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Cached data replication for cache recovery

  • US 9,880,909 B2
  • Filed: 05/19/2016
  • Issued: 01/30/2018
  • Est. Priority Date: 12/19/2012
  • Status: Active Grant
First Claim
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1. Non-transitory computer storage having stored thereon instructions that, when executed by a computer system, cause the computer system to perform operations comprising:

  • identifying, by a computing system, a subset of cached data in a caching structure, the caching structure residing in memory on the computing system;

    storing the identified subset of the cached data in a snapshot file in a persistent storage, wherein in response to a restart of the computing system, data stored in the snapshot file can be loaded into the caching structure;

    determining a percentage of cached data items stored in the snapshot file that exceed a measure of age; and

    updating at least a portion of the data stored in the snapshot file in response to the percentage exceeding a threshold value.

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