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. 31, 2021
Filed:
Mar. 15, 2019
Huawei Technologies Co., Ltd., Guangdong, CN;
HUAWEI TECHNOLOGIES CO., LTD, Guangdong, CN;
Abstract
A method includes receiving an indication of a change to a page of a database and adding a new log record corresponding to the page to a common log comprising log records, the new log record describing the change made to the page and assigned a distinct version number. The method further includes synchronously writing the new log record to each log store replica in a set of log store replicas, and asynchronously writing the new log record to all page store replicas for the page to update the page that is stored on each of the page store replicas, where each store replica for the page serves reads for the page. In response to receiving, from a predetermined number of the page store replicas, an acknowledgement of the writing of the log record, discarding the new log record from the common log.