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Akamai Assigned Patent

Quarantine and repair of replicas in quorum-based storage system

Akamai Technologies, Inc., Cambridge, MA, has been assigned a patent (10,120,924) developed by Wong, Kai C, Saratoga, CA, Lisiecki, Philip A, Santa Barbara, CA, and Chiu, Sung, Los Altos, CA, for “quarantine and repair of replicas in a quorum-based data storage system.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A data storage system with quorum-based commits sometimes experiences replica failure, due to unavailability of a replica-hosting node, for example. Described herein are methods and systems for improving data persistence and availability in a distributed data store where data is stored in a plurality of shards and a given shard is replicated across a plurality of nodes so as to create a plurality of replicas, and a quorum of replicas is needed for access to the given shard. Among other things, the methods and systems generally involve determining whether to quarantine or delete unavailable replicas in a given shard, and how to handle purge requests related to the shard when there are quarantined replicas.

The patent application was filed on November 17, 2014 (14/543,507).

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