【摘要】 容错CORBA是OMG组织为了适应分布式系统对容错性能的要求而对通用CORBA作的一个扩展.首先简要介绍了容错CORBA规范的一些基本概念以及相关研究,然后提出并实现了一个基于主动复制的容错CORBA模型,该模型利用全序服务实现了对象组成员处理请求的全序性,利用可靠服务保证了所有对象组的成员可以收到相同的请求报文.还在模型的调度机制上进行了研究并进行了系统的优化,实现了性能的提高.更多还原

【Abstract】 Fault tolerant CORBA specification is an extension of general CORBA specification and was released by OMG for the requirement of fault tolerance of distributed system. Some concepts of the fault tolerant CORBA specification and some typical fault tolerant CORBA systems were briefly introdued; then, a model that conforms to the specification was promoted and implemented. In this model, Total Service and Reliable Service are introduced to offer reliable total-order character of the fault tolerant CORBA system. Much attention is also paid to the scheduling of the fault tolerant CORBA system.更多还原