作者: Nicaise Choungmo Fofack , Sara Alouf
DOI: 10.4108/ICST.VALUETOOLS.2013.254416
关键词:
摘要: Caching is undoubtedly one of the most popular solution that easily scales up with a world-wide deployment resources. Records in Domain Name System (DNS) caches are kept for pre-set duration (time-to-live or TTL) to avoid becoming outdated. Modern those set locally TTL regardless what authoritative servers say. In this paper, we introduce analytic models study modern DNS cache behavior based on renewal arguments. For tree networks, derive performance metrics, characterize at each miss process and aggregate request process. We address problem optimal caching find constant best only if inter-request times have concave CDF. validate our theoretical findings using real traces (single case) via event-driven simulations (network case). Our very robust as relative error between empirical values stays within 1% former case less than 5% latter case.