Data synchronization method of distributed system single panel

Abstract

The invention discloses a data synchronization method of a distributed system single board. The method comprises the following steps that: Step S102. when the shared data on the system single board changes, the system single board forms a data snapshot in a changing area and adds the version information thereof on the data snapshot; Step S104. the system single board sends the data snapshot addedwith the version information to other system single boards different from the system single board; Step S106. other system single boards adopt the data snapshot added with the version information to update the data copies themselves so as to keep the data synchronization with the system single board. The invention solves the problem of the desynchronizing of the synchronizing data and improves the stability of the system.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for synchronizing data between single boards in a distributed system. Background technique [0002] Most core network devices consist of a main control board and various service boards, forming a distributed system, and the boards communicate by sending messages. [0003] In order to ensure that the shared data in the system is consistent among the boards, Chinese Patent No. 200410070619.6 adopts the method of transmitting data change information, that is, when the shared data on a single board changes, the single board transmits the data change information to other boards to achieve data synchronization. [0004] The disadvantage of this method is poor reliability. If the data on a single board is out of sync, the shared data of the single board will change on a base different from that of other single boards, thus causing the shared data to lose cons...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this method is the poor reliability

If the data on a single board is out of sync, the shared data of this single board will change on a different basis from other boards, resulting in the loss of consistency of the shared data

There are two main reasons for data out-of-synchronization: On the one hand, the communication bandwidth between boards is limited, and packet loss occurs when data is congested; A large amount of data, link congestion at this time will easily lead to out-of-synchronization); on the other hand, errors in the logic of program data processing, memory write operations out of bounds, buffer overflow, etc. will also cause the data copy on the board to be lost. Destruction, which will also cause out-of-synchronization of synchronous data

The core network equipment has high reliability requirements, and the method of simply using the method of transmitting data change information for synchronization seriously affects the stability of the system

[0005] In addition, existing technologies have limitations in dealing with data concurrency conflicts

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