An Algorithm to Predict the QoS-Reliability of Service Compositions

Author

Strunk, Anja

Author_Institution

Dept. of Comput. Networks, Tech. Univ. of Dresden, Dresden, Germany

fYear

2010

fDate

5-10 July 2010

Firstpage

205

Lastpage

212

Abstract

The idea of the future Internet of Services is to combine several services of numerous service providers to new value-added services or applications. To sell these services on so-called service marketplaces the providers have to ensure both a high quality and a high quality reliability. But how could a provider of a composed service know the quality-reliability of his service without costly tests? This article describes an approach to predict the quality-reliability of service composition based on a three-step algorithm. The algorithm calculates the expected number of service level objective (SLO) violations caused by the composition´s sub-services. The expected number of SLO violations can be used as metric for the QoS-reliability.

Keywords

Web services; quality of service; reliability; Internet; QoS; SLO; service level objective; service provider; value added services; Availability; Calculators; Markov processes; Mathematical model; Probability; Quality of service; Time factors; QoS; QoS-reliability; SOA; service; service composition;

fLanguage

English

Publisher

ieee

Conference_Titel

Services (SERVICES-1), 2010 6th World Congress on

Conference_Location

Miami, FL

Print_ISBN

978-1-4244-8199-6

Electronic_ISBN

978-0-7695-4129-7

Type

conf

DOI

10.1109/SERVICES.2010.49

Filename

5575831