Execution Mechanism of Service Proxy in Web Services Composition Execution Engine

Author

Gao, Chunming ; Yuan, Xiaojuan ; Chen, Huowang

Author_Institution

Hunan Normal Univ., Changsha

Volume

1

fYear

2007

fDate

24-27 July 2007

Firstpage

647

Lastpage

648

Abstract

Two problems in web services composition has been tackled in this paper: firstly, decoupling flow execution and web services invocation in web services composition execution engine - WebJetFlow; secondly, changing services invocation model of service proxy from synchronous invocation model to pure asynchronous invocation model. Then NS2 has been adopted to test the performance of WebJetFlow under five different circumstances as well as the performance of WebJetFlow with service proxy and without service proxy respectively. The simulation results show that the access throughputs of WebJetFlow with service proxy are larger than those without service proxy under the same thread resources. Moreover, decoupling flow execution and web services invocation and using pure asynchronous invocation model greatly increase the concurrence of flow execution, enhance the utilization efficiency and improve the performance of WebJetFlow.

Keywords

Web services; Web services composition; Web services invocation; WebJetFlow; execution engine; execution mechanism; flow execution decoupling; service proxy; Analytical models; Computer applications; Computer science; Engines; Mathematical model; Testing; Throughput; Topology; Web services; Yarn;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Software and Applications Conference, 2007. COMPSAC 2007. 31st Annual International

Conference_Location

Beijing

ISSN

0730-3157

Print_ISBN

0-7695-2870-8

Type

conf

DOI

10.1109/COMPSAC.2007.112

Filename

4291075