This paper investigates into the transmission cost of web services related messages which is affected by network\ud latency. Web services enable seamless interaction and integration of e-business applications. Web services contain a\ud collection of operations so as to interact with outside world over the Internet through XML messaging. Though XML\ud effectively describe message related information and is fairly human readable, it badly affects the performance of Web\ud services in terms of transmission cost, processing cost, and so on. This paper aims to minimize network latency of message\ud communication of Web services by employing pre-emptive resume scheduling. Fundamental principle of this approach is the\ud provision of preferential treatment to some messages as compared to others. This approach assigns different priorities to\ud distinct classes of messages given the fact that some messages may tolerate longer delays than others. For instance, shorter\ud messages may be given higher priority than longer messages, or the Web service provider may give higher priority to the\ud messages of paying subscribers
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