Caching web services in mobile ad-hoc networks: opportunities and challenges
Proceedings of the second ACM international workshop on Principles of mobile computing
Caching XML Web Services for Mobility
Queue - Wireless
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ICDCS '04 Proceedings of the 24th International Conference on Distributed Computing Systems (ICDCS'04)
Efficient SOAP message exchange and evaluation through XML similarity
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Evolutionary optimization of service times in interactive voice response systems
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International Journal of Web Services Research
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Journal of Electronic Commerce in Organizations
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PDAs have evolved over the years from resource constrained devices that supported only the most basic tasks to powerful handheld computing devices. However, the most significant step in the evolution of PDAs was the introduction of wireless connectivity which enabled them to host applications that require internet connectivity like email, web browsers and maybe most importantly smart/rich clients. Being able to host smart clients allows the users of PDAs to seamlessly access the IT resources (e.g. legacy apps) of their organizations. One increasingly popular way of enabling access to IT resources is by using Web Services (WS) [14]. This trend has been aided by the rapid availability of Web Service (WS) packages/tools, most notably the efforts of the Apache group [1] and IDE vendors (e.g., Microsoft's Visual Studio [2], IBM's Eclipse [3]). Using IDE tools and other software packages it is fairly easy for programmers to expose application interfaces and/or consume existing interfaces leading to a gradual replacement of the current web server centric approaches (e.g. ASP, JSP, Servlets, CGI scripts) with WS centric approach. This paper focuses on the challenges of enabling PDAs to host Web Services consumers and introduces a dual caching approach to overcome problems arising from temporarily loss of connectivity and fluctuations in bandwidth.