System and method for maintaining a master replica for reads and writes in a data store

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United States of America Patent

PATENT NO 11899684
SERIAL NO

17472445

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Abstract

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A system that implements a data storage service may store data on behalf of clients in multiple replicas on respective computing nodes. The system may employ an external service to select a master replica for a replica group. The master replica may service consistent read operations and/or write operations that are directed to the replica group (or to a data partition stored by the replica group). The master replica may employ a quorum based mechanism for performing replicated write operations, and a local lease mechanism for determining the replica authorized to perform consistent reads, even when the external service is unavailable. The master replica may propagate local leases to replica group members as replicated writes. If another replica assumes mastership for the replica group, it may not begin servicing consistent read operations that are directed to the replica group until the lease period for a current local lease expires.

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Patent Owner(s)

Patent OwnerAddress
AMAZON TECHNOLOGIES INCWASHINGTON STATE WASHINGTON

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lutz, David Alan Renton, US 37 484
Rath, Timothy Andrew Seattle, US 99 2246

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