公开(公告)号：US11553046B1

公开(公告)日：2023-01-10

申请号：US15717789

申请日：2017-09-27

Applicant: Amazon Technologies, Inc.

Inventor： Alexey Kuznetsov ,  Sandor Loren Maurice ,  Alok Nandan Nikhil ,  Joseph Andrew Tucek ,  Alexandre Olegovich Verbitski ,  Lawrence Webley ,  Tengiz Kharatishvili ,  Bohan Liu ,  Mushahid Alam ,  Kamal Kant Gupta ,  Debanjan Saha ,  Anurag Windlass Gupta ,  Saileshwar Krishnamurthy

IPC: H04L29/08 ,  H04L12/751 ,  H04L67/148 ,  H04L67/141 ,  H04L45/02 ,  H04L9/40 ,  H04L67/01

Abstract: A service provider network implements seamless scaling via proxy replay of session state. Upon a trigger, such as a determination to scale a server, a scaled server may be spun up and an identifier of the scaled server provided to a first (existing) server. The first server sends the identification of the second server, and session state information for each of the connections between the first server and the request router, to the request router. For each of the connections, the request router establishes a new connection between the request router and the second (scaled) server, and replays the session state information for the connection to the second server. The request router then routes traffic between each existing client connection (e.g., the same existing client connection which carried traffic delivered to the first server) and the corresponding new connection to the second server.

公开(公告)号：US10810093B1

公开(公告)日：2020-10-20

申请号：US15891261

申请日：2018-02-07

Applicant: Amazon Technologies, Inc.

Inventor： Joseph Andrew Tucek

IPC: G06F11/00 ,  G06F11/14 ,  H04L12/24 ,  G06F11/34 ,  H04L29/08

Abstract: A distributed system implements initializing reliability data of a newly joined node of a cluster for purposes of leadership election. When a new node joins a cluster, the new node receives reliability data for one or more existing nodes of a cluster. The new node initializes its own reliability data based on the reliability data received from the existing nodes of the cluster. In some cases, the new node may calculate a median reliability of the existing nodes and then initialize its own reliability to be the median or slightly below the median. For example, if the median reliability is “two failures,” then the new node may set its reliability to be “three failures.” This may provide a more stable leadership election process, as the new nodes are unlikely to be elected as a leader node.

公开(公告)号：US11914571B1

公开(公告)日：2024-02-27

申请号：US15926983

申请日：2018-03-20

Applicant: Amazon Technologies, Inc.

Inventor： Xiaofeng Bao ,  Murali Brahmadesam ,  Yi Ding ,  Niket Goel ,  Anurag Windlass Gupta ,  Kamal Kant Gupta ,  Changan Han ,  Tiffany Jianto ,  Tengiz Kharatishvili ,  Saileshwar Krishnamurthy ,  Bohan Liu ,  Saleem Mohideen ,  Punit Rajgaria ,  Joseph Andrew Tucek ,  Alexandre Olegovich Verbitski

IPC: G06F16/23 ,  G06F16/17 ,  G06F16/176

CPC classification number: G06F16/2315 ,  G06F16/1734 ,  G06F16/1767

Abstract: Optimistic concurrency may be implemented for multiple writers to a database. Writes to a database from different writers may succeed unless a conflict is detected at the data store for the database. For detected conflicts, a request to resolve the conflict between writes may be submitted to a primary writer, which may determine and provide a resolution of the conflict to the conflicting writers. The data store may then be updated to commit the selected write identified by the resolution of the conflict.