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Research and Implementation of Distributed Business Execution Mechanism with QoS Guaranteed

Author: HouLiPei
Tutor: WangLei
School: University of Science and Technology of China
Course: Pattern Recognition and Intelligent Systems
Keywords: Business processes Distributed business operation Quality of service Service portfolio Branch aggregation
CLC: TP393.09
Type: Master's thesis
Year: 2011
Downloads: 23
Quote: 1
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Abstract


With the development and popularization of Internet technology, more and more available Web services on the network. Single service functions are limited, it is difficult to meet the needs of users, service portfolio, to consolidated multiple services, build new, complex, value-added business. Service network, there are multiple services with the same function, choose the service, quality of service has become an important factor of the user to measure the pros and cons of composite service, thus ensuring the quality of service of the service portfolio to become the focus of current research. Current service composition algorithms are centralized algorithm, according to the information of the service by the centralized composition engine to find the optimal path; and business execution system are centralized, need to complete the same execution engine the implementation of the business; such a centralized system bottlenecks and single points of failure, and scalable lack of sexual difference. Overlay network for the lack of a centralized system, this research work is based on the independent development of distributed business operation platform, network architecture platform running this service node Chord network organization to construct service-based, distributed service registry distributed service discovery and distributed business running function. In order to make the business operation platform can guarantee the global quality of service, and properly solve the the branch convergence problem of parallel processes, this paper presents a distributed service portfolio strategy, considered on the basis of specific QoS attributes can be used in the platform to make business, path forward routing, query service node information and deploy the routing table; then generates the nodes in each service node through the reverse combination to subsequent nodes tree tree or road map, depth-first traversal draw the optimal number of paths Finally, you can compose, as the combination of the basis of the previous hop node, either to ensure quality of service the branch convergence problem can help solve business path. Finally, the distributed service portfolio strategy applied to distributed business operating platform, and the effectiveness of the strategy for distributed service portfolio, different node failure in the case of the success rate of the service portfolio as well as a combination of time to experiment, the experimental results show that the distribution style business operation platform can provide to the user to ensure QoS business path, and there is no single point of failure and bottlenecks in the entire business operation platform has strong scalability and robustness.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network
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