Politica de Substituição Dinâmica em Caches para Web

Roberto Ferreira BrandãoRicardo de Oliveira Anido

The use of caches in document transmission systems in the Web makes possible to decrease the load of requisitions submited to the transmission means and to servers of documents, reducing the user's wait time when searching for documents. In web cache systems, a copy of a requested document is stored in the cache and, if new requisitions to that document ocour, those requisitions can be answered using the copy stored in the cache. One of the most important parameters related to web caches is the substitution policy. This is an algorithm that decides which document will be removed from cache to store a new one when there is no more free space. This paper presents a new substitution policy that uses, dinamically, both size and time since last requisition, increasing the efficiency of the cache system.

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Biblioteca Digital Brasileira de Computação - Contato:
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