公开(公告)号：US11921699B1

公开(公告)日：2024-03-05

申请号：US18067676

申请日：2022-12-16

Applicant: Amazon Technologies, Inc.

Inventor： Upendra Govindagowda ,  Anand Kumar Thakur ,  David Charles Wein ,  Alexandre Olegovich Verbitski ,  James C Nasby ,  Hong Yang ,  Gaurav Kumar Gupta

IPC: G06F16/00 ,  G06F16/11 ,  G06F16/21 ,  G06F16/23 ,  G06F16/27 ,  G06F11/20

CPC classification number: G06F16/2365 ,  G06F16/11 ,  G06F16/219 ,  G06F16/2322 ,  G06F16/27 ,  G06F11/2023 ,  G06F2201/84

Abstract: Lease-based consistency may be implemented for databases to handle failovers. A database node may obtain a consistency lease that describes a point in time determined from a time-to-live amount added to a consistent point in time for database data. While the consistency lease is valid, Multi-version Concurrency Control (MVCC) snapshots assigned by the database node can be used to handle requests to access the database data. Once expired, the database node may have to renew the consistency lease in order to continue to handle write and read requests.

公开(公告)号：US12093276B1

公开(公告)日：2024-09-17

申请号：US16199039

申请日：2018-11-23

Applicant: Amazon Technologies, Inc.

Inventor： Andrew James Whitaker ,  Pravin Mittal ,  Stefano Stefani ,  Kanishka Chaturvedi ,  Maruthi Manohar Reddy Devarenti ,  Dhruv Goel ,  Rajesh Iyer ,  Nitin Ahuja ,  Nilanjan Basu ,  Pushap Goyal ,  Abhilash Reddy Koppula ,  VamsiKrishna Chaitanya Manchem ,  Lishi Jiang ,  Abhijeet Pandurang More ,  Hong Yang ,  Sandeep Bhatia ,  Ming-Chuan Wu

IPC: G06F16/25 ,  G06F16/21 ,  G06F16/2453 ,  G06F16/93

CPC classification number: G06F16/252 ,  G06F16/21 ,  G06F16/24542 ,  G06F16/258 ,  G06F16/93

Abstract: A non-relational database may be emulated using a relational database with a distributed data store. A request to access the non-relational database may be received at a frontend for a relational database engine that emulates an interface for a non-relational database engine. The request may be translated into the format for the relational database engine and performed by the relational database engine. The relational database engine may access data for the non-relational database at storage nodes that store the data in a relational table column of non-relational data type.