Content delivery and the natural evolution of DNS
John Solomon Otto, Mario A. Sánchez, John P. Rula, Fabián E. Bustamante · 2012
Content Delivery Networks (CDNs) rely on the Domain Name System (DNS) for replica server selection. DNS-based server selection builds on the assumption that, in the absence of information about the client's actual network location, the location of a client's DNS resolver provides a good approximation. The recent growth of remote DNS services breaks this assumption and can negatively impact client's web performance.