Patent ID: 8965997
Filing Date: 2015-02-24
Classification: G06F,H04L

Abstract:
1. A method for retrieving content objects in a content delivery network (CDN) having a plurality of points of presence (POPs) distributed geographically by checking different parent caches for different content objects, the method comprising: receiving a first request comprising a first universal resource identifier (URI) at a first edge server having a first cache wherein: determining that the first cache does not hold the first content object; determining a first hierarchical tree of caches based on a characteristic of the first content object, wherein: retrieving the first content object from the first parent cache based on determining the first hierarchical tree of caches; receiving a second request comprising a second URI at the first edge server, wherein the second URI specifies a second content object; determining that the first cache does not hold the second content object; determining a second hierarchical tree of caches based on a characteristic of the second content object, wherein: retrieving the second content object from the second parent cache based on determining the second hierarchical tree of caches.