Memory database hot-standby method and host

Abstract

An embodiment of the invention discloses a memory database hot-standby method and a host. The memory database hot-standby method includes respectively writing an operation log recorded in real time to an active disk pack and at least one standby disk pack by the host; and de-hooking the at least one standby disk pack which stores the operation log from the host and hooking to a standby machine when switch of a dual microcomputer triggers. According to the technical scheme, reliability of a system can be increased effectively, and the risk of service interruption is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a dual-computer hot backup method for a memory database and a host computer. Background technique [0002] In-memory database is to improve the system's real-time access to key data by mapping all the data in the system's common database tables to the shared memory of the host, and building memory indexes on key fields on the database tables. When the application program accesses these database tables, it uses the data in the shared memory by calling the application programming interface (API, Application Programming Interface) of the memory database instead of directly accessing the data in the physical database table, which greatly improves the real-time performance of the system. [0003] In-memory database dual-machine hot backup is a method proposed to improve the high reliability of the system. It mainly synchronizes the operation log recording the real-time operation of the main...

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Problems solved by technology

[0005] However, the above solution has disadvantages. For example, when a dual-machine switchover occurs, if the main machine still has operation logs that have not been synchronized to the standby machine, the disk that stores the above operation logs on the main machine needs to be unmounted from the main machine and then attached to the standby machine. If the above-mentioned dual-machine switching is triggered because the disk storing the above-mentioned operation logs on the host is damaged, then the dual-machine switching will be in a dilemma. If there is no switching, the memory database backup of the host is already unreliable. Data loss will result. If the switch is made, the operation log on the standby disk is not fully synchronized with the master, and the switch will cause business interruption.

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