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Hybrid-cache having static and dynamic portions

  • US 7,330,938 B2
  • Filed: 05/18/2004
  • Issued: 02/12/2008
  • Est. Priority Date: 05/18/2004
  • Status: Active Grant
First Claim
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1. A caching method, comprising:

  • caching data received from a data source within a static cache as stable data, the static cache having a fixed size;

    evicting a portion of the stable data within the static cache to a dynamic cache when the static cache reaches a threshold fill level; and

    enrolling the evicted portion of the stable data into the dynamic cache as soft data, the dynamic cache having a dynamically changing size according to availability of memory, where soft data is evicted from the dynamic cache prior to evicting stable data from the static cache if availability of memory is scarce.

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