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Service-Level Agreement Durability for Web Service Response Time
BibTeX
@MISC{Jayathilaka_service-levelagreement,
author = {Hiranya Jayathilaka and Ra Krintz and Rich Wolski},
title = {Service-Level Agreement Durability for Web Service Response Time},
year = {}
}
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Abstract
Abstract—Cloud computing is an attractive model for de-ploying web services in a highly scalable manner. Users access such cloud-hosted services via their web-facing application programming interfaces (APIs). Prior work has shown that it is possible to use a combined approach of static analysis and cloud platform monitoring to predict the response time upper bounds of such web APIs. This technique can be employed to automatically generate service level agreements (SLAs) concerning the performance of cloud-hosted web APIs. In this work, we explore the validity period of auto-generated SLAs in cloud settings. We discuss a simple model by which API consumers can establish a response time SLA with the cloud platform, and renegotiate it when/if the SLA becomes invalid due to the dynamic nature of the cloud. Using empirical methods and simulations on a real world public cloud platform, we show that it is possible to auto-generate highly durable re-sponse time SLAs for cloud-hosted web APIs, thereby keeping the number of SLA invalidations and renegotiations very low, over long periods.
Keyphrases
service-level agreement durability web service response time cloud-hosted web apis validity period web apis de-ploying web service durable re-sponse time slas long period auto-generated slas cloud platform monitoring sla invalidation combined approach real world public cloud setting simple model service level agreement response time upper bound attractive model empirical method abstract cloud computing response time sla web-facing application programming interface user access cloud-hosted service prior work scalable manner api consumer cloud platform static analysis dynamic nature
