processes whose members can send messages to each other. The main features include * Group creation and deletion. Group members can be spread across LANs or WANs * Joining and leaving of groups * Membership detection and notification about joined/left/crashed members * Detection and removal of crashed members * Sending and receiving of member-to-group messages (point-to-multipoint) * Sending and receiving of member-to-member messages (point-to-point) To use JGroups one needs: commons-logging.jar log4j.jar To run JGroups you need to have an XML parser installed on your system. If you use JDK 1.4 or higher, you can use the parser that is shipped with it. If you want to use the JGroups JMS protocol ( org.jgroups.protocols.JMS ), then you will also need to place jms.jar somewhere in your CLASSPATH. Place the JAR files somewhere in your CLASSPATH , and you're ready to start using JGroups.