Journal ArticleDOI
QoS issues in Web services
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TLDR
QoS measures can include the maximum throughput or a function that describes how throughput varies with load intensity, which can be measured in terms of arrival rates (such as requests per second) or number of concurrent requests.Abstract:
Quality of service (QoS) is a combination of several qualities or properties of a service, such as: availability is the percentage of time that a service is operating; security properties include the existence and type of authentication mechanisms the service offers, confidentiality and data integrity of messages exchanged, nonrepudiation of requests or messages, and resilience to denial-of-service attacks; response time is the time a service takes to respond to various types of requests; Response time is a function of load intensity, which can be measured in terms of arrival rates (such as requests per second) or number of concurrent requests. QoS takes into account not only the average response time, but also the percentile of the response time; and throughput is the rate at which a service can process requests. QoS measures can include the maximum throughput or a function that describes how throughput varies with load intensity. The QoS measure is observed by Web services users. These users are not human beings but programs that send requests for services to Web service providers. QoS issues in Web services have to be evaluated from the perspective of the providers of Web services and from the perspective of the users of these services.read more
Citations
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Dissertation
Change Management of Long Term Composed Services
TL;DR: A framework for managing changes in Long term Composed Services (LCSs) including a Web Service Change Management Language (SCML), change enactment, and change optimization, and a two-phase optimization process to select services using both service reputation and service quality is proposed.
Book ChapterDOI
Quality of Service and Extra-Functional Properties for Web Services: A Model-Driven Approach
Guadalupe Ortiz,Behzad Bordbar +1 more
TL;DR: This chapter shall present a model-based approach to deal with specification and implementation of Quality of Service and extra-functional properties in a loosely coupled manner and results in increasing the system’s modularity and thus reducing implementation and maintenance costs.
Book ChapterDOI
Efficient scheduling strategies for web services-based e-business transactions
Erdogan Dogdu,Venkata Mamidenna +1 more
TL;DR: This paper considers a service-oriented computing (e.g., e-business) environment where “similar” services are provided by many providers, and shows through a simulation-based evaluation that even basic strategies improve the system throughput substantially.
Proceedings ArticleDOI
Adaptation of Web services using policies
TL;DR: A study to investigate the feasibility of achieving interoperability in Web services by evaluating the functionality of adapters when mismatches appear at the policy layer, which includes non-functional properties like QoS.
Journal ArticleDOI
Channel Prediction and Transmitter Authentication With Adversarially-Trained Recurrent Neural Networks
Ken St. Germain,Frank Kragh +1 more
TL;DR: In this article, the use of recurrent neural networks (RNNs) using LSTM and gated recurrent unit (GRU) cells with variations of a conditional generative adversarial network (CGAN) to authenticate transmitters in a mobile environment was proposed.
References
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Journal ArticleDOI
Unraveling the Web services web: an introduction to SOAP, WSDL, and UDDI
Francisco Curbera,Matthew J. Duftler,Rania Khalaf,William A. Nagy,Nirmal K. Mukhi,Sanjiva Weerawarana +5 more
TL;DR: This tutorial explores the most salient and stable specifications in each of the three major areas of the emerging Web services framework, which are the simple object access protocol, the Web Services Description Language and the Universal Description, Discovery, and Integration directory.
Journal ArticleDOI
Session-based admission control: a mechanism for peak load management of commercial Web sites
Ludmila Cherkasova,P. Phaal +1 more
TL;DR: It is shown that a Web server augmented with the admission control mechanism is able to provide a fair guarantee of completion, for any accepted session, independent of a session length, which is a critical requirement for any e-business.