Protocol for A Group of Objects Tomoya Enokido, Hiroaki Higaki, and Makoto Takizawa Tokyo Denki University E-mail feno, hig,
[email protected] In distributed applications, a group of multiple objects cooperate. In traditional group communication protocols, messages are causally delivered at the network level. In order to reduce the protocol overhead, only messages required to be causally delivered at the application level have to be ordered. The state of the object depends on in what order the requests and responses are transmitted and the requests are computed. In this paper, we de ne the signi cant precedence order of messages based on the con icting relation among the requests. We discuss a protocol which supports the signi cantly ordered delivery of request and response messages.
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