东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (1): 31-34.DOI: -

• 论著 • 上一篇    下一篇

基于具体事务的补偿支持服务替换QoS模型

印莹;张斌;张锡哲;   

  1. 东北大学信息科学与工程学院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-01-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2009AA012122);;

A compensation-supported substitution QoS model based on detailed transaction

Yin, Ying (1); Zhang, Bin (1); Zhang, Xi-Zhe (1)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-01-15 Published:2013-06-20
  • Contact: Zhang, B.
  • About author:-
  • Supported by:
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摘要： 针对传统替换模型中缺乏事务支持而不可用的情况,提出了一种补偿支持的服务替换QoS模型.该模型充分考虑了服务间多关系以及事务Web服务特性,将事务补偿代价与替换选取代价有机结合,建立了全面评价补偿支持的替换服务QoS目标函数,在此基础上,提出了全新QoS驱动的补偿支持服务替换算法.实验证明该模型不仅保证了替换过程中事务原子性和数据一致性,而且提高了系统的可靠性和可信性.

关键词: Web服务, 替换, 补偿, 事务, QoS

Abstract: A QoS-substitution model with composition-supported is developed, since the traditional substitution models are unavailable due to lack of transactional support in the execution process of Web service. In the model, the interrelation between many kinds of services and characteristics of Web service for a certain business are all fully considered. Combining the composition cost for a failed or unavailable service with that to substitute the same one in the whole execution process of Web service, an objective QoS function is provided to evaluate comprehensively the composition-supported service that will be substituted. Then, a new QoS-driven service substitution algorithm supported by composition is proposed. Testing results demonstrated that the model proposed not only ensures the atomicity and data consistency in the service substitution process, but also improves the reliability and of service systems.

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