Journal ArticleDOI
QoS issues in Web services
Reads0
Chats0
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
More filters
Proceedings ArticleDOI
Agent-Based MADM Approach to the Dynamic Web Service Selection
TL;DR: Experiments shows an agent-based multi-attributes decision making (MADM) approach for the dynamic Web service selection is effective in particular for services which have multiple duplicates and require mass computation under unstable network environment.
Journal ArticleDOI
Fuzzy production network model for quality assessment of an information system based on microservices
TL;DR: The authors have proposed an approach to solving the problem of analyzing the quality of a microservice architecture which is implemented on the basis of a fuzzy production network model which allows for comprehensive accounting of various parameters (qualitative and quantitative).
Journal ArticleDOI
Live migration using checkpoint and restore in userspace (CRIU): Usage analysis of network, memory and CPU
TL;DR: LM processes are done to the docker container using CRIU by analyzing the quality of service (QoS), memory, and CPU usage and several indicators in comparison with the achievable result to reduce problems that occurred in the cloud service are examined.
Dissertation
Contribution à la malléabilité des collecticiels : une approche basée sur les services web et les agents logiciels
TL;DR: Une deuxieme exigence est d'assurer une certaine adaptabilite, ou le systeme peut dynamiquement integrer de nouveaux services sans arreter le deroulement of the collaboration, ni manuellement recoder and recompiler l'application.
Proceedings ArticleDOI
From Web Service Policies to Automatic Deviation Handling: Supporting Semantic Description of Reactions to Policy Violations
TL;DR: This paper introduces WS-Re2Policy 2.0, a semantic extension of the former work on a policy language which makes use of WS-Policy in order to describe requirements and handling of deviations through defined reactions.
References
More filters
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.