Amazon Technologies, Inc.

Richrelevance, Inc.

Murtaza Doctor

Tate Andrew Certain

Douglas Brian Terry

David Lee Selinger

Tyler David Kohn

Richard Shawn Bice

Ramanathan Padinjarel Somanathan

Derek William Richard Chen-Becker

Arijit Choudhury

Sanjay Shanthakumar

Rashmi Krishnaiah Setty

Ray Manpreet Singh Matharu

Abhijeet More

Sudhir Konduru

Asmita Barve

Jason Zien

Sanket Vishram Chandorkar

Timothy Matthew Lewis

Hina Naseer

Karthikeyani Palanisami

A geographically distributed system using a hybrid, multi-master design is disclosed. The system may use global tables, for which both reads and writes may be performed locally, but with a single region serving as a master region. All strongly consistent reads and writes may be sent to the master region, whereas eventually consistent reads and writes may be performed in any region with a replica. The master region may not be statically assigned but may move from region to region. The master region may be assigned manually by client preference or may be assigned and updated automatically based on the time of day or workload characteristics.

Multi-region, multi-master replication of database tables

Techniques are described for determining personalized category-based product information for a user. The described techniques may in some situations be used by or on behalf of an online retailer to determine a sorted order of at least some products within a product category for the online retailer to display to a customer user on a category-specific Web page of the online retailer, such as based on a browse request by the customer for that category or on another identification of the category by the customer. The determination of particular personalized category-based sorted products for such a customer may in some situations be performed based at least in part on prior activities of the customer, including prior interactions by the customer with the online retailer (e.g., actions by the customer to view and/or purchase particular products, product brands, product sub-categories, product sizes, etc.).

Performing personalized category-based product sorting

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Fremont, CA, United States of America

Murtaza Doctor