基于OSGi的分布式Web应用结构.pdfVIP

2015 年 第24 卷 第8 期 计 算 机 系 统 应 用 基于OSGi 的分布式Web 应用结构① 王宇飞, 朱 伟, 刘 丹 (南京南瑞集团公司 北京中电普华信息技术有限公司, 北京100192) 摘 要: 通常一个 Web 应用系统由多个功能模块组成, 但不同功能模块面临的压力不一样, 以致各模块对资源的 需求不同. 对Web 应用系统进行性能扩展普遍采用集群方式, 集群的粒度是整个Web 应用系统, 而不能对应用内 部某些负载压力较大的功能模块进行特殊处理. 设计了一种基于OSGi 的分布式Web 应用结构, 可以以模块为粒 度进行部署, 按照模块的实际负载情况调整部署结构. 该分布式结构基于OSGi 规范, 把Web 应用拆分成多个模 块, 以RFC119 为标准实现分布式节点之间服务交互. 这种结构将更加有效的利用系统资源, 节约应用部署成本. 实验表明, 该研究成果可优化大型Web 应用结构的设计, 并且随着应用模块数量的增多, 系统并发数的增加, 采 用该分布式Web 应用结构的优势越明显. 关键词: OSGi; Web 应用; 分布式; 模块 Distributed Web Application Structure Based on OSGi WANG Yu-Fei, ZHU Wei, LIU Dan (Beijing China Power Information Technology Co. Ltd, NARI Group Corporation, Beijing 100192, China) Abstract: The pressure of different functional modules in Web application system is different; the demand for resources of each module is different. The traditional way of cluster size in the cluster can only be applied for the entire cluster, rather than some internal function modules can apply for special treatment. This paper presents a distributed OSGi-based Web application structure, module size can be deployed in accordance with the actual load adjustment module deployment structure. This distributed architecture is based on the OSGi specification, the Web application into multiple modules to RFC119 standard for distributed service interactions between nodes. This structure will be more efficient use of system resources, saving application deployment costs. Experiments show that the research results can be optimized for a large Web application architecture design, and with the increasing number of application modules, the system increases the number of concurrent, distributed Web applications using the structure of the more obvious advantages. Key words: OSGi; web application; distributed; module 在大数据、大并发的计算机应用时代, Web