Journal ArticleDOI
QoS issues in Web services
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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Proceedings ArticleDOI
Quality analytics for evaluation of dynamic web based learning environment
Rohini,Indu Chhabra +1 more
TL;DR: This paper proposes analytics based method to generate and monitor values of some critical quality factors in dynamic web based learning environment and the analytics confirm the learner behavior towards the learning application.
Proceedings ArticleDOI
How to select web services intelligently on the basis of a Brain inspired method for solving fuzzy multi-criteria decision making problems
TL;DR: The BIFMCDM method has shown very interesting capabilities in processing fuzziness of the input data set in comparison with the Fuzzy Technique for Order of Preference by Similarity to Ideal Solution (Fuzzy TOPSIS).
Proceedings ArticleDOI
A Quality Model and Its Quantitative Evaluation Method for Web APIs
Rieko Yamamoto,Kyoko Ohashi,Masahiro Fukuyori,Kimura Kosaku,Atsuji Sekiguchi,Ryuichi Umekawa,Tadahiro Uehara,Mikio Aoyama +7 more
TL;DR: A proposed quality model for Web APIs that reflects their unique characteristics and its associated measures of the learnability and stability of Web APIs is applied to four types of actual Web APIs, including Uber, WordPress, OpenStack, and Media Processing.
Journal ArticleDOI
Multicriteria Resource Brokering in Cloud Computing for Streaming Service
TL;DR: Considering both service-oriented and infrastructure-oriented criteria, an effective trade-off approach based on goal programming model is proposed and it is shown that the proposed approach strikes a balance between these conflicting criteria commendably and achieves high cost efficiency.
Dissertation
Quality of service support for service discovery and selection in service oriented computing environment
TL;DR: This thesis proposes a new model for QoS assessment, based on user expectations that collects expectations as well as ratings from the users of a service, then calculates the QoS using only the ratings which were judged on similar expectations.
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.