Applying an effective model for VNPT CDN

Most operations of Content Distribution Network (CDN) have measured to evaluate the ability to serve users with content or services they want. Activity measurement process provides the ability to predict, monitor and ensure activities throughout the CDN. Five parameters or regular measurement units are often used by content providers to evaluate the operation of CDN including Cache hit ratio, reserved bandwidth, latency, surrogate server utilization and reliability. There are many ways to measure CDN activities, one which use simulation tools. The simulation CDN is implemented using software tools that have value for research and development, internal testing and diagnostic CDN performance, because of accessing real CDN traces and logs is not easy due to the proprietary nature of commercial CDN. In this article, we will apply a CDN simulation model (based on [CDNSim; 2007]) for design a CDN based on the network infrastructure of Vietnam Posts and Telecommunications Group (VNPT Network).