Amazon Technologies, Inc.

Aaron Drew Alexander Kujat

Jason Curtis Jenks

Weinan Wang

Maxym Kharchenko

Min Zhu

Joseph Elmar Magerramov

Bruce Ferry

Zhiyu Zhang

Avinash Chandra Saxena

Alessandro Gherardi

Aravanan Sivaloganathan

Joel Christopher Mosby

Techniques for predicted performance may be provided. For example, a computing service may be implemented to analyze information about past performances of merchants associated with providing items to consumers. Based on the analysis, the computing service may generate a performance prediction model. Further, the computing service may use the performance prediction model to determine a predicted performance for a particular merchant. Information about the predicted performance may be provided to various users including, for example, consumer and merchants.

Predicting performance for providing an item

Disclosed are various embodiments for increasing distributed database capacity by adding new nodes while minimizing downtime. A database is partitioned among multiple nodes in a cluster. Each node stores a respective portion of the database. The portions of the database are replicated to corresponding physical standbys. For each portion, a first portion is mapped to an existing node, while a remaining portion is mapped to a physical standby. The cluster is updated to include the physical standbys as additional nodes among which the database is partitioned.

Increasing distributed database capacity

Disclosed are various embodiments for facilitating data redistribution in database sharding. A database is maintained that is horizontally partitioned into a set of first buckets using modulo-based assignments. A fixed number of the first buckets are stored in each of multiple physical data stores. The database is repartitioned into a set of second buckets using modulo-based assignments. The number of second buckets in the set is a multiple of the sum of a positive integer and the quantity of the physical data stores. The data in the database is unmoved between the physical data stores by repartitioning.

Facilitating data redistribution in database sharding

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Issaquah, WA, United States of America

Aaron Drew Alexander Kujat