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Managing cached information corresponding to a distributed storage system

  • US 9,875,212 B1
  • Filed: 01/27/2014
  • Issued: 01/23/2018
  • Est. Priority Date: 07/31/2009
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • non-transitory data storage comprising a data cache, the data cache including a cached version of a first information item stored within a distributed storage system; and

    a first coordinator computing device comprising a processor, the first coordinator computing device being included within a plurality of coordinators configured to facilitate access to data on the distributed storage system, the first coordinator computing device in communication with the data cache and associated with a first coordinator identifier identifying information on the distributed storage system that the first coordinator computing device has most recently modified, the first coordinator computing device configured to;

    receive a request from a client computing device for the first information item;

    obtain a generations identifier identifying one of the plurality of coordinators that most recently modified the first information item;

    process the generations identifier to determine that the generations identifier matches the first coordinator identifier; and

    in response to the determination that the generations identifier matches the first coordinator identifier, transmit the cached version of the first information item to the client computing device.

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