A rule-based approach for availability of service by automated service substitution
High availability of software components has long been studied. For a software system, when unavailability of a component has caused a suspension of the system, the system has to be recovered or resumed as soon as possible. To substitute an unavailable software component with a backup copy is theref...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/96988 http://hdl.handle.net/10220/12034 |
| _version_ | 1826118615110254592 |
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| author | Liang, Qianhui Lee, Bu-Sung Hung, Patrick C. K. |
| author2 | School of Computer Engineering |
| author_facet | School of Computer Engineering Liang, Qianhui Lee, Bu-Sung Hung, Patrick C. K. |
| author_sort | Liang, Qianhui |
| collection | NTU |
| description | High availability of software components has long been studied. For a software system, when unavailability of a component has caused a suspension of the system, the system has to be recovered or resumed as soon as possible. To substitute an unavailable software component with a backup copy is therefore unavoidable in achieving high availability of software systems. In this paper, in comparison with using redundancies, we take an alternative approach that steps away from the physical code equivalence of the software but focuses more on the equivalence in using the function unit without concerning about the implementation itself. We investigate the problem of Web service availability in service-oriented software systems and then report a framework for Web service availability in such systems using automated and rule-based Web service substitution. The framework takes a novel approach to manage the runtime replacement of services, combining (i) an approach that classifies services using co-occurrence of terms in various tags of the service descriptions, (ii) an approach to establish the compatibility and substitution of service operation interfaces and (iii) a middleware for handling service replacements. Our approach is designed to address the problem of Web service availability from the client side and assumes that the client has no control of the Web service providers. This is a completely distributed approach in comparison with other related work and presents a valuable benefit of client orientation. As two additional distinguishing characteristics, our framework also meets the challenges of (i) semantic heterogeneity of Web services in identifying substitute service and (ii) transparency and independence in handling unavailability at the level of Web services. We show in our experiments that the service substitute identification based on the proposed framework achieves a best precision of 85%. We demonstrate our implementation of the middleware for service unavailability handling in the framework. We also present experiments on service substitution within a demo business application in the presence of unavailability. |
| first_indexed | 2024-10-01T04:46:43Z |
| format | Journal Article |
| id | ntu-10356/96988 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:46:43Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/969882020-05-28T07:18:56Z A rule-based approach for availability of service by automated service substitution Liang, Qianhui Lee, Bu-Sung Hung, Patrick C. K. School of Computer Engineering DRNTU::Engineering::Computer science and engineering High availability of software components has long been studied. For a software system, when unavailability of a component has caused a suspension of the system, the system has to be recovered or resumed as soon as possible. To substitute an unavailable software component with a backup copy is therefore unavoidable in achieving high availability of software systems. In this paper, in comparison with using redundancies, we take an alternative approach that steps away from the physical code equivalence of the software but focuses more on the equivalence in using the function unit without concerning about the implementation itself. We investigate the problem of Web service availability in service-oriented software systems and then report a framework for Web service availability in such systems using automated and rule-based Web service substitution. The framework takes a novel approach to manage the runtime replacement of services, combining (i) an approach that classifies services using co-occurrence of terms in various tags of the service descriptions, (ii) an approach to establish the compatibility and substitution of service operation interfaces and (iii) a middleware for handling service replacements. Our approach is designed to address the problem of Web service availability from the client side and assumes that the client has no control of the Web service providers. This is a completely distributed approach in comparison with other related work and presents a valuable benefit of client orientation. As two additional distinguishing characteristics, our framework also meets the challenges of (i) semantic heterogeneity of Web services in identifying substitute service and (ii) transparency and independence in handling unavailability at the level of Web services. We show in our experiments that the service substitute identification based on the proposed framework achieves a best precision of 85%. We demonstrate our implementation of the middleware for service unavailability handling in the framework. We also present experiments on service substitution within a demo business application in the presence of unavailability. 2013-07-23T03:20:54Z 2019-12-06T19:37:38Z 2013-07-23T03:20:54Z 2019-12-06T19:37:38Z 2012 2012 Journal Article Liang, Q., Lee, B.-S., & Hung, P. C. K. (2012). A rule-based approach for availability of service by automated service substitution. Software: Practice and Experience. 0038-0644 https://hdl.handle.net/10356/96988 http://hdl.handle.net/10220/12034 10.1002/spe.2155 en Software : practice and experience © 2012 John Wiley & Sons, Ltd. |
| spellingShingle | DRNTU::Engineering::Computer science and engineering Liang, Qianhui Lee, Bu-Sung Hung, Patrick C. K. A rule-based approach for availability of service by automated service substitution |
| title | A rule-based approach for availability of service by automated service substitution |
| title_full | A rule-based approach for availability of service by automated service substitution |
| title_fullStr | A rule-based approach for availability of service by automated service substitution |
| title_full_unstemmed | A rule-based approach for availability of service by automated service substitution |
| title_short | A rule-based approach for availability of service by automated service substitution |
| title_sort | rule based approach for availability of service by automated service substitution |
| topic | DRNTU::Engineering::Computer science and engineering |
| url | https://hdl.handle.net/10356/96988 http://hdl.handle.net/10220/12034 |
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