The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
May. 09, 2024
Huawei Cloud Computing Technologies Co., Ltd., Gui Zhou Province, CN;
Guanzhu Xiong, Kanata, CA;
Alexandre Depoutovitch, Kanata, CA;
Lengdong Wu, Kanata, CA;
Chong Chen, Kanata, CA;
Cheng Zhao, Kanata, CA;
Jack Hon Wai Ng, Kanata, CA;
Shu Lin, Kanata, CA;
HUAWEI CLOUD COMPUTING TECHNOLOGIES CO., LTD., Gui Zhou Province, CN;
Abstract
Support for distributed database backtracking, in which the database is reverted or iteratively reverted to a previous state, is provided. Log sequence number ranges and storage offset ranges for use in reconstructing the previous state are determined and used in the reconstruction. Clock sampling records can be generated indicating a feasible backtracking window with time points indicating allowable times to which backtracking can be performed. Appropriate log records, snapshots and checkpoints for database states are identified and organized with backtracking information record and timeline. A minimal and necessary set of log records, snapshots and checkpoints enabling database reconstruction within a time window is maintained. Measures are taken to maintain the necessary data to support backtracking even after prior backtrackings have occurred in the backtracking time window.