公开(公告)号：US12032562B1

公开(公告)日：2024-07-09

申请号：US17491029

申请日：2021-09-30

Applicant: Amazon Technologies, Inc.

Inventor： James Zuber ,  Abhishek Kannan ,  Vishwas Narendra ,  Ernest S. Cohen ,  Bryan T. Wilkinson ,  Sameer Choudhary ,  Phillip H. Pruett ,  Nikhil Shah ,  Wilson Li

IPC: G06F16/23 ,  G06F16/22 ,  H04L67/1097

CPC classification number: G06F16/2386 ,  G06F16/2255 ,  G06F16/235 ,  G06F16/2365 ,  H04L67/1097

Abstract: Systems and methods are provided for efficiently maintaining a transaction sequence witness service to ensure that requests to read data provide consistent results across all storage nodes in a distributed system. Each storage node that stores data in response to a particular update event may first update the transaction sequence witness service with the sequence number for the update event. Thus, any other storage node that services a subsequent request for the data will be able to see, via the transaction sequence witness service, the sequence number that must be available on the storage node to respond to the request.