Reduce response time in content delivery networks with a hybrid method

One of the effective factors in the efficiency of content distribution networks is finding an optimal placement and proper content delivery. Most previous research has been done separately on these two methods and in general, caching in proxy and duplicate server systems have been studied as one of the mechanisms in content delivery networks. In this paper, with combining replication and caching techniques a hybrid method is presented. This method uses replication and caching benefits and in each iteration, all possible contents are evaluated and according to the conditions, the best ones are selected and replicated. The proposed method is tested in a simulation environment and the results show that compared to the methods based on replication and caching, it has been able to reduce the response time by an average of ۲۰%.