A Secondary Market (SM) mechanism is used to allow the exchange of
unused resources between Origin Servers (content-generating entities) that claim
and reserve resources from Content Delivery Networks (CDNs). Using a Predictive
Reservation Scheme, network and disk resources are being monitored through wellestablished techniques (Kernel Regression Estimators) in a given time frame. We
show that the SM mechanism significantly improves the efficiency and robustness of
our Predictive Reservation Scheme by allowing fast exchange of unused resources
between the Origin Servers (CDN Clients), either by implementing socially optimal
practices or by allowing automatic electronic auctions at the end of day (EOD) or at
shorter time intervals. Therefore, all the involved players (including the CDN itself)
benefit from the rationalized use of CDN resources.

• A secondary market metaphor for content delivery networks