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Enhancing XML-cache Efficiency by XML Compression

Whenever a client with limited resources frequently has to retrieve large parts of a huge XML document that is stored on a remote web server, data exchange from the server to the client in combination with restricted bandwidth may become a serious bottleneck. We present an approach that combines the advantages of caching with the advantages of query-capable and updatable XML compression. We provide a performance evaluation that demonstrates that the combination of the two techniques – caching and compression – yields a benefit in terms of less data volume to be transferred as well as in terms of a reduced answer time for the user. The performance evaluation demonstrates that combining both technique yields an even stronger benefit than each technique alone.