id: 05523002 dt: j an: 05523002 au: Feng, Wenying; Zhang, Yong ti: A birth-death model for Web cache systems: numerical solutions and simulation. so: Nonlinear Anal., Hybrid Syst. 2, No. 2, 272-284 (2008). py: 2008 pu: Elsevier, Oxford la: EN cc: ut: Web cache; birth-death process; LRU; state transition; fixed point ci: li: doi:10.1016/j.nahs.2006.04.012 ab: Summary: We study Web cache hit rates by introducing a birth-death model. A system consisting of a single Web server with a single cache stores Web pages that are classified as hot pages (popular pages) and cold pages (less popular pages). Given requested probabilities for each class, the stochastic model provides the mean hit rate for a random replacement algorithm and upper and lower bounds for other algorithms. Numerical results from the analysis are validated using the output of simulation programs that utilize the Least Recently Used (LRU) algorithm. rv: