Aumentando o desempenho de caches para Web hierárquicos

Roberto Ferreira BrandãoRicardo de Oliveira Anido

Although many research works try to increase web caches performance, in many cases, a great performance increase on a particular web cache might not generate a significant performance improvement in the whole cache network. That happens because popularity characteristics in the requisitions stream are usually destroyed by replacement policies when that stream passes trough a low level cache. That makes the high level caches to keep files whose popularity is not among the highest ones. This paper presents the strategy named "Passagem de Recomendação". It can be used by low level caches to avoid losing popularity characteristics of the requisitions streams. That strategy makes it possible to high level caches to guarantee that their efforts will be used to improve hit ratio among the real most popular files.

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