Semantically Reliable Multicast Protocols

  • Authors:
  • José Pereira;Rui Oliveira;Luís Rodrigues

  • Affiliations:
  • -;-;-

  • Venue:
  • SRDS '00 Proceedings of the 19th IEEE Symposium on Reliable Distributed Systems
  • Year:
  • 2000

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Abstract

Reliable multicast protocols can strongly simplify the design of distributed applications. However, it is hard to sustain a high-multicast throughput when groups are large and heterogeneous. In an attempt to overcome this limitation, previous work has focused on weakening reliability properties. In this paper, we introduce a novel reliability model that exploits semantic knowledge to decide in which specific condition messages can be purged without compromising application correctness. This model is based on the concept of message obsolescence: A message becomes obsolete when its content or purpose is overwritten by a subsequent message. We show that message obsolescence can be expressed in a generic way and can be used to configure the system to achieve higher multicast throughput.