Memory database and data processing method thereof

Abstract

The invention discloses a data processing method for a memory database. The method comprises the following steps of: separating a memory database process from memory data; establishing a shared memory segment, storing the memory data into the shared memory segment and pointing an address of a memory database data region to the address of the shared memory segment; and connecting the shared memory segment when the memory database process is started. The invention also discloses the memory database. In the method, by separating the memory database process from the memory data and applying data memory space of the memory database in the way of the shared memory segment, the data in the memory database is not affected because the data is stored in the shared memory segment under the condition that the memory database process is abnormal; and thus the database and the method have the advantages of improving the data safety of the memory database without data synchronization of a main memory database and a standby memory database and reducing the equipment cost and the equipment maintenance complexity.

Description

technical field [0001] The invention relates to database technology, in particular to an internal memory database and a data processing method thereof. Background technique [0002] An in-memory database is a database that operates on data in memory. Compared with disk, the data read and write speed of memory is several orders of magnitude higher. Saving data in memory can greatly improve the performance of applications than accessing it from disk. The in-memory database abandons the traditional way of disk data management, redesigns the architecture based on all data in memory, and makes corresponding improvements in data caching, fast algorithms, and parallel operations, so the data processing speed is faster than that of traditional databases. The data processing speed is much faster, generally more than 10 times. At the same time, since all active data of the memory database is stored in the memory, there is a risk of data loss. How to improve the data security of the...

AI Technical Summary

Problems solved by technology

[0004] However, these existing methods require one or more additional spare devices to carry the backup memory database, thus increasing the cost of the system

At the same time, it is necessary to add a synchronization interface to ensure that the data of two or more in-memory databases are consistent, which not only increases the logical complexity of the in-memory database, but also reduces its performance.

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