G-QOSM: Grid Service Discovery Using QoS Properties
Rashid Al‐Ali, OMER F. RANA, DAVID W. WALKER, Sanjay Kumar Jha, Shaleeza Sohail · 2002
We extend the service abstraction in the Open Grid Services Architecture[12] for Quality of Service (QoS) properties. The realization of QoS often requires mechanisms such as advance or on-demand reservation of resources, varying in type and implementation, and independently controlled and monitored. Foster et al. propose the GARA [10] architecture. The GARA library provides a restricted representation scheme for encoding resource properties and the associated monitoring of Service Level Agreements (SLAs). Our focus is on the application layer, whereby a given service may indicate the QoS properties it can offer, or where a service may search for other services based on particular QoS properties. Keywords: QoS, Service-Oriented Grids, Differentiated Services, Web Services. 1 Introduction and Related Work Service Oriented Computing is often seen as a natural progression from component-based software development [20], and as a means of integrating different component development frameworks. A service in this context may be defined as a behaviour that is provided by a component for use by any other component based on a network-addressable interface contract (generally