Bootstrapping Performance and Dependability Attributes ofWeb Services

Rosenberg, Florian; Platzer, Christian; Dustdar, Schahram

doi:10.1109/icws.2006.39

Cited by 100 publications

(99 citation statements)

References 12 publications

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“…This is often the case for QoS data, since techniques such as QoS monitoring [15] can be used to get an idea of e.g., the response time of a service before it is actually invoked. The Violation Predictor uses both facts and estimates from previously monitored historical service executions to train a machine learning function (we use multi-layer artificial neural networks [16] for quantitative SLOs and C4.5 decision trees [17] for qualitative SLOs), which can then be used to produce a numerical estimation of the SLO values at runtime.…”

Section: Prediction Of Slosmentioning

confidence: 99%

“…Monitoring QoS has been an active research area for some time. Different techniques proposed in this direction include monitoring based on client feedback [23], monitoring of TCPlevel metrics using network analysis techniques [15] or event-based monitoring based on event-conditionaction rules [24]. We use the VRESCO event engine and event-based monitoring in a manner very similar to the approach presented in [24].…”

Section: Related Workmentioning

confidence: 99%

“…15,2011 For providers of composite services preventing cases of SLA violations is crucial. Previous work has established runtime adaptation of compositions as a promising tool to achieve SLA conformance.…”

mentioning

confidence: 99%

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Cost-Based Optimization of Service Compositions

Leitner

Hummer

Dustdar

2013

IEEE Trans. Serv. Comput.

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For providers of composite services preventing cases of SLA violations is crucial. Previous work has established runtime adaptation of compositions as a promising tool to achieve SLA conformance. However, in order to get a realistic and complete view of the decision process of service providers, the costs of adaptation need to be taken into account. In this paper we formalize the problem of finding the optimal set of adaptations, which minimizes the total costs arising from SLA violations and the adaptations to prevent them. We present possible algorithms to solve this complex optimization problem, and detail an end-to-end system based on our earlier work on the PREvent (prediction and prevention based on event monitoring) framework, which clearly indicates the usefulness of our model. We discuss experimental results that show how the application of our approach leads to reduced costs for the service provider, and explain the circumstances in which different algorithms lead to more or less satisfactory results. Abstract-For providers of composite services preventing cases of SLA violations is crucial. Previous work has established runtime adaptation of compositions as a promising tool to achieve SLA conformance. However, in order to get a realistic and complete view of the decision process of service providers, the costs of adaptation need to be taken into account. In this paper we formalize the problem of finding the optimal set of adaptations, which minimizes the total costs arising from SLA violations and the adaptations to prevent them. We present possible algorithms to solve this complex optimization problem, and detail an end-to-end system based on our earlier work on the PREvent (prediction and prevention based on event monitoring) framework, which clearly indicates the usefulness of our model. We discuss experimental results that show how the application of our approach leads to reduced costs for the service provider, and explain the circumstances in which different algorithms lead to more or less satisfactory results.

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Section: Prediction Of Slosmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Cost-Based Optimization of Service Compositions

Leitner

Hummer

Dustdar

2013

IEEE Trans. Serv. Comput.

Self Cite

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“…They further separate performance into eight components such as network latency, processing and wrapping time on the server, and round-trip time. While they state the need for measuring all of these components, they focus on round-trip time and present a providerindependent bootstrapping framework for measuring performance-related QoS on the client-side [22,20].…”

Section: Related Workmentioning

confidence: 99%

An Extensible Monitoring Framework for Measuring and Evaluating Tool Performance in a Service-Oriented Architecture

Becker

Kulovits

Kraxner

et al. 2009

Lecture Notes in Computer Science

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Abstract. The lack of QoS attributes and their values is still one of the fundamental drawbacks of web service technology. Most approaches for modelling and monitoring QoS and web service performance focus either on client-side measurement and feedback of QoS attributes, or on ranking and discovery, developing extensions of the standard web service discovery models. However, in many cases, provider-side measurement can be of great additional value to aid the evaluation and selection of services and underlying implementations.We present a generic architecture and reference implementation for non-invasive provider-side instrumentation of data-processing tools exposed as QoS-aware web services, where real-time quality information is obtained through an extensible monitoring framework. In this architecture, dynamically configurable execution engines measure QoS attributes and instrument the corresponding web services on the provider side. We demonstrate the application of this framework to the task of performance monitoring of a variety of applications on different platforms, thus enriching the services with real-time QoS information, which is accumulated in an experience base.

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“…In previous work [16], we have defined a QoS model for Web services by identifying different QoS attributes. Since some attributes are either dependent on external factors or derived from empirical values, not all attributes are determinable in advance.…”

Section: Listing 6 Sla Integration In Ws-cdlmentioning

confidence: 99%

Integrating Quality of Service Aspects in Top-Down Business Process Development Using WS-CDL and WS-BPEL

Rosenberg

Enzi

Michlmayr

et al. 2007

11th IEEE International Enterprise Distributed Object Computing Conference (EDOC 2007)

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Developing cross-organizational business processes is a tedious task. The partners have to agree on a common data format and meaning as well as on the Quality of Service (QoS) requirements each partner has to fulfill. The QoS requirements are typically described using Service Level Agreements (SLAs) among the partners. In this paper, we propose a top-down modeling approach for Web service based business processes to capture the functional and non-functional aspects using a choreography language (WS-CDL) which describes the message interactions among the participants. The choreography is annotated with SLAs for the different partners. For each partner in the process, an orchestration (in WS-BPEL) and the necessary Web service templates are automatically generated. Additionally, the Service Level Objectives (SLOs) from the partner SLAs are automatically translated into policies which can then be enforced by a BPEL engine during execution.

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Bootstrapping Performance and Dependability Attributes ofWeb Services

Cited by 100 publications

References 12 publications

Cost-Based Optimization of Service Compositions

Cost-Based Optimization of Service Compositions

An Extensible Monitoring Framework for Measuring and Evaluating Tool Performance in a Service-Oriented Architecture

Integrating Quality of Service Aspects in Top-Down Business Process Development Using WS-CDL and WS-BPEL

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