A Hierarchy Model for Dynamic Replacing of Distributed Components

In this paper, we present a hierarchy model for dynamic updating of distributed components based on message-passing communication mechanism. In this model, multi-components´ updating is divided into two level: multi-components´ sequential updating from lower to higher level between groups; multi-components´ sequential updating from lower to higher in a group. Our model may preserve system state´s consistency through coordinating multi-components´ updatable-state´s arriving and may update multi-components concurrently in different nodes to make updating effective. Accordingly, we propose a prototype framework of a component server supporting this model.