Patent ID: 11886439
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. One or more non-transitory, computer-readable storage media, storing program instructions that when executed on or across one or more computing devices cause the one or more computing devices to implement a single database that implements:
asynchronous to a plurality of updates performed at the single database by two or more head nodes of the single database:
evaluating respective logs of the two or more head nodes that describe the plurality of updates performed at the single database for different database transactions to generate indications of changes to the database performed by the two or more head nodes;
grouping, in a memory of a primary head node of the two or more head nodes according to the different database transactions, respective ones of the indications of the changes generated from the respective logs of the two or more head nodes to generate a plurality of grouped indications of the changes to the single database, wherein individual ones of the plurality of grouped indications of the changes correspond to respective ones of the different database transactions performed by respective head nodes of the two or more head nodes; and
after determining that one or more of the different database transactions are committed to the single database, sending, from the memory of the primary head node directly to a stream processor external to the single database, the respective grouped indications of the changes of the committed one or more database transactions performed by the two or more head nodes.