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Methods and systems for distributed caching in presence of updates and in accordance with holding times

  • US 20030172236A1
  • Filed: 03/07/2002
  • Published: 09/11/2003
  • Est. Priority Date: 03/07/2002
  • Status: Active Grant
First Claim
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1. A method for managing cached data objects, the method comprising the steps of:

  • storing at least one data object in a central cache;

    replicating the at least one data object in at least one local cache, the at least one local cache being in communication with the central cache;

    maintaining, in accordance with the central cache, a directory describing content of the at least one local cache; and

    in response to a change to cached data, the central cache updating at least a portion of content stored thereon and coordinating an update of at least a portion of content replicated on the at least one local cache using the directory to determine at least one data object in the at least one local cache which should be updated in accordance with the change.

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