Patent ID: 11914571
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A method, comprising:
performing by a first database engine head node:
sending, responsive to receiving an access request from a client, a first write request to a log-based data store for a database to perform the access request on behalf of the client, the first write request comprising an update to data of the database;
receiving, from the log-based data store, a response to a first write request comprising one or more indications of a detected conflict at the log-based data store between the update to the data of the database and another update to the data of the database a second write request to the database sent to the log-based data store by a second database engine head node, the one or more indications of the detected conflict indicating that the first write request sent to the log-based data store conflicts with the second write request sent to the log-based data store;
requesting a resolution of the indicated conflict from a primary write database engine head node for the database;
receiving a resolution from the primary write database engine head node indicating the first write request is to be committed; and
causing the log-based data store to commit the first write request instead of the second write request according to
the resolution received from the primary database engine head node.