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JGroups is a Toolkit for Reliable Multicast Communication

JGroups supports most standard protocols in mutiple formats including:

  • Transport protocols: UDP (IP Multicast), TCP, JMS
  • Fragmentation of large messages
  • Reliable unicast and multicast message transmission. Lost messages are retransmitted
  • Failure detection: crashed members are excluded from the membership
  • Ordering protocols: Atomic (all-or-none message delivery), Fifo, Causal, Total Order (sequencer or token based)
  • Membership
  • Encryption