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CONTENT DELIVERY NETWORK CACHE GROUPING

  • US 20110082982A1
  • Filed: 03/26/2010
  • Published: 04/07/2011
  • Est. Priority Date: 10/02/2009
  • Status: Active Grant
First Claim
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1. A method to cache content objects in a content delivery network (CDN) according to an arrangement of using different parent caches for different URIs, the method comprising:

  • receiving a first universal resource indicator (URI) at a cache of an edge server in a first points of presence (POP), wherein the first URI specifies a first content object;

    determining that the cache does not hold the first content object;

    analyzing the first URI to determine a first parent cache;

    requesting the first content object from the first parent cache in a second POP;

    receiving a second URI at the cache of the edge server in the first POP, wherein the second URI specifies a second content object;

    determining that the cache does not hold the second content object;

    analyzing the second URI to determine a second parent cache different from the first parent cache, wherein the second parent cache is in a third POP; and

    requesting the content object from the second parent cache.

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