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Data replication method and device

A data replication and data technology, applied in multi-programming devices, electrical digital data processing, program control design, etc., can solve problems such as time extension, and achieve the effect of dispersing pressure and reducing time delay

Active Publication Date: 2022-03-22
云和恩墨(北京)信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The embodiment of the present invention provides a data replication method and device to at least solve the technical problem of long time delay in the related art when data is synchronized between the master copy and the slave copy in a distributed system

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a data duplication method and device. Wherein, the method includes: responding to the operation of creating the target copy, creating the target copy; selecting one of the existing master copy and the slave copy as the copy source of the target copy; obtaining the data to be copied in the copy source a consistency view; copying the data to be copied to the target copy based on the consistency view. The invention solves the technical problem of long time delay in the related art when data is synchronized between the master copy and the slave copy in the distributed system.

Description

technical field [0001] The present invention relates to the field of data synchronization, in particular to a data replication method and device. Background technique [0002] In order to improve system availability in a distributed system, a multi-copy strategy will be adopted. Usually, one copy is selected as the primary copy, and the remaining copies are used as secondary copies. The primary copy provides external read and write operations, and the secondary copy can provide read-only operations. [0003] Since only the primary copy provides write operations, the data on the primary copy will change due to the execution of the write operation, and the data on the primary copy will be inconsistent, and the difference will become larger and larger as time goes by. A mechanism to synchronize data between master and slave replicas. [0004] The master copy can actively copy all the data to all the slave copies in batches periodically or when the differences accumulate to a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/54H04L67/1095
CPCG06F9/543H04L67/1095
Inventor 吴红伟
Owner 云和恩墨(北京)信息技术有限公司
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