Articles like this are misleading. XML compression will reduce the size of the message and thus reduce the time to transfer the message. But if you've ever done any performance testing and profiling on Web services, you will know that most of the times the performance bottlenecks are not in the message transfer but the XML processing, i.e. parsing the message. Thus, compressing the message will not do you much good. Some may say that in a bandwidth constrained environment, the compression does help. But if you're working in a bandwidth constrained environment, you probably shouldn't even be using such technologies in the first place. What does help tremendously is offloading the XML processing to dedicated XML appliances and the article does point that out.
soa, web services, xml
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