Patent ID: 9160805
Filing Date: 2015-10-13
Classification: H04L

Abstract:
1. A distribution network for retrieving cached content comprising: a load balancer that receives requests from one or more client computing systems and then routes said content requests to one or more edge routing servers, the load balancer being unaware of where any content corresponding to the content requests may reside in the distribution network; a plurality of edge caching servers each caching content that is mutually exclusive from the cached content of other caching servers; one or more edge routing servers hierarchically situated between the load balancer and the plurality of edge caching servers, and wherein the one or more edge routing servers are configured so that they do not independently cache content, said one or more edge routing servers routing content requests received from said load balancer to one of the plurality of edge caching servers; wherein said routing is performed according to a predictive routing protocol which predicts which of the plurality of edge caching servers contains cached content corresponding to given content request by: