A Novel Intermediary Framework for Dynamic Edge Service Composition

查看全文 作　　者：Claudia [1]Canali;Michele [1]Colajanni;Delfina [2]Malandrino;Vittorio [2]Scarano;Raffaele [2]Spinelli 机构地区：[1]Department of Information Engineering,University of Modena and Reggio Emilia;[2]Department of Computer Science,University of Salerno 出　　处：《Journal of Computer Science & Technology》索引2012年第27卷第2期,共17页 摘　　要：Multimedia content,user mobility and heterogeneous client devices require novel systems that are able to support ubiquitous access to the Web resources.In this scenario,solutions that combine flexibility,efficiency and scalability in offering edge services for ubiquitous access are needed.We propose an original intermediary framework,namely Scalable Intermediary Software Infrastructure (SISI),which is able to dynamically compose edge services on the basis of user preferences and device characteristics.The SISI framework exploits a per-user profiling mechanism,where each user can initially set his/her personal preferences through a simple Web interface,and the system is then able to compose at run-time the necessary components.The basic framework can be enriched through new edge services that can be easily implemented through a programming model based on APIs and internal functions.Our experiments demonstrate that flexibility and edge service composition do not affect the system performance.We show that this framework is able to chain multiple edge services and to guarantee stable performance. 关 键 词：服务组合 中介软件 框架 影响系统 基础设施 性能稳定 多媒体内容 客户端设备