Inference of performance annotations in Web Service composition models

Model-Driven Service Engineering 2010.

计算机科学;

Antonio García-Domínguez1, Inmaculada Medina-Bulo1, and Mariano Marcos-Bárcena2 ; 2Department of Mechanical Engineering and Industrial Design ; University of Cádiz ; C/Chile 1 ; CP 11003 ; Cádiz

Others  :  http://ceur-ws.org/Vol-608/paper5.pdf
PID  :  42915

学科分类：计算机科学（综合）

来源: CEUR

【 摘 要 】

High-quality services must keep working reliably and effi-ciently, and service compositions are no exception. As they integrate several internal and external services over the network, they need to be carefully designed to meet their performance requirements. Current ap- proaches assist developers in estimating whether the selected services can fulfill those requirements. However, they do not help developers define requirements for services lacking performance constraints and historical data. Manually estimating these constraints is a time-consuming process which might underestimate or overestimate the required performance, incurring in additional costs. This work presents the first version of two algorithms which infer the missing performance constraints from a service composition model. The algorithms are designed to spread equally the load across the composition according to the probability and frequency each service is invoked, and to check the consistency of the performance