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公开(公告)号：US12229094B2
公开(公告)日：2025-02-18
申请号：US17814463
申请日：2022-07-22
Applicant: Amazon Technologies, Inc.
Inventor： Saileshwar Krishnamurthy , Alexey Kuznetsov , Mushahid Alam , Anurag Windlass Gupta , Kamal Kant Gupta , Tengiz Kharatishvili , Bohan Liu , Sandor Loren Maurice , Alok Nandan Nikhil , Nicholas Piers O'Shea , Debanjan Saha , Yoni Shalom , Jagdeep Singh Sidhu , Hongbo Song , Alexandre Olegovich Verbitski , Lawrence Douglas Webley , Siyuan Xing , Yuhui Yuan , Yibo Zhu
Abstract: Proxy-based scaling may be performed for databases. A proxy may be implemented for a database that can establish a connection between the proxy and a database engine to perform a database queries received from a client at the proxy. A scaling event may be detected for the database responsive to which the proxy may establish a connection with a new database engine which may, in some embodiments, have different capabilities or resources that address the features or criteria that triggered the scaling event. Session state may be copied from the database engine to the new database engine so that the new database engine may be able to provide access to the database on behalf of requests received from the client through the proxy.
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Patent Agency Ranking
公开(公告)号：US11657038B1
公开(公告)日：2023-05-23
申请号：US16370728
申请日：2019-03-29
Applicant: Amazon Technologies, Inc.
Inventor： Gopi Krishna Attaluri , Ian Kosseff , Kamal Kant Gupta , Saileshwar Krishnamurthy , Alok Nandan Nikhil , Alexandre Verbitski
CPC classification number: G06F16/2379 , G06F9/45558 , G06F11/1438 , G06F11/1464 , G06F2009/45583 , G06F2009/45595 , G06F2201/84
Abstract: Techniques for a context preservation during server restart are described. A restart of a database server having at least one open communications session with a database client is initiated. The database server can be executed by a compute instance hosted by a computer system of a provider network. A restarted database server is launched. The restarted database server obtains session state data to resume the at least one open communications session with the database client, the session state data including one or more session variables. The restarted database server receives a transaction from the database client.
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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.
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公开(公告)号：US10708379B1
公开(公告)日：2020-07-07
申请号：US15943634
申请日：2018-04-02
Applicant: Amazon Technologies, Inc.
Inventor： Anurag Windlass Gupta , Saileshwar Krishnamurthy , Alexey Kuznetsov , Sandor Loren Maurice , Alok Nandan Nikhil , Nicholas Piers O'Shea , Debanjan Saha , Yoni Shalom , Jagdeep Singh Sidhu , Hongbo Song , Lawrence Douglas Webley , Siyuan Xing , Yuhui Yuan , Yibo Zhu
Abstract: A dynamic proxy may be implemented for a database that can establish a connection between the proxy and a database engine to perform a database queries received from a client at the proxy. The proxy may receive a connection request (and later database queries) through a first network endpoint from a client. The proxy can then determine based on the source of the connection request a second network endpoint through which to access the database (e.g., the endpoint of the database engine). Once the proxy establishes a connection with the database engine through the second network endpoint, the proxy can request the performance of queries at the database engine instead of the client.
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公开(公告)号：US20220358106A1
公开(公告)日：2022-11-10
申请号：US17814463
申请日：2022-07-22
Applicant: Amazon Technologies, Inc.
Inventor： Saileshwar Krishnamurthy , Alexey Kuznetsov , Mushahid Alam , Anurag Windlass Gupta , Kamal Kant Gupta , Tengiz Kharatishvili , Bohan Liu , Sandor Loren Maurice , Alok Nandan Nikhil , Nicholas Piers O'Shea , Debanjan Saha , Yoni Shalom , Jagdeep Singh Sidhu , Hongbo Song , Alexandre Olegovich Verbitski , Lawrence Douglas Webley , Siyuan Xing , Yuhui Yuan , Yibo Zhu
Abstract: Proxy-based scaling may be performed for databases. A proxy may be implemented for a database that can establish a connection between the proxy and a database engine to perform a database queries received from a client at the proxy. A scaling event may be detected for the database responsive to which the proxy may establish a connection with a new database engine which may, in some embodiments, have different capabilities or resources that address the features or criteria that triggered the scaling event. Session state may be copied from the database engine to the new database engine so that the new database engine may be able to provide access to the database on behalf of requests received from the client through the proxy.
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公开(公告)号：US10521312B1
公开(公告)日：2019-12-31
申请号：US15462277
申请日：2017-03-17
Applicant: Amazon Technologies, Inc.
Inventor： Alok Nandan Nikhil , Bohan Liu , Mushahid Alam , Tengiz Kharatishvili , Saileshwar Krishnamurthy , Alexandre Olegovich Verbitski , Kamal Kant Gupta
Abstract: A system for updating a database instance with a patch or new binary image. A database instance includes a database engine and a client-side storage layer driver to manage database state information and volume geometry state information associated with client process connections to a volume of a storage layer of a database system during the patching process. The database engine and the client-side storage service driver save database state information and volume geometry state information, execute the new binary image, and restore the updated database engine with the database state information and volume geometry state information. The new binary image may be executed using a fork/exec model, wherein file descriptors used to identify sockets used in existing client connections are preserved, enabling restoration of the client connections without interruption or downtime.
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