Research on Content Priority-Based Caching Strategy in NDMANET

Most research on NDMANET cache strategy does not take the priority of content into consideration, which will affect the usability of important content in the mobile environment. Aiming at solving this problem, this paper proposes a cache replacement strategy based on content priority. First, the content is prioritized according to the different needs for the availability of different content. Then, the priority of the content is used as a reference factor for cache replacement to make a cache replacement decision, and the goal is to improve the hit rate and availability of important content. At the same time, the simulation results of ndnSIM show that the strategy can significantly increase the number of cached important content without affecting the global hit rate and response delay, thereby improving the availability of important content.