ITR: Intelligent Networks for Resilient Web Services

分布式应用程序由来自多个管理域的组件组成，由于缺乏中央管理机构，因此对可伸缩性和可用性提出了挑战。 这个项目调查，在Web服务体系结构的背景下，是否应用程序级的智能网络路径之间的客户端和服务可以帮助解决这些挑战。智能体现在模块中，用于检查客户端流量，对服务操作（如复制、请求重定向或准入控制）做出决策，并最终实现这些操作。 该项目结合了一个系统架构，用于在中间路由节点执行特定于服务的操作，并采用应用程序中立的算法，为更接近网络边缘的客户端请求提供服务。 该架构和算法都使用语义框架，该框架将服务请求视为针对（物理或虚拟）数据库。该活动的智力价值包括（1）开发新的技术和算法，用于自动缩放基于组件的服务，以响应不利的客户端和网络负载条件;以及（2）研究体系结构，以便可靠和有效地实现对客户端请求的特定于服务的操作。该活动的更广泛影响包括（1）提高国家网络基础设施抵御恶意攻击的能力的技术;（2）将研究成果整合到本科生课程中，培训学生构建基于组件的分布式系统。

Distributed applications comprising components from multipleadministrative domains, pose scalability and availability challengesbecause of the lack of a central administrative authority. Thisproject investigates, in the context of the Web Services architecture,whether application-level intelligence on the network path betweenclients and services can help address these challenges. Theintelligence is embodied in modules for inspecting client traffic,making decisions about service actions such as replication, requestredirection, or admission control, and finally realizing theseactions. The project combines a system architecture for executingservice-specific actions at intermediate routing nodes withapplication-neutral algorithms for servicing client requests closer tothe network edge. Both the architecture and the algorithms work witha semantic framework, which treats service requests as structuredaccesses against a (physical or virtual) database.The intellectual merits of the activity include (1) development ofnovel techniques and algorithms for automatically scalingcomponent-based services in response to adverse client and networkload conditions; and (2) investigation of architectures for securelyand efficiently realizing service-specific actions on client requestscloser to the network edge.Broader impacts of the activity include (1) techniques for improvingthe resilience of the nation's cyber-infrastructure against maliciousattacks; and (2) integration of the research results into anundergraduate-level course that will train students to buildcomponent-based distributed systems.