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Data synchronization method, system and device

A data synchronization and data technology, applied in the field of data processing, can solve problems such as service unavailability and network delay

Pending Publication Date: 2021-08-24
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the transmission of the full amount of data may cause network delays and cause the service to be unavailable

Method used

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  • Data synchronization method, system and device
  • Data synchronization method, system and device
  • Data synchronization method, system and device

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Embodiment Construction

[0096] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the specification. However, this specification can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of this specification, so this specification is not limited by the specific implementations disclosed below.

[0097] Terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only, and are not intended to limit one or more embodiments of this specification. As used in one or more embodiments of this specification and the appended claims, the singular forms "a", "the", and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present specification refers t...

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Abstract

The embodiment of the invention provides a data synchronization method, system and device, and the method comprises the steps: sending a log pull request to a log service node, the log pull request carrying a version sequence number of a data storage space, and the version sequence number having a corresponding log sequence number in the log service node; receiving a target log record returned by the log service node based on the log pulling request, wherein the log sequence number of the target log record is larger than the log sequence number corresponding to the version sequence number in the log service node; and updating the data stored in the data storage space and the version sequence number by executing the target log record, so that the updated version sequence number corresponds to the latest log sequence number of the target log record.

Description

technical field [0001] The embodiments of this specification relate to the technical field of data processing, and in particular, to a data synchronization method, system, and device. Background technique [0002] With the development of the Internet, the amount of online data for various projects is increasing. When the amount of data is large and the storage service node storing the data fails and needs to be switched, the full amount of data needs to be transmitted between the storage service nodes. [0003] However, the transmission of the full amount of data may cause network delays and cause the service to be unavailable. Therefore, a more reliable solution needs to be provided. Contents of the invention [0004] In view of this, the embodiment of this specification provides two data synchronization methods. One or more embodiments of this specification relate to two kinds of data synchronization devices, one kind of data synchronization system, two kinds of compu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F16/23
CPCG06F16/27G06F16/2329
Inventor 严祥光鞠进涛朱云锋
Owner ALIBABA GRP HLDG LTD