Measuring and Evaluating Large-Scale CDNs

Very interesting paper, it shows the different design choices for CDNs and their current deployment scale and performance. It is interesting that CDNs do not necessarily redirect to the lowest delay servers (but use other metrics also) and that they also use IP anycast. Another interesting aspect of the paper is that it measures the marginal gains of each datacenter and that offers a good starting point for new CDNs on how to deploy their network (lowering a bit the barrier to entry).