Patent ID: 11928099
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A method, comprising:
accessing, by one or more computing devices of a distributed data store, a plurality of updates to respective items in a data set stored in a change log ordered by respective time values assigned to the plurality of updates;
updating, by the one or more computing devices, an in-memory table to include the respective items according to the plurality of updates with respective time values;
detecting, by the one or more computing devices, an event to seal the in-memory table from subsequent updates, wherein the subsequent updates are stored in the change log and used to update a new in-memory table;
generating, by the one or more computing devices, a persistent data object that orders the respective items according to both respective keys of the respective items and the respective time values; and
storing, by the one or more computing devices, the persistent data object as part of a backup of the data set.