Significant Message Precedence in Object-Based Systems

Distributed applications are realized by cooperation of objects. A state of the object depends on in what order the object exchanges request and response messages and computes requests. In this paper, we newly define a significantly precedent order of messages based on a conflicting relation among requests. The objects can be mutually consistent if the objects take messages in the significantly precedent order. We discuss a protocol which supports the significantly ordered delivery of request and response messages. Here, an object vector is newly proposed to significantly order messages.