Details

Autor(en) / Beteiligte

• Wohlstadter, Eric
• Tai, Stefan
• Mikalsen, Thomas
• Rouvellou, Isabelle
• Devanbu, Premkumar

Titel

GlueQoS: Middleware to Sweeten Quality-of-Service Policy Interactions

Ist Teil von

• International Conference on Software Engineering: Proceedings of the 26th International Conference on Software Engineering; 23-28 May 2004, 2004, p.189-199

Ort / Verlag

Los Alamitos CA: IEEE Computer Society

Erscheinungsjahr

2004

Link zum Volltext

• Volltext

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• A holy grail of component-based software engineeringis "write-once, reuse everywhere". However, inmodern distributed, component-based systems supportingemerging application areas such as service-orientede-business (where web services are viewed as components)and Peer-to-Peer computing, this is difficult. Non-functional requirements (related to quality-of-service (QoS) issues such as security, reliability,and performance) vary with deployment context, andsometimes even at run-time, complicating the task ofre-using components. In this paper, we present amiddleware-based approach to managing dynamicallychanging QoS requirements of components. Policiesare used to advertise non-functional capabilities andvary at run-time with operating conditions. We alsoprovide middleware enhancements to match, interpret,and mediate QoS requirements of clients and servers atdeployment time and/or runtime.