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Proxy caches are widely used in wide-area network environment (Internet) to improve the performance of client-server architectures. However, the use of caches also introduces a coherence problem. To maintain coherence, World Wide Web (WWW) caches use coherence protocols, which can either be proxy or server oriented.
In this paper, we present a new adaptive WWW cache coherence protocol that combines both the proxy-oriented and the server-oriented protocols. The adaptive protocol keeps track of objects changes in order to improve coherence and to reduce network traffic. Basic mechanisms of the adaptive protocol are described, as well as the results of performance comparison with other known proxy-oriented and server oriented solutions
Cache coherence; proxy-oriented coherence protocols; server-oriented coherence protocols; adaptive cache coherence protocols; wide-area network; Internet
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