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Research Article Open Access
Caching is a technique first used by memory management to reduce bus traffic and latency of data access. Web traffic has increased tremendously since the beginning of the 1990s.With the significant increase of Web traffic, caching techniques are applied to Web caching to reduce network traffic, user perceived latency, and server load by caching the documents in local proxies. In this paper, analization of both advantages and disadvantages of some current Web cache replacement algorithms including lowest relative value algorithm, least weighted usage algorithm and least unified-value (LUV) algorithm is done. Based on our analysis, we proposed a new algorithm, called least grade replacement (LGR), which takes recency, frequency, perfect-history, and document size into account for Web cache optimization. The optimal recency coefficients were determined by using 2- and 4-way set associative caches. The cache size was varied from 32 k to 256 k in the simulation. The simulation results showed that the new algorithm (LGR) is better than LRU and LFU in terms of hit ratio (BR) and byte hit ratio (BHR).
web mining, cache mining, web cache, proxy cache, Applied Electronics,Applied Sciences,Biochemistry,Biogenetic Engineering,Biomedical Engineering,Botany,Fluid Dynamics,Chromatography Techniques.