Master and standby storage node switching method and system

Abstract

A method and advice for handing over between master and standby storage nodes and a storage medium are disclosed by the embodiments of the present invention, and the method includes: a master storage node sends service request data to a consistency control center for registration and synchronizes a standby storage node with the service request data if the registration is successful; when the consistency control center determines that the synchronization of the registered standby storage node with the service request data from the master storage node is failed, the consistency control center stores a key value corresponding to the registered service request data involved in the failed synchronization into a blacklist; the standby storage node obtains the blacklist from the consistency control center after the handing over; and when the standby storage node receives new service request data that corresponds to a key value the same as one stored in the blacklist, refusing, by the standby storage node, to provide a data writing service for the new service request data; otherwise, allowing, by the standby storage node, to provide the data writing service for the new service request data. In the embodiments of the present disclosure, the high consistency between the service request data on the master storage node and that on the standby storage node is ensured and the data writing service function is maintained on the standby storage node.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method and a system for switching primary and secondary storage nodes. Background technique [0002] With the continuous development of network technology, there are more and more network service businesses, such as membership business, game currency account and so on. In order to ensure the sustainability of external services, there are usually primary storage nodes and backup storage nodes. When the primary storage node is working normally, the primary storage node provides business services to users. When the primary storage node is down or cannot provide services for other reasons In the case of service, it will usually automatically and quickly switch to the standby storage node. [0003] However, there are some defects in the current active / standby switchover scheme of the storage layer. For some services that are highly sensitive to write data, the data in the databas...

AI Technical Summary

Problems solved by technology

[0003] However, there are some defects in the currently formed storage layer active-standby switchover scheme

For some services that are highly sensitive to write data, the data in the database needs to be updated in time, such as monthly subscription services, recharge services, etc. After the master / standby switchover, the write service function should continue to ensure that users can continue to open monthly subscriptions and provide services for the game. Account recharge, etc., but in this way, it is impossible to ensure that the data provided by the backup storage node is completely consistent with the data of the primary storage node, that is, the strong consistency of "no difference" cannot be guaranteed, which may easily lead to data confusion

For some data services that require high accuracy, if the strong consistency after the master-standby switchover cannot be guaranteed, usually after switching to the standby storage node, in order to avoid data confusion, the write service function of the standby storage node cannot be enabled, that is, for Guaranteed strong consistency at the expense of writing services after switching to the standby storage node, resulting in incomplete service functions

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