Track: Web Services
Paper Title:
Reliable QoS Monitoring Based on Client Feedback
Authors:
Abstract:
Service-level agreements (SLAs) establish a contract between service providers
and clients concerning Quality of Service (QoS) parameters. Without proper
penalties, service providers have strong incentives to deviate from the
advertised QoS, causing losses to the clients. Reliable QoS monitoring (and
proper penalties computed on the basis of delivered QoS) are therefore
essential for the trustworthiness of a service-oriented environment. In this
paper, we present a novel QoS monitoring mechanism based on quality ratings from the
clients. A reputation mechanism collects the ratings and computes the
actual quality delivered to the clients. The mechanism provides incentives for
the clients to report honestly, and pays special attention to minimizing cost
and overhead.
