Message-Oriented Middleware with QoS Awareness

Publish/subscribe messaging is a fundamental mechanism for interconnecting disparate services and systems in the service-oriented computing architecture. The quality of services (QoS) of the messaging substrate plays a critical role in the overall system performance as perceived by the end users. In this paper, we present the design and implementation of Harmony, an overlay-based messaging system that can manage the end-to-end QoS in wide-area publish/subscribe communications based on the application requirements. This is achieved through a holistic set of overlay route establishment and maintenance mechanisms, which actively exploit the diversity in the network paths and redirect the traffic over links with good quality, e.g., low latency and high availability. In order to cope with network dynamics and failures, Harmony continuously monitors the link quality and adapts the routes whenever their quality deteriorates below the application requirements. Harmony can operate on top of diï...

• Type: Conference
• Year: 2009
• Where: ICSOC
• Authors: Hao Yang, Minkyong Kim, Kyriakos Karenos, Fan Ye, Hui Lei
• Keywords: Application Requirements, End-to-end Qos, ICSOC 2009, Messaging System