公开(公告)号：US10032229B1

公开(公告)日：2018-07-24

申请号：US14171223

申请日：2014-02-03

Applicant: Amazon Technologies, Inc.

Inventor： Qiang Yu ,  David C. Jernberg ,  Joseph E. Magerramov

IPC: G06Q40/00 ,  G06Q20/10

Abstract: Disclosed are various embodiments for employing spillover tables that may improve the performance of data store updates. In some embodiments, transaction data that specifies a value by which to adjust a field in a data table is received. The field in the data table is associated with a predefined constraint. An attempt to obtain an exclusive lock for at least a portion of the data table is initiated. Whether the value has a potential to cause the predefined constraint to remain satisfied is identified. The transaction data is stored in a spillover table in response to a failure to obtain the exclusive lock and in further response to the value having the potential to cause the predefined constraint to remain satisfied.