Interactive-Event-Based Workflow Simulation in Service Oriented

2006 ◽  
Author(s):  
Yanchong Zheng ◽  
Yushun Fan ◽  
Wei Tan
Keyword(s):  
Service Oriented ◽  
Event Based

scholarly journals Event Based Approach for Web Services Composition

2014 ◽  
pp. 52-58
Author(s):  
A. Vani Vathsala ◽  
Hrushikesha Mohanty
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Research Work ◽  
Ongoing Research ◽  
Loosely Coupled ◽  
Fine Grained ◽  
Business Applications ◽  
Event Driven ◽  
Service Oriented ◽  
Event Based

The success of the Internet and the ongoing globalization led to a demand for new solutions to meet the requirements for ITsystems. The paradigm of service-oriented and event-driven architecture with fine grained and loosely coupled services tries to cope with those needs. Service Oriented Architecture (SOA) and Event Driven Architecture (EDA) are two acknowledged architectures for the development of business applications and information systems, which have evolved separately over the years. Today both architectures are acknowledged, but their synergy is not. There are numerous benefits of having an architecture that supports coexistence between operations and events, and composition of services based on operation invocation and event triggering. As part of our ongoing research work, we have tried to analyze in this paper, the basic design of Event based systems, issues that have to be addressed when event based approach is used for composing and coordinating web services. Then we have specified the techniques available that handle these issues, and gave a comparative study on these techniques. Finally we have attempted to sort out the unhandled/ partially handled issues that could be addressed as part of our research.

Architectures for Large Scale Distributed Systems

2010 ◽  
pp. 23-46
Author(s):  
Valentin Cristea ◽  
Ciprian Dobre ◽  
Corina Stratan ◽  
Florin Pop
Keyword(s):  
Distributed Systems ◽  
Large Scale ◽  
Service Architecture ◽  
Service Oriented Architectures ◽  
Client Server ◽  
On Demand ◽  
Service Oriented ◽  
Open Grid Service Architecture ◽  
Event Based

This chapter introduces the macroscopic views on distributed systems’ components and their inter-relations. The importance of the architecture for understanding, designing, implementing, and maintaining distributed systems is presented first. Then the currently used architectures and their derivatives are analyzed. The presentation refers to the client-server (with details about Multi-tiered, REST, Remote Evaluation, and Code-on-Demand architectures), hierarchical (with insights in the protocol oriented Grid architecture), service-oriented architectures including OGSA (Open Grid Service Architecture), cloud, cluster, and peer-to-peer (with its versions: hierarchical, decentralized, distributed, and event-based integration architectures). Due to the relation between architecture and application categories supported, the chapter’s structure is similar to that of Chapter 1. Nevertheless, the focus is different. In the current chapter, for each architecture the model, advantages, disadvantages and areas of applicability are presented. Also the chapter includes concrete cases of use (namely actual distributed systems and platforms), and clarifies the relation between the architecture and the enabling technology used in its instantiation. Finally, Chapter 2 frames the discussion in the other chapters, which refer to specific components and services for large scale distributed systems.

Performance Modeling for Quality of Service Prediction in Service-Oriented Systems

2012 ◽  
pp. 258-279
Author(s):  
Christoph Rathfelder ◽  
Benjamin Klatt ◽  
Franz Brosch ◽  
Samuel Kounev
Keyword(s):  
Quality Of Service ◽  
Service Oriented Architecture ◽  
Service Selection ◽  
Quality Prediction ◽  
Critical Systems ◽  
Management Framework ◽  
Service Oriented ◽  
Prediction Techniques ◽  
Event Based

With the introduction of services, systems become more flexible as new services can easily be composed out of existing services. Services are increasingly used in mission-critical systems and applications, and therefore, considering Quality of Service (QoS) properties is an essential part of the service selection. Quality prediction techniques support the service provider in determining possible QoS levels that can be guaranteed to a customer or in deriving the operation costs induced by a certain QoS level. In this chapter, we present an overview on our work on modeling service-oriented systems for performance prediction using the Palladio Component Model. The prediction builds upon a model of a service-based system, and evaluates this model in order to determine the expected service quality. The presented techniques allow for early quality prediction, without the need for the system being already deployed and operating. We present the integration of our prediction approach into an SLA management framework. The emerging trend to combine event-based communication and Service-Oriented Architecture (SOA) into Event-based SOA (ESOA) induces new challenges to our approach, which are topic of a special subsection.

scholarly journals Service Oriented Solution Modeling and Variation Propagation Analysis Based on Architectural Building Blocks

2013 ◽  
Vol 10 (4) ◽  
pp. 39-61 ◽  
Author(s):  
Liang-Jie Zhang ◽  
Jia Zhang
Keyword(s):  
Service Oriented Architecture ◽  
Unified Modeling Language ◽  
Building Blocks ◽  
Software Systems ◽  
Unified Modeling ◽  
Actual Application ◽  
Propagation Analysis ◽  
Variation Propagation ◽  
Service Oriented ◽  
Event Based

In spite of the widely recognized benefits of applying Service Oriented Architecture (SOA) to design enterprise-scale software systems, its actual application practice is not always a success. One major reason is the lack of a systematic engineering process and tool supported by reusable architectural artifacts. Toward this ultimate goal, this paper proposes a new method of architectural building blocks (ABB)-based SOA solution design and it is applicable to any layered or tiered infrastructure. The authors present the modeling of solution-level architectural artifacts and their relationships, whose formalization enables event-based variation notification and propagation analysis. The goal is to provide architecture-level support for configuration and re-configuration of architectural artifacts based on industry practices. Their method also supports solution-level project variation management for the process of updating and maintaining architectural artifacts. The authors report a prototype tool that they have developed and describe how they extend the Unified Modeling Language (UML) mechanism to implement the system and enable solution-level enforcement as an example. The prototype has been applied in real projects as an SOA solution modeling tool.

A Security Review of Event-Based Application Function and Service Component Architecture

2020 ◽  
Vol 11 (2) ◽  
pp. 58-70
Author(s):  
Faisal Nabi ◽  
Jianming Yong ◽  
Xiaohui Tao
Keyword(s):  
Interaction Model ◽  
Application Development ◽  
Service Component ◽  
Architecture Model ◽  
Security Issues ◽  
Service Component Architecture ◽  
Component Architecture ◽  
Application Logic ◽  
Service Oriented ◽  
Event Based

The term service component is derived from SCA (service component architecture) for event based distributed system design. Although service component pattern offers composite application development and support application reusability functionality. However, security in event based communication in components interaction model mostly discussed on upper layer in SCA while developing service oriented component application logic. This layer is called application business process logic layer, which produces the application's rendering logic, having being authenticated from ACL.The need for such a comprehensive security review is required in this field that could possibly elaborate the issues in composite application and Event based attack in service component architecture model. The paper achieves this target by analysing, reviewing the security issues, modelling techniques in service component application functionality, while application components, that produces, consume, and processing events.

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