An intelligent prefetching and caching system for picture sharing system

This paper propose a two-step prefetching and active-passive prefetching and caching scheme to decrease the network delay in picture sharing system between smart devices. The scheme use the time that network is idle to prefetch data, reduce users´ waiting time. It uses two-step prefetching to reduce bandwidth consumption, use active-passive prefetching to improve prefetching accuracy and efficiency. The experiment shows that this scheme can reduce user waiting time by 58.2%, improve prefetching shoot to 92%, and reduce the unused bandwidth to 5%.