Collaborative Research: Software Architectures for Distributed Web Services Based on Peer-to-Peer Technologies

协作研究：基于点对点技术的分布式Web服务的软件架构

• 批准号: 0509207
• 负责人: Zhiyong Xu
• 金额: $ 14.6万
• 依托单位: Suffolk University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-10-01 至 2009-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0509207&HistoricalAwards=false
• 关键词: Collaborative; Research; Software; Architectures; Distributed

One of the most pressing issues faced by today's IT researchers is how to provide a distributed server infrastructure to accommodate the exponentially increasing web accesses. This project considers web services consisting of geographically distributed servers, client caching, proxy caching, and distributed searching in a virtual network, embedded on top of a physical network. A set of software techniques is developed based on peer-to-peer (P2P) algorithms to achieve optimal overall performance and reliability with existing hardware/software resources. The project is carried out jointly at University of California, Riverside and Suffolk University. Researchers from HP Laboratories are involved as senior personnel.The web server, considered in this project, consists of geographically distributed heterogeneous nodes in a network based on different functionalities and applications of the web service. Clustering techniques are developed to create suitable P2P structures keeping in mind the topological properties of the Internet systems. Inside the cluster, scalable, efficient and high performance overlay network architectures are identified for web services. Efficient cooperative proxy cache placement and management mechanisms are developed in the virtual network following distributed shared memory (DSM) approaches. Proxy servers are combined with P2P clusters consisting of browser (client) caches, and a cooperative caching strategy is designed at the proxy level by embedding tree structures and directory schemes. Extensive software implementation, simulation, testing and evaluation are carried out using the PlanetLab distributed environment.

当今IT研究人员面临的最紧迫的问题之一是如何提供分布式服务器基础设施来适应指数级增长的web访问。该项目考虑了由地理上分布的服务器、客户端缓存、代理缓存和虚拟网络中的分布式搜索组成的web服务，这些服务嵌入在物理网络之上。基于点对点（P2P）算法开发了一套软件技术，利用现有的硬件/软件资源实现最佳的整体性能和可靠性。该项目由加州大学河滨分校和萨福克大学联合开展。来自惠普实验室的研究人员作为高级人员参与其中。在本项目中，web服务器由基于web服务的不同功能和应用程序的网络中地理上分布的异构节点组成。聚类技术的发展是为了创建合适的P2P结构，同时考虑到互联网系统的拓扑特性。在集群内部，为web服务确定了可伸缩、高效和高性能的覆盖网络体系结构。采用分布式共享内存（DSM）方法，在虚拟网络中开发了高效的协同代理缓存放置和管理机制。将代理服务器与由浏览器（客户端）缓存组成的P2P集群相结合，通过嵌入树结构和目录方案，在代理级设计了协同缓存策略。广泛的软件实现、仿真、测试和评估使用PlanetLab分布式环境进行。