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Web service combination method

A combination method and web service technology, applied in the field of web service composition based on a hierarchical storage structure, can solve problems such as low system composition efficiency, avoid access operations, reduce a large number of redundant composition request analysis operations, and improve execution efficiency. Effect

Inactive Publication Date: 2010-09-29
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the deficiency that the existing Web service composition method has low efficiency of the entire system composition due to a large number of redundant operations, the present invention provides a Web service composition method

Method used

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Embodiment Construction

[0016] refer to figure 1 , figure 2 , this embodiment takes a certain 300 local test sets and 4000 Web service composition request scenarios as objects, and the maximum combination delay is 500 ms, and constructs a Web service composition method based on a hierarchical storage structure. Specific steps are as follows:

[0017] In the first step, according to the number of effective Web services in the combination scenario and the system’s minimum requirements for the maximum delay of the combination, set the maximum number of storage records in the virtual storage unit for Web service request processing to 5, and usually this value is much smaller than the number of effective Web services; set the records The main format of the unit storage content is: . Taking the access frequency Frequency as the evaluation benchmark, the least recently used strategy is used to construct the web service request to process the addition and update strategy of the virtual storage unit,...

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Abstract

The invention discloses a Web service combination method and aims to solve the technical problem of low combination efficiency of the whole system due to masses of redundant operations of the existing Web service combination method. The technical scheme is that a hierarchical storage structure is adopted; according to the trace and analysis on a historic combination request procedure, a combination request which is used most probably in a next combination request and a Web service used by the combination request are respectively stored in two virtual storage units, i.e. a Web service request processing unit and a hot spot Web service unit, of a local combination server and are set to have a priority access right; and when a certain Web service combination request is responded to, the virtual storage units, i.e. the Web service request processing unit, the hot spot Web service and the like, and a local Web service set are accessed sequentially. The Web service combination method avoids masses of redundant operations of repeatedly combining requests and analyzing and performance influence which is caused because the whole actual Web service set is used as a processing object and improves the executing efficiency of the Web service combining process.

Description

technical field [0001] The invention relates to a web service composition method, in particular to a web service composition method based on a layered storage structure. Background technique [0002] The research on Web service composition technology is the key technology to promote SOA from theory to practice. [0003] The document "Effective Web Service Composition in Diverse and Large-Scale ServiceNetworks, IEEE Transactions on Services Computing, 2008, Vol.1(1), p15-32" discloses a Web service composition method combining forward search and backtracking strategies . This method sequentially scans and analyzes the entire Web service according to the content of the Web service composition request, and continuously calculates the minimum number of composition steps that can activate the current Web service according to the current scanning state until all potentially related to the current Web service composition request is scanned. Web service; in the backtracking proces...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06
Inventor 雷万保朱怡安钟冬孙占志迟文明
Owner NORTHWESTERN POLYTECHNICAL UNIV
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