CN109344004A - A kind of memory database backup management method, device, terminal and storage medium - Google Patents
A kind of memory database backup management method, device, terminal and storage medium Download PDFInfo
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- CN109344004A CN109344004A CN201811021327.1A CN201811021327A CN109344004A CN 109344004 A CN109344004 A CN 109344004A CN 201811021327 A CN201811021327 A CN 201811021327A CN 109344004 A CN109344004 A CN 109344004A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
Abstract
The embodiment of the present application provides a kind of memory database backup management method, device, terminal and storage medium, which comprises the data in memory database are imported relevant database；Backup Data in relevant database is synchronized to shadow EMS memory；Judge whether memory database breaks down: being, then the Backup Data in shadow EMS memory is loaded onto memory database；It is no, then do not execute load.Present invention backup and the process restored all are the processes executed automatically, and without greatly improving the efficiency, saving plenty of time and human resources by disk.
Description
Technical field
The invention belongs to technical field of data storage, and in particular to a kind of memory database backup management method, device, end
End and storage medium.
Background technique
For disk database, due to disk access, the data transmitting of interior external memory, buffer management, wait in line and
The delay etc. of lock makes the worst case execution time of affairs actual average execution time and estimation differ greatly, if by entire
Database or its main " work " are partially placed into memory, make each affairs in the process of implementation without I/O, then calibrated for system
The really runing time of estimation and arrangement affairs, provides strong support with preferable dynamic predictability, while
To realize that the timing restriction of affairs lays the foundation, the memory for being stored in memory the data in database is then just derived
Database.Memory database (Memory Database, MDB) refers to the master data in database (if internal storage data is enough
Greatly, can be entire database) memory-resident, execution of affairs itself is not related to magnetic disc i/o operation, and database is taken as memory
In addressable mass data library, treat without being re-used as a large amount of storage files, the data in external memory are the one of internal storage data
A backup.On design aim, how it is primary concern is that efficiently use CPU time and memory headroom, and disk database
What is considered mainly reduces magnetic disc access times and effective use disk space.But MDB has a fatal weakness, is exactly easily
The property lost, when the data being stored in memory break down, it is easy to lead to the loss of data, data are not lost in order to prevent
It loses, its backup is just had to preserve in time.And the system under the backup of database, log storage and abnormal conditions is extensive
A large amount of time-consuming magnetic disc i/o operations are needed to be implemented again, will affect the normal transaction capabilities of system.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of memory database backup management method, device, terminal and deposits
Storage media, to solve the above technical problems.
In a first aspect, the embodiment of the present application provides a kind of memory database backup management method, which comprises
Data in memory database are imported into relevant database；
Backup Data in relevant database is synchronized to shadow EMS memory；
Judge whether memory database breaks down:
It is that the Backup Data in shadow EMS memory is then loaded onto memory database；
It is no, then do not execute load.
With reference to first aspect, in the first embodiment of first aspect, the data by memory database are led
Entering relevant database includes:
Setting imports interval time；
The data in memory database are exported according to the importing interval time；
Derived data are imported into relevant database.
With reference to first aspect, in second of embodiment of first aspect, the backup by relevant database
Data are synchronized to shadow EMS memory
Data in relevant database increment list are imported in the current page table of shadow EMS memory；
It detects and whether there is data identical with the current page table data of shadow EMS memory in shadow EMS memory backup page table:
It is that the current mirror image of shadow EMS memory backup page table is then updated to the mirror image of the current page table of shadow EMS memory；
It is no, then the data of the current page table of shadow EMS memory are added to shadow EMS memory backup page table and utilize backup manager pair
Data are backed up.
With reference to first aspect, in the third embodiment of first aspect, the Backup Data by shadow EMS memory
Being loaded onto memory database includes:
Shadow EMS memory backup page table is loaded into memory database；
Judge data page table needed for testing affairs whether in memory database by executing test affairs:
It is then to continue to execute test affairs；
It is no, then related data page table is transferred from relevant database and load the related data page table.
Second aspect, the embodiment of the present application provide a kind of memory database backup management device, and described device includes:
Backup units are configured to the data in memory database importing relevant database；
Synchronization unit is configured to the Backup Data in relevant database being synchronized to shadow EMS memory；
Judging unit is configured to judge whether memory database breaks down；
Loading unit is configured to the Backup Data in shadow EMS memory being loaded onto memory database；
Holding unit is configured to not execute load.
In conjunction with second aspect, in the first embodiment of second aspect, the backup units include:
Time setup module is configured to setting and imports interval time；
Data export module is configured to be exported the data in memory database according to the importing interval time；
Data import modul is configured to derived data importing relevant database.
In conjunction with second aspect, in second of embodiment of second aspect, the synchronization unit includes:
Data import modul is configured to importing the data in relevant database increment list into the current page of shadow EMS memory
In table；
Data detection module is configured to whether there is and the current page table of shadow EMS memory in detection shadow EMS memory backup page table
The identical data of data；
Mirror image update module is configured to the current mirror image of shadow EMS memory backup page table being updated to shadow EMS memory current page
The mirror image of table；
Data backup module is configured to the data of the current page table of shadow EMS memory being added to shadow EMS memory backup page table simultaneously
Data are backed up using backup manager.
In conjunction with second aspect, in the third embodiment of second aspect, the loading unit includes:
Loading module is configured to shadow EMS memory backup page table being loaded into memory database；
Whether judgment module is configured to execute data page table needed for test affairs judge test affairs in memory number
According in library；
Test module is configured to continue to execute test affairs；
Module is transferred, be configured to transfer related data page table from relevant database and loads the related data pages
Table.
The third aspect provides a kind of terminal, comprising:
Processor, memory, wherein
The memory is used to store computer program,
The processor from memory for calling and running the computer program, so that terminal executes above-mentioned end
The method for holding terminal.
Fourth aspect provides a kind of computer storage medium, instruction is stored in the computer readable storage medium,
When run on a computer, so that computer executes method described in above-mentioned various aspects.
5th aspect, provides a kind of computer program product comprising instruction, when run on a computer, so that
Computer executes method described in above-mentioned various aspects.
The beneficial effects of the present invention are,
Memory database backup management method provided by the invention, by the way that the data in memory database are backuped to relationship
The data of relevant database are simultaneously synchronized to shadow EMS memory by type database, realize dual backup, are backed up relative to traditional magnetic disk
It is more efficient, and backup safety is also guaranteed.It, automatically will be in shadow EMS memory after determining that memory database breaks down
Data be loaded onto memory database, and the Backup Data in marriage relation type database is realized and automatic restores internal storage data
Library.Present invention backup and the process restored all are the processes executed automatically, and without greatly improving the efficiency by disk, are saved
Plenty of time and human resources are saved.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic flow chart of the method for the application one embodiment.
Fig. 2 is the schematic block diagram of the device of the application one embodiment.
Fig. 3 is a kind of structural schematic diagram of terminal provided in an embodiment of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
The Key Term occurred in the application is explained below.
Fig. 1 is the schematic flow chart of the method for the application one embodiment.Wherein, Fig. 1 executing subject can be one kind
Memory database backup management device.
As shown in Figure 1, this method 100 includes:
Step 110, the data in memory database are imported into relevant database；
Step 120, the Backup Data in relevant database is synchronized to shadow EMS memory；
Step 130, judge whether memory database breaks down:
It is that the Backup Data in shadow EMS memory is then loaded onto memory database；
It is no, then do not execute load.
In order to facilitate the understanding of the present invention, below with the principle of memory database backup management method of the present invention, in conjunction with
The process for carrying out backup management in embodiment to memory database, does memory database backup management method provided by the invention
Further description.
Optionally, as the application one embodiment, the data by memory database import relevant database
Include:
Setting imports interval time；
The data in memory database are exported according to the importing interval time；
Derived data are imported into relevant database.
Optionally, as the application one embodiment, the Backup Data by relevant database is synchronized to shadow
Memory includes:
Data in relevant database increment list are imported in the current page table of shadow EMS memory；
It detects and whether there is data identical with the current page table data of shadow EMS memory in shadow EMS memory backup page table:
It is that the current mirror image of shadow EMS memory backup page table is then updated to the mirror image of the current page table of shadow EMS memory；
It is no, then the data of the current page table of shadow EMS memory are added to shadow EMS memory backup page table and utilize backup manager pair
Data are backed up.
Optionally, as the application one embodiment, the Backup Data by shadow EMS memory is loaded onto internal storage data
Library includes:
Shadow EMS memory backup page table is loaded into memory database；
Judge data page table needed for testing affairs whether in memory database by executing test affairs:
It is then to continue to execute test affairs；
It is no, then related data page table is transferred from relevant database and load the related data page table.
Specifically, the memory database backup management method includes:
S1, the data in memory database are imported into relevant database.
Setting backup interval time (if setting interval time is 5h), backup script, backup is written into backup interval time
Script executes a backup every 5h, i.e., exports the data in memory database, and derived data are imported relational data
In library.Every time by after data export in memory database, judge whether have existed in relevant database and export data phase
Same data, identical data, then import relevant database for export data if it does not exist.
S2, the Backup Data in relevant database is synchronized to shadow EMS memory.
(1) data in the increment list in relevant database are imported in the current page table of shadow EMS memory, reads CPTabl
E (current page table)；
(2) every page in CPTab l e is detected whether in BackupL i s t (backup page table)；
(3) if so, the old image in BackupLi st is deleted, while mirror image new in CPTab l e is added to
BackupL i s t；Otherwise, the page in CPTab l e is only added to BackupLi st；
(4) step 3 is repeated, until CPTab l e is sky；
(5) backup manager backups from BackupL i s t；
(6) backed-up pages are added to Usab l eLi st (page table can be used), if backed-up pages are used, backup is managed
It can be arranged as the free time in reason device.
S3, judge whether memory database breaks down: being, then the Backup Data in shadow EMS memory is loaded onto memory number
According to library；It is no, then do not execute load.
(1) system reboot；
(2) by all pages of heavy duties in BackupL i s t to MDB；
(3) start new affairs；
(4) if affairs execute required page not in MDB, this heavily loaded page from relevant database is otherwise normal to execute
Affairs；
(5) step 4 is repeated, until all backed-up pages arrive MDB by heavy duty.
If Fig. 2 shows, which includes:
Backup units 210, the backup units 210 are used to the data in memory database importing relevant database；
Synchronization unit 220, the synchronization unit 220 is for the Backup Data in relevant database to be synchronized in shadow
It deposits；
Judging unit 230, the judging unit 230 is for judging whether memory database breaks down；
Loading unit 240, the loading unit 240 are used to the Backup Data in shadow EMS memory being loaded onto internal storage data
Library；
Holding unit 250, the holding unit 250 is not for executing load.
Optionally, as the application one embodiment, the backup units include:
Time setup module is configured to setting and imports interval time；
Data export module is configured to be exported the data in memory database according to the importing interval time；
Data import modul is configured to derived data importing relevant database.
Optionally, as the application one embodiment, the synchronization unit includes:
Data import modul is configured to importing the data in relevant database increment list into the current page of shadow EMS memory
In table；
Data detection module is configured to whether there is and the current page table of shadow EMS memory in detection shadow EMS memory backup page table
The identical data of data；
Mirror image update module is configured to the current mirror image of shadow EMS memory backup page table being updated to shadow EMS memory current page
The mirror image of table；
Data backup module is configured to the data of the current page table of shadow EMS memory being added to shadow EMS memory backup page table simultaneously
Data are backed up using backup manager.
Optionally, as the application one embodiment, the loading unit includes:
Loading module is configured to shadow EMS memory backup page table being loaded into memory database；
Whether judgment module is configured to execute data page table needed for test affairs judge test affairs in memory number
According in library；
Test module is configured to continue to execute test affairs；
Module is transferred, be configured to transfer related data page table from relevant database and loads the related data pages
Table.
Fig. 3 is a kind of structural schematic diagram of terminal installation 300 provided in an embodiment of the present invention, which can be with
For executing the method provided by the embodiments of the present application for updating heat dissipation policing parameter.
Wherein, which may include: processor 310, memory 320 and communication unit 330.These components
It is communicated by one or more bus, it will be understood by those skilled in the art that the structure of server shown in figure is not
The restriction to the application is constituted, it is also possible to hub-and-spoke configuration either busbar network, can also include more than illustrating
Or less component, perhaps combine certain components or different component layouts.
Wherein, which can be used for executing instruction for storage processor 310, and memory 320 can be by any class
The volatibility or non-volatile memories terminal or their combination of type are realized, such as static random access memory (SRAM), electricity
Erasable Programmable Read Only Memory EPROM (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory
(PROM), read-only memory (ROM), magnetic memory, flash memory, disk or CD.When executing instruction in memory 320
When being executed by processor 310, so that terminal 300 some or all of is able to carry out in following above method embodiment step.
Processor 310 is the control centre for storing terminal, utilizes each of various interfaces and the entire electric terminal of connection
A part by running or execute the software program and/or module that are stored in memory 320, and calls and is stored in storage
Data in device, to execute the various functions and/or processing data of electric terminal.The processor can be by integrated circuit (Int
Egrated Circu i t, abbreviation IC) composition, such as can be made of the IC of single encapsulation, it can also be by connecting more phases
The encapsulation IC of congenerous or different function and form.For example, processor 310 can only include central processing unit (Central
Proce s s ing Un i t, abbreviation CPU).In the application embodiment, CPU can be single operation core, also can wrap
Include multioperation core.
Communication unit 330, for establishing communication channel, so that the storage terminal be allow to be led to other terminals
Letter.It receives the user data of other terminals transmission or sends user data to other terminals.
The application also provides a kind of computer storage medium, wherein the computer storage medium can be stored with program, the journey
Sequence may include step some or all of in each embodiment provided by the present application when executing.The storage medium can for magnetic disk,
CD, read-only memory (English: read-onl y memory, referred to as: ROM) or random access memory (English:
Random acc es s memory, referred to as: RAM) etc..
Therefore, the application is by backuping to relevant database for the data in memory database and by relevant database
Data be synchronized to shadow EMS memory, realize dual backup, relative to traditional magnetic disk back up it is more efficient, and backup safety also must
Guarantee is arrived.After determining that memory database breaks down, the data in shadow EMS memory are loaded onto memory database automatically,
And the Backup Data in marriage relation type database, realize automatic recovery memory database.Process present invention backup and restored
It is all automated procedure, and without greatly improving the efficiency, saving plenty of time and human resources, the present embodiment by disk
The attainable technical effect of institute may refer to described above, and details are not described herein again.
It is required that those skilled in the art can be understood that the technology in the embodiment of the present application can add by software
The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present application substantially or
Say that the part that contributes to existing technology can be embodied in the form of software products, which is stored in
Such as USB flash disk, mobile hard disk, read-only memory (ROM, Read-Onl y Memory), random access memory in one storage medium
The various media that can store program code such as (RAM, Random Acce s s Memory), magnetic or disk, if including
Dry instruction is used so that a terminal (can be personal computer, server or second terminal, the network terminal etc.)
It performs all or part of the steps of the method described in the various embodiments of the present invention.
Same and similar part may refer to each other between each embodiment in this specification.Implement especially for terminal
For example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring in embodiment of the method
Explanation.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
Although by reference to attached drawing and combining the mode of preferred embodiment to the present invention have been described in detail, the present invention
It is not limited to this.Without departing from the spirit and substance of the premise in the present invention, those of ordinary skill in the art can be to the present invention
Embodiment carry out various equivalent modifications or substitutions, and these modifications or substitutions all should in covering scope of the invention/appoint
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention is answered described is with scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of memory database backup management method, which is characterized in that the described method includes:
Data in memory database are imported into relevant database；
Backup Data in relevant database is synchronized to shadow EMS memory；
Judge whether memory database breaks down:
It is that the Backup Data in shadow EMS memory is then loaded onto memory database；
It is no, then do not execute load.
2. the method according to claim 1, wherein the data by memory database import relationship type number
Include: according to library
Setting imports interval time；
The data in memory database are exported according to the importing interval time；
Derived data are imported into relevant database.
3. the method according to claim 1, wherein the Backup Data by relevant database is synchronized to
Shadow EMS memory includes:
Data in relevant database increment list are imported in the current page table of shadow EMS memory；
It detects and whether there is data identical with the current page table data of shadow EMS memory in shadow EMS memory backup page table:
It is that the current mirror image of shadow EMS memory backup page table is then updated to the mirror image of the current page table of shadow EMS memory；
It is no, then the data of the current page table of shadow EMS memory are added to shadow EMS memory backup page table and using backup manager to data
It is backed up.
4. the method according to claim 1, wherein the Backup Data by shadow EMS memory is loaded onto memory
Database includes:
Shadow EMS memory backup page table is loaded into memory database；
Judge data page table needed for testing affairs whether in memory database by executing test affairs:
It is then to continue to execute test affairs；
It is no, then related data page table is transferred from relevant database and load the related data page table.
5. a kind of memory database backup management device, which is characterized in that described device includes:
Backup units are configured to the data in memory database importing relevant database；
Synchronization unit is configured to the Backup Data in relevant database being synchronized to shadow EMS memory；
Judging unit is configured to judge whether memory database breaks down；
Loading unit is configured to the Backup Data in shadow EMS memory being loaded onto memory database；
Holding unit is configured to not execute load.
6. device according to claim 5, which is characterized in that the backup units include:
Time setup module is configured to setting and imports interval time；
Data export module is configured to be exported the data in memory database according to the importing interval time；
Data import modul is configured to derived data importing relevant database.
7. device according to claim 5, which is characterized in that the synchronization unit includes:
Data import modul is configured to importing the data in relevant database increment list into the current page table of shadow EMS memory
In；
Data detection module is configured to whether there is and the current page table data of shadow EMS memory in detection shadow EMS memory backup page table
Identical data；
Mirror image update module is configured to the current mirror image of shadow EMS memory backup page table being updated to the current page table of shadow EMS memory
Mirror image；
Data backup module is configured to the data of the current page table of shadow EMS memory being added to shadow EMS memory backup page table and utilize
Backup manager backs up data.
8. device according to claim 5, which is characterized in that the loading unit includes:
Loading module is configured to shadow EMS memory backup page table being loaded into memory database；
Whether judgment module is configured to execute data page table needed for test affairs judge test affairs in memory database
In；
Test module is configured to continue to execute test affairs；
Module is transferred, be configured to transfer related data page table from relevant database and loads the related data page table.
9. a kind of terminal characterized by comprising
Processor；Related data page table is transferred from relevant database and loads the related data page table.
The memory executed instruction for storage processor；
Wherein, the processor is configured to perform claim requires the described in any item methods of 1-4.
10. a kind of computer readable storage medium for being stored with computer program, which is characterized in that the program is executed by processor
Shi Shixian method for example of any of claims 1-4.
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| CN110457909A (en) * | 2019-08-15 | 2019-11-15 | 腾讯科技（深圳）有限公司 | Loophole restorative procedure, device and the computer equipment of virutal machine memory |
| CN113360534A (en) * | 2021-08-11 | 2021-09-07 | 北京快立方科技有限公司 | Memory recovery method for multi-copy data of memory database |
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