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Data synchronization method and device

A data synchronization and data technology, which is applied in multi-programming devices, structured data retrieval, electronic digital data processing, etc., can solve the problems of taking a long time to wake up and increasing the delay of transaction processing.

Pending Publication Date: 2021-12-31
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in some scenarios, the data synchronization process needs to wake up many transaction processes. At this time, the data synchronization process needs to spend a lot of time to wake up the transaction process, which makes the transaction process that enters the sleep state due to waiting for the synchronization machine to perform data synchronization More, increasing the transaction processing delay of the transaction process

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Embodiment Construction

[0104] Embodiments of the present application are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Those of ordinary skill in the art know that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0105] The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" ...

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Abstract

The embodiment of the invention provides a data synchronization method which can be applied to the field related to databases, and the data synchronization method provided by the invention comprises the following steps: a host sends first data generated by a first process to a standby machine through a data synchronization process, and the standby machine synchronizes the first data; the data synchronization process completes synchronization of the first data based on the standby machine and awakens a second process, and then the second process awakens the first process to execute subsequent operation. The data synchronization process in the application does not need to wake up the first process completing data synchronization; only the second process needs to be awakened, and the second process awakens the first process completing data synchronization; therefore the data synchronization process can focus on triggering the backup machine to perform data synchronization and receiving the synchronization progress of the backup machine, so that the pressure of the data synchronization process is relieved, and the time for waking up the transaction process by the data synchronization process is shortened.

Description

technical field [0001] The present application relates to the field of computer databases, in particular to a data backup method and device. Background technique [0002] In order to improve the availability of the database system, a standby machine is generally provided to synchronize data including data operation records, and perform the same data operations as the main machine based on the data including data operation records. When the main machine fails, it can be switched to the standby machine to provide external services. [0003] Among them, the data synchronization methods of the master (master) and the standby (standby) are generally divided into two types. One is synchronous replication. When the master transaction is submitted, the data including the data operation record is written to the file synchronously on the local machine. The files written to the standby machine must be synchronized before the transaction can be considered to be committed. The other is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F9/54
CPCG06F11/1448G06F11/1464G06F9/546G06F2209/548G06F16/27G06F11/2097G06F2201/80G06F9/485G06F9/4881
Inventor 江建宇
Owner HUAWEI TECH CO LTD
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