公开(公告)号：US10810184B1

公开(公告)日：2020-10-20

申请号：US14573571

申请日：2014-12-17

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Andrew Christopher Schleit ,  Nicolas Valere Choumitsky ,  Sean Robert Connell ,  Aaron Ben Fernandes ,  Arjan Xeka

IPC: G06F16/00 ,  G06F16/23

Abstract: Described are techniques for reducing inaccurate values in databases by managing the order in which processes are enqueued and executed. A modification process to modify a first value in a database may be received. A precomputation process that modifies values dependent on the first value may be enqueued prior to enqueuing of the modification process to ensure that the modification process does not occur if the precomputation process fails. The modification process may be executed prior to executing the precomputation process to ensure that the precomputation process acts to modify the dependent values using the modified version of the first value.

公开(公告)号：US10783132B1

公开(公告)日：2020-09-22

申请号：US14974682

申请日：2015-12-18

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Andrew Christopher Schleit ,  Andrei N. Krotkov ,  Shen Li

IPC: G06F16/23 ,  G06F16/248 ,  G06F16/25 ,  G06F16/9535 ,  G06F16/2457

Abstract: Described are techniques for maintaining the accuracy of a precomputed output by determining sets of instructions for accessing and extracting values from individual data sources used to determine the output. Responsive to the determination of a modification to data in the data source, the data sources may be accessed to determine values that may be used to modify the precomputed output. The sets of instructions for accessing the data sources may be determined based on the relationships between different data sources and between one or more data sources and the output.