The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2020
Filed:
Sep. 12, 2017
Facebook, Inc., Menlo Park, CA (US);
Kaushik Ravichandran, Seattle, WA (US);
Maxwell T. Sayles, Seattle, WA (US);
Muthukaruppan Annamalai, Redmond, WA (US);
Facebook, Inc., Menlo Park, CA (US);
Abstract
Technology for migrating database shards from a source deployment to a destination deployment can be accomplished while maintaining a particular level of availability, reliability, and consistency. A process for this migration can include setting up destination shards as followers of shards on the source such that the destination shards receive stored data and have write operations mirrored from the source shards to the destination shards. The process can set an epoch counter for the destination shards higher than a corresponding epoch counter for the source shards. Next, the process can disable writing for the source shards. The process can also perform a special write to determine when the source write pipeline is empty. The process can wait for the shard migration to complete, then configure the destination shards to no longer be followers of the source shards, but instead be primary shards to handle database operations for the stored data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile