| 基于J2EE分布式应用的高可用性结构设计与分析 |
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| 引用本文： | 黄晓涛,党朝志.基于J2EE分布式应用的高可用性结构设计与分析[J].华中科技大学学报(自然科学版),2005,33(8):44-47. |
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| 作者姓名： | 黄晓涛 党朝志 |
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| 作者单位： | 华中科技大学,计算机科学与技术学院,湖北,武汉,430074;华中科技大学,计算机科学与技术学院,湖北,武汉,430074 |
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| 摘 要： | 以构建分布式应用的高可用性体系结构为研究对象，提出了一种基于J2EE的分布式应用的高可用性结构模型．依据J2EE的体系结构特征，将整个分布式应用平台从逻辑上划分成为相对独立的三个层次（Web层，EJB层，EIS层），在这三个层次上分别运用不同的高可用性策略组成三个不同的集群子系统（Web C1us-ter，EJB Cluster，DB Cluster），从而构成三级可用性集群体系，提高整个系统的可用性；并运用马尔科夫随机过程对其可用性进行分析评估验证，结果表明，通过实施这种结构模型，整个分布式应用系统的可用性有显著的提高．
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| 关 键 词： | J2EE 高可用性 可用性分析 |
| 文章编号： | 1671-4512（2005）08-0044-04 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 2004年12月20 |
Design of high-available architecture for distributed application based on J2EE and its analysis |
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| Huang Xiaotao,Dang Chaozhi.Design of high-available architecture for distributed application based on J2EE and its analysis[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2005,33(8):44-47. |
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| Authors: | Huang Xiaotao Dang Chaozhi |
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| Abstract: | Building a high-available architecture for distributed application was considered. This type of architecture model was set forth based on J2EE. According to the structure of J2EE, the application system for the whole enterprises was divided into three independent tiers: Web layer, EJB one and DB one. By applying different availability policies respectively to three layers, three different clustery, Web, EJB and DB clusters, were constituted, to form a 3-tier cluster system for improving the availability of the application system. The high-available performance of the system was analyzed and tested by virtue of Markov Random Process. The result showed that the model could improve the availability of J2EE system. |
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| Keywords: | J2EE high-availability evaluation |
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