Method for replacing Web services based on service priority
A technology of service priority and service replacement, which is applied in the field of Web service replacement based on service priority, and can solve the problems of discarding, waste of computing resources of computer systems, and long reorganization time.
Active Publication Date: 2013-01-30
ZHEJIANG UNIV
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Problems solved by technology
However, in the actual application environment, due to the dynamic changes of the network environment where the Web service is located, the QoS of the same service changes at any time; in addition, with the new QoS requirements of users, the current composite service may no longer be available. Satisfy the QoS constraints
Both of the above two situations require composite service reorganization, which means that the existing composite service architecture will be discarded, which will inevitably cause the computer system to discard the previous calculation results, resulting in waste of computer system computing resources and longer reorganization time. long
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[0061] Such as figure 1 and figure 2 As shown, a Web service replacement method based on service priority, the replacement system includes the following parts:
[0062] QoS manager 1: used for IO interaction with users and scheduling other operations on Web services;
[0063] QoS monitor 2: used to supervise the service quality of the composite service, when the current QoS no longer meets the user's needs, the QoS monitor will report the failure behavior of the Web service to the QoS manager 1;
[0064] Service replacement device 3: when the QoS manager 1 receives the message that the Web service is invalid, it notifies the service replacement device 3, which repairs the invalid composite service through service replacement;
[0065] Service priority calculation device 4: calculate the replacement priority of each service in the composite service, and determine the order of service replacement;
[0066] Registration service library 5: used to register all optional service...
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The invention discloses a method for replacing Web services based on service priority, which comprises the steps of: 1, preprocessing: recording Web services which can be transferred by composite services to a local Web service library, applying skyline algorithm and screening a candidate service set; 2, sequencing the priority of composite services: determining the sequence of replacing the services according to importance of services in the composite services; 3, replacing the Web services: replacing the composite services by means of Web service DRASS replacing algorithm by using the services in the candidate service set in the step 1 according to the sequence of replacing the services obtained in the step 2; and 4, returning to the step 1. The method disclosed by the invention saves the operating resources of a computer system and shortens the operating time of the computer system.
Description
technical field [0001] The invention relates to web services, in particular to a method for replacing web services based on service priority. Background technique [0002] A computer network enables computer systems to communicate with each other to share data. Web services (the services referred to in the present invention hereinafter also refer to Web services) can realize data sharing of application programs between computer systems. With the development of network technology, single-function Web services can no longer meet the needs of users. The development of SOA technology (Service-Oriented Architecture, service-oriented architecture) promotes the seamless aggregation and collaborative work of web applications with different functions to form large-scale composite services. At present, there are a large number of Web services with the same function from different service providers on the Internet, but there is a big difference in the quality of service among them, w...
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IPC IPC(8): H04L29/08
Inventor 李莹鲁苑蕾吴朝晖邓水光吴健尹建伟
Owner ZHEJIANG UNIV