scholarly journals Autonomic Web Services Based on Different Adaptive Quasi-Asynchronous Checkpointing Techniques

2020 ◽  
Vol 10 (7) ◽  
pp. 2495
Author(s):  
Mariano Vargas-Santiago ◽  
Luis Morales-Rosales ◽  
Raul Monroy ◽  
Saul Pomares-Hernandez ◽  
Khalil Drira
Keyword(s):  
Web Services ◽  
Autonomic Computing ◽  
Service Providers ◽  
Self Healing ◽  
Efficient Manner ◽  
Internet Infrastructure ◽  
Control Information ◽  
Computing Paradigm ◽  
Self Protection

Companies, organizations and individuals use Web services to build complex business functionalities. Web services must operate properly in the unreliable Internet infrastructure even in the presence of failures. To increase system dependability, organizations, including service providers, adapt their systems to the autonomic computing paradigm. Strategies can vary from having one to all (S-CHOP, self-configuration, self-healing, self-optimization and self-protection) features. Regarding self-healing, an almost identical tool is communication-induced checkpointing (CiC), a checkpoint contains the state (heap, registers, stack, kernel state) for each process in the system. CiC is based on quasi-synchronous checkpointing where processes take checkpoints relying of control information piggybacked inside application messages; however, avoiding dangerous patterns such as Z-paths and Z-cycles; in such a regard the system takes forced checkpoints and avoids inconsistent states. CiC, unlike other tools, does not incur system performance, our proposal does not incur high overhead (as results show), and it has the advantage of being scalable. As we have shown in a previous work, CiC can be used to address dependability problems when dealing with Web services, as CiC mechanism work in a distributed and efficient manner. Therefore, in this work we propose an adaptable and dynamic generation of checkpoints to support fault tolerance. We present an alternative considering Quality of Service (QoS) criteria, and the different impact applications have on it. We propose taking checkpoints dynamically in case of failure or QoS degradation. Experimental results show that our approach has significantly reduced the generation of checkpoints of various well-known tools in the literature.

Role-Based Autonomic Systems

2010 ◽  
Vol 2 (3) ◽  
pp. 32-51 ◽  
Author(s):  
Haibin Zhu
Keyword(s):  
Autonomic Computing ◽  
Self Management ◽  
Self Awareness ◽  
Self Healing ◽  
Systems Management ◽  
Computing Systems ◽  
Computing Paradigm ◽  
Role Based ◽  
Coordination And Collaboration ◽  
Self Protection

Autonomic Computing is an emerging computing paradigm used to create computer systems capable of self-management in order to overcome the rapidly growing complexity of computing systems management. To possess self-* properties, there must be mechanisms to support self-awareness, that is an autonomic system should be able to perceive the abnormality of its components. After abnormality is checked, processes of self-healing, self-configuration, self-optimization, and self-protection must be completed to guarantee the system works correctly and continuously. In role-based collaboration (RBC), roles are the major media for interaction, coordination, and collaboration. A role can be used to check if a player behaves well or not. This paper investigates the possibility of using roles and their related mechanisms to diagnose the behavior of agents, and facilitate self-* properties of a system.

Role-Based Autonomic Systems

2012 ◽  
pp. 165-184 ◽  
Author(s):  
Haibin Zhu
Keyword(s):  
Autonomic Computing ◽  
Self Management ◽  
Self Awareness ◽  
Self Healing ◽  
Systems Management ◽  
Computing Systems ◽  
Computing Paradigm ◽  
Role Based ◽  
Coordination And Collaboration ◽  
Self Protection

Autonomic Computing is an emerging computing paradigm used to create computer systems capable of self-management in order to overcome the rapidly growing complexity of computing systems management. To possess self-* properties, there must be mechanisms to support self-awareness, that is an autonomic system should be able to perceive the abnormality of its components. After abnormality is checked, processes of self-healing, self-configuration, self-optimization, and self-protection must be completed to guarantee the system works correctly and continuously. In role-based collaboration (RBC), roles are the major media for interaction, coordination, and collaboration. A role can be used to check if a player behaves well or not. This paper investigates the possibility of using roles and their related mechanisms to diagnose the behavior of agents, and facilitate self-* properties of a system.

QoS-Based Extensible Selection Framework for Web Service

2012 ◽  
Vol 433-440 ◽  
pp. 1762-1765
Author(s):  
Li Qun Cui ◽  
Cui Cui Li
Keyword(s):  
Web Services ◽  
Web Service ◽  
Functional Properties ◽  
Service Providers ◽  
Rapid Development ◽  
Service Selection ◽  
Functional Requirements ◽  
Web Service Selection ◽  
Selection Framework

With the rapid development of Web services technology, more and more Web services emerged in the network. Service consumer attached importance to the functional properties of services, also more and more emphasis on non-functional properties, namely Quality of Service. The Ultimate goal is meet consumer the demand of QoS. Therefore, service providers paid more and more attention to quality of services to meets the needs of users. This takes into account the options to meet the functional requirements and the QoS requirements, and designed a Web service selection framework. At the same time, QoS attributes can be added or deleted the number, so it is an extendible framework. The results show that the framework could select the appropriate service for users.

scholarly journals An Adaptable Context Management Framework for Pervasive Computing

2010 ◽  
pp. 276-308 ◽  
Author(s):  
Jared Zebedee ◽  
Patrick Martin ◽  
Kirk Wilson ◽  
Wendy Powley
Keyword(s):  
Web Services ◽  
Pervasive Computing ◽  
Context Awareness ◽  
Management System ◽  
Autonomic Computing ◽  
Context Management ◽  
Management Framework ◽  
Intermittent Connectivity ◽  
Computing Paradigm ◽  
Pervasive Environment

Pervasive computing presents an exciting realm where intelligent devices interact within the background of our environments to create a more intuitive experience for their human users. Context-awareness is a key requirement in a pervasive environment because it enables an application to adapt to the current situation. Context-awareness is best facilitated by a context management system that supports the automatic discovery, retrieval and exchange of context information by devices. Such a system must perform its functions in a pervasive computing environment that involves heterogeneous mobile devices which may experience intermittent connectivity and resource and power constraints. The objective of the chapter is to describe a robust and adaptable context management system. We achieve an adaptable context management system by adopting the autonomic computing paradigm, which supports systems that are aware of their surroundings and that can automatically react to changes in them. A robust context management system is achieved with an implementation based on widely accepted standards, specifically Web services and the Web Services Distributed Management (WSDM) standard.

Towards Efficient Trust Aware E-Marketplace Frameworks

2010 ◽  
pp. 273-283
Author(s):  
Malamati Louta ◽  
Angelos Michalas
Keyword(s):  
Service Providers ◽  
Quality Level ◽  
Service Provisioning ◽  
Key Factors ◽  
Efficient Manner ◽  
Time Period ◽  
Service Operation ◽  
Cost Efficient ◽  
Posted Offer

In the liberalized and deregulated e-marketplace some key factors for service providers’ success are the following. First, the efficiency with which services will be developed. Second, the quality level, in relation with the corresponding cost, of new services. Third, service providers’ reliability with respect to service provisioning. Fourth, the efficiency with which the services will be operated (controlled, maintained, administered, etc.). The aim of this paper is, in accordance with efficient service operation objectives, to propose enhancements to the sophistication of the negotiation functionality that can be offered by e-commerce systems in open competitive communications environments. In the highly competitive and dynamic emarketplaces, Service/Product Requestors (SPRs) should be provided with mechanisms that enable them to find and associate with the most appropriate Service/Product Providers (SPPs), i.e., those offering the desirable quality of service / product at a certain time period, in a cost efficient manner. Such mechanisms may entail a wide variety of negotiation mechanisms, including auctions, bilateral (1 to 1) and/or multilateral (M to N) negotiation models and strategies, as well as posted offer schemes (i.e., a nonnegotiable, take-it-or-leave-it offer) in order to establish the ‘best’ possible contract terms and conditions with respect to service / product access and provision.

scholarly journals An Adaptable Context Management Framework for Pervasive Computing

2011 ◽  
pp. 114-146
Author(s):  
Jared Zebedee ◽  
Patrick Martin ◽  
Kirk Wilson ◽  
Wendy Powley
Keyword(s):  
Web Services ◽  
Pervasive Computing ◽  
Context Awareness ◽  
Management System ◽  
Autonomic Computing ◽  
Context Management ◽  
Management Framework ◽  
Intermittent Connectivity ◽  
Computing Paradigm ◽  
Pervasive Environment

Pervasive computing presents an exciting realm where intelligent devices interact within the background of our environments to create a more intuitive experience for their human users. Context-awareness is a key requirement in a pervasive environment because it enables an application to adapt to the current situation. Context-awareness is best facilitated by a context management system that supports the automatic discovery, retrieval and exchange of context information by devices. Such a system must perform its functions in a pervasive computing environment that involves heterogeneous mobile devices which may experience intermittent connectivity and resource and power constraints. The objective of the chapter is to describe a robust and adaptable context management system. We achieve an adaptable context management system by adopting the autonomic computing paradigm, which supports systems that are aware of their surroundings and that can automatically react to changes in them. A robust context management system is achieved with an implementation based on widely accepted standards, specifically Web services and the Web Services Distributed Management (WSDM) standard.

scholarly journals Trusted Service Evaluation for Mobile Edge Users: Challenges and Reviews

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Tingting Shao ◽  
Xuan Yang ◽  
Fan Wang ◽  
Chao Yan ◽  
Ashish Kr. Luhach
Keyword(s):  
Web Services ◽  
Service Quality ◽  
Service Providers ◽  
Service Selection ◽  
Service Evaluation ◽  
Research Field ◽  
Quality Data ◽  
Quality Of Services ◽  
Typical Application

With the increasing growth of web services shared in various mobile edge platforms, it becomes necessary to evaluate all the candidates based on their quality of services to reduce the users’ service selection cost. However, the service quality data released by service providers cannot be simply deemed as trusted due to various subjective or objective reasons, which further produce a series of serious trust-aware service evaluation problems, including service quality data sparsity and lack of feedback incentive. In view of this, we summarize the challenging issues existing in the current research field of trusted mobile edge service evaluation. Afterward, we review the current research status of the trusted service evaluation in the mobile edge environment and discuss one of the typical application scenarios based on trusted service evaluation, that is, recommender systems, as well as their diverse categories. We believe this research could be helpful in assisting a mobile edge platform to build a trusted reputation system for various smart applications hosted in the mobile edge platform.

Web Service Composition, Optimization and the Implications for Developing Economies

2012 ◽  
pp. 57-78
Author(s):  
Adenike Osofisan ◽  
Idongesit E. Eteng ◽  
Iwara Arikpo ◽  
Abel Usoro
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Developing Economies ◽  
Web Service Composition ◽  
Theoretic Approach ◽  
Computing Paradigm ◽  
Service Oriented

The emergence of the Service Oriented computing paradigm with its implicit inclusion of web services has caused a precipitous revolution in software engineering, e-service compositions, and optimization of e-services. Web service composition requests are usually combined with end-to-end Quality of Service (QoS) requirements, which are specified in terms of non-functional properties e.g. response time, throughput, and price. This chapter describes what web services are; not just to the web but to the end users. The state of the art approaches for composing web services are briefly described and a novel game theoretic approach using genetic programming for composing web services in order to optimize service performance, bearing in mind the Quality of Service (QoS) of these web services, is presented. The implication of this approach to cloud computing and economic development of developing economies is discussed.

scholarly journals Accelerated Service Oriented Architecture Implementation of Deduplication Principle

2019 ◽  
Vol 8 (11) ◽  
pp. 3218-3222
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
World Wide ◽  
Service Oriented Architecture ◽  
Service Providers ◽  
Semantic Web Services ◽  
Quality Level ◽  
The World ◽  
Service Oriented

The phrase “Web Services (WSs)” are emerging as a creative scheme for furnishing the services to various immanent devices over the World Wide Web. The hasty intensification of the WSs applications and the availability of the vast count of the Service Providers create the certainty of selecting the “efficient” Service Provider by the consumers. The scenario Deduplication and Quality-of-Service (QoS) swears out as an objective to distinguish various Service Providers (SPs). The process of selecting proficient WSs / SPs, positioning and optimization of WSs Compositions are exigent dimensions of research with momentous entailments for the fruition of the “Web of Services” revelation. The term “Semantic WSs” follows appropriate semantic descriptions of WS functionality and a medium to facilitate programmed cogitating over WS Compositions (WSCs). The persisting model of the Semantic Web Services (SWSs) deals with the intriguing emerges like wretched forecast of best WSs and gemination of services with effective SPs, which heads to Quality level degradation on the Semantic Web. To deal the above identified issues, the anticipated research is planned to construct a model to manipulative the content similarities (semantic), consumption of a mixture of WSs and its corresponding SPs. After assessing these params, all the WSs are stratified on the basis of its consumption. Ultimately, the nominated scheme, selects the best and non duplicated copy of the WSs on the basis of its rating and placed it in the WSC. The process of detecting the duplicate copy would be performed by the Cryptographic Hash value of the Services. From the experimental annotations, it is recognized that our anticipated design amends the functionality of the SWSs in terms of Processor Utilization, Accessing Time, and its Space optimizations

WSARCH

2012 ◽  
pp. 352-380 ◽  
Author(s):  
Júlio Cezar Estrella ◽  
Regina Helena Carlucci Santana ◽  
Marcos Jose Santana ◽  
Sarita Mazzini Bruschi
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Service Providers ◽  
Evaluation Studies ◽  
Design And Implementation ◽  
Functional Aspects ◽  
Service Oriented ◽  
Execution Platform

This chapter aims at the design and implementation of a service-oriented architecture (SOA), named WSARCH – Web Services Architecture - which allows accessing Web Services using a combination of functional and non-functional aspects of Quality of Service (QoS). These QoS aspects, aiming at evaluating the performance of Web Services in order to achieve QoS in a service-oriented architecture, are identified and discussed. These QoS attributes were mapped to the components participating in a service-oriented architecture with QoS support. The proposed architecture provides the monitoring of service providers and the data obtained are used to locate the most appropriated service. The WSARCH can be used as an analytical platform for purposes of testing Web Services and understanding their behavior as well as an execution platform for building live systems. A prototype for the WSARCH was developed, and it can allow performance evaluation studies being conducted considering different components of the architecture, algorithms, protocols and standards. The proposal WSARCH is inserted into a context where it is important to define the way a SOA focusing on performance shall be designed, since the correct characterization of what to evaluate and how to evaluate.

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