公开(公告)号：US11816073B1

公开(公告)日：2023-11-14

申请号：US16870825

申请日：2020-05-08

Applicant: Amazon Technologies, Inc.

Inventor： Dhruva Ranjan Chakrabarti ,  Atrayee Mullick ,  Suhas Keshavamurthy ,  Alexandre Olegovich Verbitski ,  Saraswathy Narayan ,  Yingjie He

IPC: G06F16/182 ,  G06F16/18 ,  G06F9/30 ,  G06F9/54 ,  G06F16/16

CPC classification number: G06F16/184 ,  G06F9/3009 ,  G06F9/542 ,  G06F16/168 ,  G06F16/1865

Abstract: Database commands may be asynchronously forwarded between nodes of a database system. A read-only node may receive a request, such as a read request or write request, and determine that the request should be forwarded to a read-only node for performance. A thread that handles the request may forward the request to the read-only node and register a call-back event for a response to the request and be made available to perform other work. When the response from the read-write node is received, the call-back event may be triggered and return a response to the request using the same or different thread.

公开(公告)号：US11386072B1

公开(公告)日：2022-07-12

申请号：US16870772

申请日：2020-05-08

Applicant: Amazon Technologies, Inc.

Inventor： Saraswathy Narayan ,  Gopi Krishna Attaluri ,  Dhruva Ranjan Chakrabarti ,  Atrayee Mullick ,  Damien Katz ,  Alexandre Olegovich Verbitski ,  Tengiz Kharatishvili ,  Yingjie He

IPC: G06F16/23 ,  G06F16/27

Abstract: Automatic consistency is implemented for forwarding writes in a database system. A read-only node may support both read and write requests to a database. The read only node may forward write requests to a read-write node. The read-only node may determine whether to include the forwarded requests in a version of the database for a read request automatically according to a consistency specified for a read request.

公开(公告)号：US12007954B1

公开(公告)日：2024-06-11

申请号：US16870824

申请日：2020-05-08

Applicant: Amazon Technologies, Inc.

Inventor： Dhruva Ranjan Chakrabarti ,  Atrayee Mullick ,  Damien Katz ,  Saraswathy Narayan ,  Jianguo Wang ,  Huawei Wang ,  Alexandre Olegovich Verbitski ,  Tengiz Kharatishvili ,  Yingjie He ,  Gopi Krishna Attaluri

IPC: G06F16/18 ,  G06F9/54 ,  G06F16/11 ,  G06F16/182

CPC classification number: G06F16/1865 ,  G06F9/542 ,  G06F16/128 ,  G06F16/184

Abstract: Transaction statements may be forwarded for a database transaction. A transaction begun at a read-only node may include a write statement. The read-only node may forward the write statement to the read-only node to perform as a transaction. The read-only node may update a read view for the transaction to include the write statement before performing a read statement submitted after the write statement at the read-only node.