Measurements of Web Caching and Applications

Two metrics are commonly utilized in the performance evaluation of Web caching replacement policies: hit ratio and byte hit ratio. Most of the researches made the assessment by only considering one of the two metrics or based on the experimental results, and have the limitation of lacking the performance evaluation from the viewpoint of relationship between the two metrics, which is discussed in detail in the paper. A new Web caching performance metric: file-byte ratio (FBR) is proposed which can be used as a performance measurement of Web caching replacement policies from several aspects. FBR can also be made use of in the Web prefetching area so as to provide a basis for an efficient Web caching management