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Caching protocol method and system based on request frequency and relative storage duration

  • US 6,425,057 B1
  • Filed: 08/27/1998
  • Issued: 07/23/2002
  • Est. Priority Date: 08/27/1998
  • Status: Expired due to Fees
First Claim
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1. A method of caching objects and replacing cached objects comprising:

  • receiving a plurality of objects from remote sites via network connections, the objects being directed to target devices, storing at least some of the objects in local cache, thereby providing cached objects that are accessible without reconnecting to the remote sites;

    maintaining dynamic indicators for at least some of the cached objects, where different dynamic indicators correspond to different cached objects, each dynamic indicator being responsive to a frequency of requests for a corresponding cached object by the target devices and being indicative of a time of storing the corresponding cached object in the local cache relative to storing other cached objects in the local cache such that a determination for each dynamic indicator is at least partially based on a storage occurrence of the corresponding cached object relative to storage occurrences of other cached objects; and

    selectively replacing cached objects with recently received objects based upon the dynamic indicators such that the cached objects are removed from the local cache on the basis of frequencies of requests and relative times of storing said cached objects.

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