Improving the performance of content delivery networks based on the Shuffled Frog Leaping

Content distribution networks are very useful because they use cache, repeat contents and request of users to the best servers. Their main purpose is to improve efficiency in delivering content, reducing response time, increasing bandwidth and availability based services of internet. it is important to investigate the challenges of these networks to solve them. in this study, a method for improving the routing of these networks is based on the evolutionary algorithm of frog mutation. The reasons behind the delay in response of the user's request in these networks are high on servers and finding the best answer route. In fact, to answer requests, the server and optimal response path must be specified so that the response time delay is minimized. in order to solve this problem, the proposed method uses frog mutation algorithm to optimize this search. in the simulation section, the best parameters were performed and the best parameter values were determined. finally, the proposed method was compared with the basic and identical methods and the desired result in time, average response time to users ' request has been improved by servers as compared to other methods.