A Proxy-Based Approach to Enhancing the Autonomic Behavior in Composite Services

Ezenwoye, Onyeka; Sadjadi, S. Masoud

doi:10.4304/jnw.3.5.42-53

Cited by 17 publications

(14 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the system is stable, we found that the response time of MOSES WS is on average 266% higher than that achieved by the ActiveBPEL engine. This overhead is very similar to that reported in [5] for the TRAP/BPEL framework, which has a simpler architecture and provides less adaptation functionalities than MOSES WS. Although the SOA system manager expects to pay some performance penalty for the system self-adaptiveness, our effort in designing MOSES ESB has been to reduce such overhead.…”

Section: Open-model Experimentssupporting

confidence: 65%

“…PAWS [1] is a framework for flexible and adaptive execution of business processes but some of its modules work at design time, while MOSES adaptation operates only at runtime. Proxy-based approaches, similar to that used by MOSES for the runtime binding to concrete services, have been previously proposed, either for re-binding purposes [2] or for handling runtime failures in composite services as in the TRAP/BPEL framework [5]. The SASSY framework for self-adaptive SOA systems has been recently proposed in [11]: it self-architects at run-time a SOA system to optimize a system utility function.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Scalable and Highly Available Brokering Service for SLA-Based Composite Services

Bellucci

Cardellini

Valerio

et al. 2010

Service-Oriented Computing

View full text Add to dashboard Cite

Abstract. The introduction of self-adaptation and self-management techniques in a service-oriented system can allow to meet in a changing environment the levels of service formally defined with the system users in a Service Level Agreement (SLA). However, a self-adaptive SOA system has to be carefully designed in order not to compromise the system scalability and availability. In this paper we present the design and performance evaluation of a brokering service that supports at runtime the self-adaptation of composite services offered to several concurrent users with different service levels. To evaluate the performance of the brokering service, we have carried out an extensive set of experiments on different implementations of the system architecture using workload generators that are based on open and closed system models. The experimental results demonstrate the effectiveness of the brokering service design in achieving scalability and high availability.

show abstract

Section: Open-model Experimentssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

A Scalable and Highly Available Brokering Service for SLA-Based Composite Services

Bellucci

Cardellini

Valerio

et al. 2010

Service-Oriented Computing

View full text Add to dashboard Cite

show abstract

“…Erradi et al have presented a policy-based middleware that performs runtime monitoring and adaptation of Web service compositions [6]. Proxy-based approaches, similar to that used in MOSES for the dynamic binding to concrete services, have been previously proposed for re-binding purposes [8] as well as for handling runtime failures [9] in SOA applications.…”

Section: Introductionmentioning

confidence: 99%

Designing a Broker for QoS-driven Runtime Adaptation of SOA Applications

Cardellini

Iannucci

2010

2010 IEEE International Conference on Web Services

View full text Add to dashboard Cite

Abstract-One of the major current trends in serviceoriented systems is the emphasis given to the need of introducing runtime adaptation features, so that the system can meet its QoS requirements in a volatile operating environment. In this paper we present the design and implementation of a service broker that supports the QoS-driven runtime adaptation of SOA applications offered as composite services to users. We describe the functionalities provided by the broker components and present their design and implementation according to two different versions we have developed and that are both based on open source products. The components of the first version have been developed in Java as Web services, while the second version takes advantage of OpenESB. Since the broker needs to sustain a traffic of requests generated by several concurrent users, we also present the replicated architectures of the two broker versions. We discuss the design tradeoffs and the lesson we have learned in developing the broker.

show abstract

“…Dynamo [Baresi et al, 2007] relies on an aspect-oriented engine extension of ActiveBPEL engine to support monitoring and failure recovery. RobustBPEL2 [Ezenwoye and Sadjadi, 2008] provides dynamic binding with proxies. An approach to optimize system performance, taking hardware resources into account, is presented in .…”

Section: ¾º º¾ äó ð ò ò ó óñôó× ë öú ×mentioning

confidence: 99%

Resource management of replicated service systems provisioned in the cloud

Björkqvist

Birke

Binder

2016

NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium

View full text Add to dashboard Cite

I certify that except where due acknowledgement has been given, the work presented in this thesis is that of the author alone; the work has not been submitted previously, in whole or in part, to qualify for any other academic award; and the content of the thesis is the result of work which has been carried out since the official commencement date of the approved research program. Lugano, 11 February 2015 ×ØÖ Ø Service providers seek scalable and cost-effective cloud solutions for hosting their applications. Despite significant recent advances facilitating the deployment and management of services on cloud platforms, a number of challenges still remain. Service providers are confronted with time-varying requests for the provided applications, inter-dependencies between different components, performance variability of the procured virtual resources, and cost structures that differ from conventional data centers. Moreover, fulfilling service level agreements, such as the throughput and response time percentiles, becomes of paramount importance for ensuring business advantages. Mathias BjörkqvistIn this thesis, we explore service provisioning in clouds from multiple points of view. The aim is to best provide service replicas in the form of VMs to various service applications, such that their tail throughput and tail response times, as well as resource utilization, meet the service level agreements in the most cost effective manner. In particular, we develop models, algorithms and replication strategies that consider multi-tier composed services provisioned in clouds. We also investigate how a service provider can opportunistically take advantage of observed performance variability in the cloud. Finally, we provide means of guaranteeing tail throughput and response times in the face of performance variability of VMs, using Markov chain modeling and large deviation theory. We employ methods from analytical modeling, event-driven simulations and experiments. Overall, this thesis provides not only a multi-faceted approach to exploring several crucial aspects of hosting services in clouds, i.e., cost, tail throughput, and tail response times, but our proposed resource management strategies are also rigorously validated via trace-driven simulation and extensive experiments.

show abstract

A Proxy-Based Approach to Enhancing the Autonomic Behavior in Composite Services

Cited by 17 publications

References 25 publications

A Scalable and Highly Available Brokering Service for SLA-Based Composite Services

A Scalable and Highly Available Brokering Service for SLA-Based Composite Services

Designing a Broker for QoS-driven Runtime Adaptation of SOA Applications

Resource management of replicated service systems provisioned in the cloud

Contact Info

Product

Resources

About