The Implementation of Mobile Edge Caching over 4G LTE using Varnish Cache and Apache Traffic Server

Wireless network operators continue to strive to meet the ever-increasing data needs of users which reach 4G LTE to date. However, they have not been able to fully meet the demand for low latency. The emerging LTE architecture currently still does not have sufficient system coverage within its network in order to significantly reduce response times. Therefore, a system which is able to provide an optimal experience is important for users of wireless services. This article will provide a solution in the form of a caching system built in-network using the Varnish Cache and Apache Traffic Server Cache methods in order to test the effectiveness of the caching system. Furthermore, Mobile Edge Caching is a promising alternative solution in LTE architecture, with superior performance to improve user experience. There is a very significant difference between the use of Varnish Cache and Apache Traffic Server Cache in implementing caching systems. In addition, cache usage in HTTPS protocol with Apache Traffic Server Cache is more effective than Varnish Cache. However, in the HTTP protocol, Varnish Cache shows more optimal performance than Apache Traffic Server.