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Internet protocol version 6 content routing

  • US 9,167,032 B2
  • Filed: 10/07/2014
  • Issued: 10/20/2015
  • Est. Priority Date: 03/22/2010
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a memory that stores instructions;

    a processor that executes the instructions to perform operations, the operations comprising;

    determining a load for a local cache server located in a first cache server location, wherein the load comprises central processing unit information, memory utilization, a number of concurrent requests being served, and an amount of available bandwidth;

    determining when the local cache server is available, wherein the local cache server is available for only a local request for content when the load is below an upper threshold and above a lower threshold for the local cache server, wherein the local cache server is available for both the local request and a transferred request when the load is below the lower threshold, and wherein the local cache server is not available when the load exceeds the upper threshold for the local cache server;

    forwarding, when the local cache server is determined to not be available, a content request for the content to a redirector in a second cache server location, wherein the content request is redirected from the redirector to a highest ranked alternate cache server location selected from a ranked list of alternate cache server locations;

    transmitting, in response to the content request, a response including a unicast address as a source address, a unicast address of a client system as a destination address, and an internet protocol version 6 anycast address as a home address; and

    providing, in response to the content request and via the highest ranked alternate cache server location, the content to the client system.

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