scholarly journals Automated Regression Testing for Web Services

2019 ◽  
Vol 9 (2) ◽  
pp. 3412-3415
Keyword(s):  
Web Services ◽  
Regression Testing ◽  
Maintenance Cost ◽  
Testing Strategy ◽  
Software Maintainability ◽  
The Web

Web services represent class of applications developed through open internet standards. They help to develop dynamic applications and thus are used to deliver business components or functionalities on the web. Business functionalities as per changing market scenarios are frequently changing and so are these web services. It is therefore the need to properly ensure quality of these web services as they are essential to deliver functions which are required for organizations in their strategic business. To maintain desired level of quality, software maintainability of such applications is important. Regression Testing is required for proper maintaining any software and it becomes very costly in terms of cost and labor for constantly changing applications. Thus to reduce maintenance cost we need to reduce effort required in such testing. This paper presents an efficient regression testing strategy which is also automated to reduce the regression costs of web services. The strategy is implemented through an extensive framework supported by automation and also integrates data testing with regression. The proposed work is particularly useful for those applications which are delivered over web

Web Services Architecture Model to Support Distributed Systems

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Sawsan Ali Hamid ◽  
Rana Alauldeen Abdalrahman ◽  
Inam Abdullah Lafta ◽  
Israa Al Barazanchi
Keyword(s):  
Web Services ◽  
Web Service ◽  
Distributed System ◽  
Modern Technology ◽  
Service Description ◽  
Architecture Model ◽  
Software Applications ◽  
Evolving Model ◽  
The Web

Recently, web services have presented a new and evolving model for constructing the distributed system. The meteoric growth of the Web over the last few years proves the efficacy of using simple protocols over the Internet as the basis for a large number of web services and applications. Web service is a modern technology of web, which can be defined as software applications with a programmatic interface based on Internet protocol. Web services became common in the applications of the web by the help of Universal, Description, Discovery and Integration; Web Service Description Language and Simple Object Access Protocol. The architecture of web services refers to a collection of conceptual components in which common sets of standard can be defined among interoperating components. Nevertheless, the existing Web service's architecture is not impervious to some challenges, such as security problems, and the quality of services. Against this backdrop, the present study will provide an overview of these issues. Therefore, it aims to propose web services architecture model to support distributed system in terms of application and issues.

scholarly journals A Cluster-Based Browsing Model For QoS-Aware Web Service Selection

2021 ◽  
Author(s):  
Kian Farsandaj
Keyword(s):  
Web Services ◽  
Web Service ◽  
Clustering Algorithm ◽  
Service Selection ◽  
Functional Requirements ◽  
Analysis Techniques ◽  
Symbolic Data ◽  
Web Service Selection ◽  
The Web

In the last decade, selecting suitable web services based on users’ requirements has become one of the major subjects in the web service domain. Any research works have been done - either based on functional requirements, or focusing more on Quality of Service (QoS) - based selection. We believe that searching is not the only way to implement the selection. Selection could also be done by browsing, or by a combination of searching and browsing. In this thesis, we propose a browsing method based on the Scatter/Gather model, which helps users gain a better understanding of the QoS value distribution of the web services and locate their desired services. Because the Scatter/Gather model uses cluster analysis techniques and web service QoS data is best represented as a vector of intervals, or more generically a vector of symbolic data, we apply for symbolic clustering algorithm and implement different variations of the Scatter/Gather model. Through our experiments on both synthetic and real datasets, we identify the most efficient ( based on the processing time) and effective implementations.

scholarly journals Optimization of Web Services and Semantic Web Performance using different techniques provided by the QoS

2020 ◽  
Vol 9 (3) ◽  
pp. 381-384
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Semantic Web ◽  
Information Overload ◽  
Optimization Problems ◽  
Service Level ◽  
Services Research ◽  
Web Performance ◽  
The Web

Current Web services research is increasingly using semantic models to extract useful information from the Web according to different principles of the Semantic Web which allowed to take advantage of the consideration of the meaning and the meaning of the exchanged data to improve the feasibility of the different tasks such as the description, the pairing, and the discovery. This work focuses on semantic-service-oriented architectures in which providers of different Web services can describe, publish, and discover Semantic Web Services, whose purpose is to solve problems such as information overload and the navigation problem, which concern the users of the Web. In this paper, a solution to performance and optimization problems is proposed for the selection of web services at the QoS quality of service level taking into account the quality of service using different techniques provided by the QoS.

scholarly journals A Cluster-Based Browsing Model For QoS-Aware Web Service Selection

2021 ◽  
Author(s):  
Kian Farsandaj
Keyword(s):  
Web Services ◽  
Web Service ◽  
Clustering Algorithm ◽  
Service Selection ◽  
Functional Requirements ◽  
Analysis Techniques ◽  
Symbolic Data ◽  
Web Service Selection ◽  
The Web

In the last decade, selecting suitable web services based on users’ requirements has become one of the major subjects in the web service domain. Any research works have been done - either based on functional requirements, or focusing more on Quality of Service (QoS) - based selection. We believe that searching is not the only way to implement the selection. Selection could also be done by browsing, or by a combination of searching and browsing. In this thesis, we propose a browsing method based on the Scatter/Gather model, which helps users gain a better understanding of the QoS value distribution of the web services and locate their desired services. Because the Scatter/Gather model uses cluster analysis techniques and web service QoS data is best represented as a vector of intervals, or more generically a vector of symbolic data, we apply for symbolic clustering algorithm and implement different variations of the Scatter/Gather model. Through our experiments on both synthetic and real datasets, we identify the most efficient ( based on the processing time) and effective implementations.

Web Services Dependability

2010 ◽  
pp. 151-167
Author(s):  
Michael C. Jaeger ◽  
Matthias Werner
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
Conceptual Model ◽  
Current Status ◽  
Individual Quality ◽  
Definition Of ◽  
The Web ◽  
Present Activity

This chapter presents the definition of relevant terminology and a conceptual model of the basic terms. The chapter starts with the presentation of research in the area of dependability. Based on this, Web service concepts related to the dependability are introduced. The presentation leads into a statement identifying individual quality-of-service (QoS) characteristics for forming dependable Web services. Then, the chapter discusses the current status quo in the area of QoS-aware Web services. This part is divided into three subparts: description, management, and monitoring. This also identifies ongoing efforts as well as efforts that do not show present activity. By this discussion, this chapter puts research about dependability in relation with ongoing QoS-related efforts in the Web services domain. Thus it identifies how these efforts can be combined in order to form a dependable Web services platform.

Web Services Discovery and QoS-Aware Extension

2007 ◽  
pp. 185-211
Author(s):  
Chen Chen Zhou ◽  
Liang-Tien Chia ◽  
Bu-Sung Lee
Keyword(s):  
Web Services ◽  
Service Discovery ◽  
Value Added ◽  
Web Ontology Language ◽  
Binding Mechanism ◽  
Web Based ◽  
Ontology Language ◽  
Mission Critical ◽  
The Web

Web services are self-contained, self-describing modular applications. Different from traditional distributed computing, Web services are more dynamic on its ser-vice discovery and run-time binding mechanism. As big numbers of Web services appear on the Web, Web services discovery mechanism becomes essential. This chapter provides an in-depth discussion on works about Web services discovery. We first present some basis knowledge for the Web services discovery. After that we introduce some value-added services for the Web services discovery, such as the quality of service (QoS)-aware services discovery and semantics-aware service discovery. Since nonfunctional attributes, especially the QoS information, are quite important for mission critical tasks, we finally present our Semantic Web-based solution for QoS-aware service discovery and measurement. It complements Web ontology language-service (OWL-S) to achieve better services discovery, composition and measurement.

An Agent Architecture for Qos-Based Web Service Composition Using the Skyline Algorithm

2017 ◽  
Vol 6 (3) ◽  
pp. 179 ◽  
Author(s):  
El-Alami Ayoub ◽  
Hair Abdellatif
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Selection ◽  
Web Service Composition ◽  
Web Service Selection ◽  
Concrete Service ◽  
The Web ◽  
Selection Of

<p>Web service composition is a concept based on the built of an abstract process, by combining multiple existing class instances, where during the execution, each service class is replaced by a concrete service, selected from several web service candidates. This approach has as an advantage generating flexible and low coupling applications, based on its conception on many elementary modules available on the web. The process of service selection during the composition is based on several axes, one of these axes is the QoS-based web service selection. The Qos or Quality of Service represent a set of parameters that characterize the non-functional web service aspect (execution time, cost, etc...). The composition of web services based on Qos, is the process which allows the selection of the web services that fulfill the user need, based on its qualities. Selected services should optimize the global QoS of the composed process, while satisfying all the constraints specified by the client in all QoS parameters. In this paper, we propose an approach based on the concept of agent system and Skyline approach to effectively select services for composition, and reducing the number of candidate services to be generated and considered in treatment. To evaluate our approach experimentally, we use a several random datasets of services with random values of qualities.</p>

Some Aspects of Reliability Evaluation of Multi Service Multi-Functional SOAP Based Web Services

2018 ◽  
Vol 8 (4) ◽  
pp. 24-38 ◽  
Author(s):  
Abhijit Bora ◽  
Tulshi Bezboruah
Keyword(s):  
Web Services ◽  
Web Service ◽  
Reliability Evaluation ◽  
High Load ◽  
Service Users ◽  
Load Testing ◽  
Operational Quality ◽  
Mercury Load ◽  
The Web

Reliability evaluation of multi service multi-functional SOAP based web services for high load of users is important from the perspective of operational quality of the service, users and developers. In this article, the authors have emphasized on developing a novel methodology for evaluating the reliability of web service for high load. A prototype research medical web service is considered to predict the reliability of the service by using this methodology. The authors called the service as PMedWS (Prototype Medical Web Service). They performed stress and load testing on the web service using Mercury Load Runner to study the reliability aspects against massive users. The experimental results and the statistical analysis demonstrate the applicability and effectiveness of our methodology.

scholarly journals Web Service Reputation Evaluation Based on QoS Measurement

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Haiteng Zhang ◽  
Zhiqing Shao ◽  
Hong Zheng ◽  
Jie Zhai
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
Service Provider ◽  
Evaluation Method ◽  
Quality Data ◽  
Measurement Tool ◽  
The Difference ◽  
The Web

In the early service transactions, quality of service (QoS) information was published by service provider which was not always true and credible. For better verification the trust of the QoS information was provided by the Web service. In this paper, the factual QoS running data are collected by our WS-QoS measurement tool; based on these objectivity data, an algorithm compares the difference of the offered and measured quality data of the service and gives the similarity, and then a reputation evaluation method computes the reputation level of the Web service based on the similarity. The initial implementation and experiment with three Web services' example show that this approach is feasible and these values can act as the references for subsequent consumers to select the service.

Web Service Evaluation Using Probabilistic Models

2014 ◽  
pp. 288-294
Author(s):  
S. Zimeras
Keyword(s):  
Information System ◽  
Web Services ◽  
Web Service ◽  
Software Metrics ◽  
Probabilistic Models ◽  
Web Applications ◽  
Evaluation Criteria ◽  
Service Evaluation ◽  
The Web

Information system users, administrators, and designers are all interested in performance evaluation since their goal is to obtain or provide the highest performance at the lowest cost. This goal has resulted in continuing evolution of higher performance and lower cost systems leading to today’s proliferation of workstations and personal computers, many of which have better performance than earlier supercomputers. As the variety of Web services applications (Websites) increases, it gets more important to have a set of evaluation criteria that should evaluate the performance of their effectiveness. Based on those criteria, the quality of the services that the Web applications are providing could be analysed. This work represents software metrics that could (or need) be used to quantify the quality of the information that the Web services are providing. These measures could be useful to understand problematic frameworks during the implementation of the Websites and could lead to solutions preventing those problems.

Sign in / Sign up

Export Citation Format

Share Document