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公开(公告)号：US11210184B1
公开(公告)日：2021-12-28
申请号：US15616888
申请日：2017-06-07
发明人： Anurag Windlass Gupta , Murali Brahmadesam , Changan Han , Alexandre Olegovich Verbitski , Xiaofeng Bao , Alisdair William Owens , Xiang Peng , Benjamin S. Ellis , Raman Mittal , Konstantin Dubinets , Tiffany Jianto , Venkatesh Nandakumar , Seungmin Wei
摘要： Online restore operations for a database engine can be performed. A request to restore a database to a previous state can be received. Previously stored content of the database, such as snapshot stored prior to the previous state, can be identified along with log records describing changes to be made to the content prior to the previous state. State information in a query engine can be updated based on the previously stored content and log records so that queries can be processed based on the state information at the database restore to the previous state.
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公开(公告)号：US11914571B1
公开(公告)日：2024-02-27
申请号：US15926983
申请日：2018-03-20
发明人： 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分类号： G06F16/23 , G06F16/17 , G06F16/176
CPC分类号： G06F16/2315 , G06F16/1734 , G06F16/1767
摘要： 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.
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公开(公告)号：US20220114064A1
公开(公告)日：2022-04-14
申请号：US17559904
申请日：2021-12-22
发明人： Anurag Windlass Gupta , Murali Brahmadesam , Changan Han , Alexandre Olegovich Verbitski , Xiaofeng Bao , Alisdair William Owens , Xiang Peng , Benjamin S. Ellis , Raman Mittal , Konstantin Dubinets , Tiffany Jianto , Venkatesh Nandakumar , Seungmin Wei
摘要： Online restore operations for a database engine can be performed. A request to restore a database to a previous state can be received. Previously stored content of the database, such as snapshot stored prior to the previous state, can be identified along with log records describing changes to be made to the content prior to the previous state. State information in a query engine can be updated based on the previously stored content and log records so that queries can be processed based on the state information at the database restore to the previous state.
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