For network transfer data cache resources to high popularity in the router , access to resources in order to improve the problem of transmission efficiency and resource utilization. In this study , to consider the impact of network topology cache , the use of network resources during transmission fixed period of popularity differences, combined with profit and the resource itself proposed network transmission scheme based on probability caching policy PCS (Probabilistic Caching strategy ) of . By request of the resource data path probability cache to improve network transfer performance cache. The simulation shows that the cache policy effectively avoid unnecessary cache non-popular content, when the cache capacity is 5%, the average hit rate of 25%, the average number of hops is only 3.42, in favor of the overall performance of the transmission network upgrade.%针对网络传输过程中数据资源以高流行度缓存在路由器内,以提高资源获取的传输效率和资源利用率的问题.本研究考虑网络拓扑对缓存的影响,利用网络传输过程中固定时间段内资源流行度的差异性,结合资源本身的收益因素,提出一种基于概率缓存策略PCS(Probabilistic Caching strat-egy)的网络传输机制.通过该资源数据请求路径进行概率缓存,以提高网络传输过程中的缓存性能.仿真表明该缓存策略有效地避免了非热门内容的不必要缓存,当缓存容量5%时,平均命中率可达25%,平均跳数仅为3.42,有利于网络传输整体性能的提升.
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