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计算机工程 ›› 2011, Vol. 37 ›› Issue (3): 49-51,54. doi: 10.3969/j.issn.1000-3428.2011.03.018

• 软件技术与数据库 • 上一篇    下一篇

基于网关服务缓存和QoS的服务发现机制

郭小乐,史维峰   

  1. (西北大学信息科学与技术学院,西安 710127)
  • 出版日期:2011-02-05 发布日期:2011-01-28
  • 作者简介:郭小乐(1983-),男,硕士,主研方向:SOA,分布式计算;史维峰,教授
  • 基金资助:

    国家“863”计划基金资助项目(2007AA010305);西安市科技计划基金资助项目(CXY09016)

Service Discovery Mechanism Based on Gateway Service Cache and QoS

GUO Xiao-le, SHI Wei-feng   

  1. (School of Information Science and Technology, Northwest University, Xi’an 710127, China)
  • Online:2011-02-05 Published:2011-01-28

摘要:

在服务描述语言上增加QoS描述,通过QoS认证中心管理和量化服务的QoS属性,实现Web服务的QoS属性描述。在此基础上,设计一种基于网关服务缓存和QoS的服务发现机制,通过代理服务网关对Web服务进行筛选,同时维护一个虚拟服务缓存管理历史服务请求信息,减少服务请求过程中重复的服务发现过程,提高服务发现性能,并通过实验验证其正确性和有效性。

关键词: 服务代理, 虚拟服务, 缓存, 服务发现, 服务质量

Abstract:

In this paper, Quality of Service(QoS) description is added to Web Service Description Language(WSDL). QoS certification center manages and quantifies the QoS attributes of services, which realizes the description of Web services’ QoS attributes. This paper designs a new service discovery mechanism. In the mechanism, Web services are selected by proxy service gateway, and there is a virtual service cache managing historical information of service requests. The mechanism reduces abundant service discovery and enhance the capability of services discovery. It uses an experiment system to validate the correctness and effectiveness of the mechanism.

Key words: service Agent, virtual service, cache, service discovery, Quality of Service(QoS)

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