An Adaptive Group Communication System

Abstract

This paper presents an architecture to dynamically change from a given group communication protocol to another. Such an architecture allows a system designer to create a distributed system that takes advantage of the different features of various group communication protocols by selecting the most favorable one under particular circumstances. The system wraps a set of independent group communication protocols, offering to the user application a single group communication interface. A switching protocol implements the mechanism of replacing in runtime the currently used group communication protocol to another one. Policies to decide when a particular protocol change should take place are envisioned as separate components. This paper focuses on the proposed architecture, shows its components and describes the basic operation of the switching protocol.

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