Method for storing real-time database by using similar cluster

Abstract

The invention discloses a technique for storing a real-time database by using a similar cluster and supporting operating submission. Data are stored by using a data unit similar to a cluster in the real-time database so as to realize operating incremental submission of the real-time database. Operations can be independently performed respectively during submitting and the time overhead is comparable with the real-time data access, so a plurality of submitted operations can be performed among the real-time data accesses in turn without affecting the real-time access of the real-time database. The distributed data spaces are slightly more than the requirement of actual data spaces during primary submission so as to avoid space resource waste caused by a large amount of idle spaces distributed in advance during the primary submission. Meanwhile, only when new data spaces are assuredly needed or a large amount of data spaces are assuredly not used during submission, the spaces are integrally applied or released by using the data unit as a unit so as to avoid the problem that the used spaces cannot be reused.

Description

Technical field: [0001] The technical invention relates to the field of industrial automation, in particular to the field of distributed monitoring systems. The technical invention can be widely applied to applications such as power grid monitoring, electrified railways and urban rail transit, and comprehensive monitoring in the field of industrial automation. Background technique: [0002] In the field of industrial control, with the development of automation technology, more and more engineering applications, such as industrial production, power dispatching, building automation, fire prevention and control, etc., use monitoring systems to realize process or application automation. When the monitoring system is applied to a certain project, it generally first configures the required data structure according to the requirements of the project application, and then generates the data in the corresponding real-time database according to the configuration at runtime, and operate...

AI Technical Summary

Problems solved by technology

But in this case, because the real-time database allocates space for each data independently, it is a little difficult in organization and management; and because the space required by various data types is different, with the addition and deletion operations in multiple submissions, A large number of fragments that cannot be reused will be generated in the computer memory. With the operation of the system

It is unacceptable that the overhead of space resources will continue to increase, or even run out, causing the system to crash

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