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System and method for invalidating data in a hierarchy of caches

  • US 20050055508A1
  • Filed: 12/02/2003
  • Published: 03/10/2005
  • Est. Priority Date: 09/05/2003
  • Status: Active Grant
First Claim
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1. A computer-implemented method of piggybacking a message invalidating cached data on a response to a data request, the method comprising:

  • in a hierarchy of caches, passing a data request toward a data server;

    at an upstream cache, detecting the invalidation of a set of data cached on one or more downstream caches, including a first downstream cache;

    in a response to the data request, including a message to the first downstream cache to invalidate the set of data; and

    forwarding the response toward the first downstream cache.

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