Fault tolerant web service

  • Authors:
  • Deron Liang;Chen-Liang Fang;Chyouhwa Chen;Fengyi Lin

  • Affiliations:
  • -;-;-;-

  • Venue:
  • APSEC '03 Proceedings of the Tenth Asia-Pacific Software Engineering Conference Software Engineering Conference
  • Year:
  • 2003

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Abstract

Zwass suggested that middleware and message serviceis one of the five fundamental technologies used torealize Electronic Commerce (EC) [26]. The SimpleObject Access Protocol (SOAP) is recognized as a morepromising middleware for EC applications among otherleading candidates such as CORBA. Many recent pollsreveal however that security and reliability issues aremajor concerns that discourage people from engaging inEC transactions. We notice that the fault-tolerance issueis somewhat neglected in the current standard, i.e.,SOAP 1.1 [23]. We therefore propose a fault tolerantweb service called fault-tolerant SOAP or FT-SOAPthrough which web services can be built with higherresilience to failure. FT-SOAP is based on our previousexperience with an object fault tolerant service (OFS)[10] and OMG's fault tolerant CORBA (FT-CORBA)[17]. There are many architectural differences betweenSOAP and CORBA. One of the major contributions ofthis work is to discuss the impact on FT-SOAP designdue to these architectural differences. Our experienceshows that web services built on a SOAP frameworkenjoy higher flexibility as opposed to those built onCORBA. We also point out the limitations of the currentfeature sets of SOAP 1.1. We believe our experience isvaluable not only to the fault-tolerance community, butalso to other communities as well, in particular, to thosewho are familiar with the CORBA platform.