A Region Collaborative Method for Caching Based on Node Clustering

In order to solve the problem of low hit rate caused by limited computing resources and insufficient storage resources of CDN distributed edge cache nodes, we propose a region collaborative method for CDN cache based on edge cache node clustering. According to the attributes of node cache content, node position and node network communication capability, established a node cache content similarity measurement model and a node cache sharing capability measurement model, completed the cache node clustering according to the cache difference principle, and on the basis of node clustering, proposed a CDN region cache collaborative method based on the collaborative domain. Compared with the traditional CDN cache method, the method can effectively improve the area support capability of the CDN system and improve the hit rate of the edge cache nodes, and has certain reference significance for multinode cache collaboration in a complex mobility environment.