CN106294387A - Data migration method and device - Google Patents
Data migration method and device Download PDFInfo
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- CN106294387A CN106294387A CN201510258062.7A CN201510258062A CN106294387A CN 106294387 A CN106294387 A CN 106294387A CN 201510258062 A CN201510258062 A CN 201510258062A CN 106294387 A CN106294387 A CN 106294387A
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- data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/214—Database migration support
Abstract
The present invention relates to a kind of data migration method, described method includes: by the Data Migration in the first data base to the second data base；Receive read request and the write request of user terminal；The transition state of detection data；Transition state according to data processes described read request and write request.Also provide for a kind of data migration device.The present invention can also provide the user with read-write service in the process of Data Migration, will not stop the service of data base and bring unnecessary loss to user.
Description
Technical field
The present invention relates to network data processing field, particularly relate to a kind of data migration method and device.
Background technology
Owing to during customer volume growth, activity festivals or holidays, request amount explodes or server software and hardware is unpredictable
Fault etc. so that the server on backstage, the Internet is frequently encountered to be needed to carry out promptly the data of data base
Situation about migrating.
But, traditional data moving method, when data are moved to new database by old database, needs elder generation
Cut off the service of old database, data are copied in new database, replace old number by new database the most again
Service is provided according to storehouse.During Data Migration, user's use can be caused owing to data base stops service
The most serious impact, and along with the increase of data volume, immeasurable loss can be brought to user.
Summary of the invention
Based on this, it is necessary to bring to user for data migration process needing stop the service of data base
The technical problem of loss, it is provided that a kind of data migration method and device.
A kind of data migration method, described method includes:
By in the Data Migration in the first data base to the second data base；
Receive read request and the write request of user terminal；
The transition state of detection data；
Transition state according to data processes described read request and write request.
A kind of data migration device, described device includes:
Transferring module, for by the Data Migration in the first data base to the second data base；
Request receiver module, for receiving read request and the write request of user terminal；
Detection module, for detecting the transition state of data；
Processing module, processes described read request and write request for the transition state according to data.
Data are moved to the mistake of the second data base from the first data base by above-mentioned data migration method and device
Cheng Zhong, after the read request receiving user terminal and write request, by detecting the transition state of data
And process described read request and write request according to described transition state, so the process at Data Migration can also
Provide the user with read-write service, the service of data base will not be stopped and bringing unnecessary loss to user.
Accompanying drawing explanation
Fig. 1 is the applied environment figure of data mover system in an embodiment；
Fig. 2 is the structural representation of server in an embodiment；
Fig. 3 is the schematic flow sheet of data migration method in an embodiment；
Fig. 4 is that read request is distributed in an embodiment the first data base or the flow process of the second database processing
Schematic diagram；
Fig. 5 is the flow process in the Data Migration in the first data base to the second data base to be shown in an embodiment
It is intended to；
Fig. 6 is the first state diagram of Data Migration in a concrete application scenarios；
Fig. 7 is the second state diagram of Data Migration in a concrete application scenarios；
Fig. 8 is the third state figure of Data Migration in a concrete application scenarios；
Fig. 9 is the structured flowchart of data migration device in an embodiment；
Figure 10 is the structured flowchart of transferring module in an embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
As it is shown in figure 1, in one embodiment, it is provided that a kind of data mover system, including multiple terminals
102 and server 104.Wherein, terminal 102 can be mobile phone, individual's notebook, panel computer or platform
Formula computer etc.；Server 104 can be one or more server.On user terminal 102, ask the visitor in operation
Seek application program, provide at request sending function.Server 104 is used for please for run in terminal 102
Application program is asked to provide service support.User can send various reading by terminal 102 to server 104 please
Summation write request, server 104 then processes described various read request by its internal data base and asks with writing
Ask.Data corresponding to the read request of user's transmission and write request are stored in the data base of server 104,
Data can migrate between different data bases.
In one embodiment, the internal structure schematic diagram of the server 104 in above-mentioned Fig. 1 is as shown in Figure 2.
Processor that this server includes being connected by system bus, internal memory, storage medium, network interface.Service
Device 104 receives read request and the write request of user terminal 102 by described network interface.Wherein, should
The storage medium storage of server has operating system, data base and a kind of data migration device, and data base is permissible
It is one or more data base.This data migration device is used for realizing a kind of data migration method.These clothes
The processor of business device is configured to perform a kind of data migration method.
As it is shown on figure 3, in one embodiment, it is provided that a kind of data migration method, the present embodiment is with this
The server that method is applied in above-mentioned Fig. 1 illustrates.This data migration method specifically includes following step
Rapid:
Step S302: by the Data Migration in the first data base to the second data base.
Specifically, DB (database, data base) refer to be stored in a certain way together, can be for multiple
User shares, has the least redundancy and application program data acquisition system independent of each other.Data base
Belong to application system, may be mounted on server.
First data base and the second data base may be mounted at and can also be separately mounted to difference on same server
On server.In the present embodiment, the first data base and the second installing DB are on same server.
Step S304: receive read request and the write request of user terminal.
Specifically, user terminal runs and has request application, the page of request application is provided with request and triggers
Control, such as one button or a hyperlink.User is by the touch screen of user terminal, button or rail
The input equipment input triggering command such as mark ball so that user terminal sends read request or write request to server.
Read request need not change data, and such as security knowledge browse request, write request then needs to change data, as
Password amendment request.
In the present embodiment, server can receive the more than one request from a user terminal, also
The request from two or more user terminal can be received.
Step S306: the transition state of detection data.
Concrete, data start after a data base migrates to another data base, its transition state
At least include migrating and migration completes two kinds.
In the present embodiment, step S306 specifically includes: the data detected in the first data base are the most all moved
Move on in the second data base, the most then the transition state of data is that migration completes, if it is not, then the moving of data
Shifting state is for migrate.
Step S308: process described read request and write request according to the transition state of data.
Specifically, if the transition state of data is for migrate, then write request is distributed at the second data base
Reason, distributes to the first data base or the second database processing by read request；If the transition state of data is for migrating
Complete, then read request and write request are all distributed to the second database processing.
Illustrate, if the transition state of data is for migrate, server after receiving read request, meeting
The data corresponding to described read request are searched in the second data base.If the second data base there being described reading ask
Seeking corresponding data, server can pass through logical process (i.e. sever process) in program operation process will
Described read request first distributes to the second database processing, is i.e. provided the user service by the second data base.If
In search procedure, find the data not having in the second data base corresponding to described read request, correspondence is described
Data the most do not move to the second data base, and at this moment described read request can be reallocated to by logical process
One database processing.
Above-mentioned data migration method, during data are moved to the second data base from the first data base,
Server is after the read request receiving user terminal and write request, by detecting the transition state of data
And process described read request and write request, the so process at Data Migration according to described transition state and also may be used
To provide the user with read-write service, the service of data base will not be stopped and bringing unnecessary loss to user.
Refer to Fig. 4, be that read request is distributed to the first data base or the second database processing by an embodiment
Schematic flow sheet.
In the present embodiment, read request is distributed to the first data base or the second database processing specifically includes:
Step S402: search and whether have the data corresponding to described read request in the second data base, if so, hold
Row step S404, if it is not, then perform step S406.
Step S402: described read request is distributed to the second database processing.
Step S406: described read request is distributed to the first database processing.
Illustrate, if user sends read request by terminal, to read data A, then will be the
Two data bases search data A that described read request is corresponding.If the second data base has data A, then can
Described read request is distributed to the second database processing, i.e. by the second data base, data A is returned to user
Terminal.If the second data base does not has data A corresponding to described read request, illustrate data A the most not from
First data base moves to the second data base, accordingly, it would be desirable to described read request is distributed to the first data base
Process, the first data base data A are returned to user terminal.
Refer to Fig. 5, be by the stream in the Data Migration in the first data base to the second data base in an embodiment
Journey schematic diagram.
Step S502: replicate the data in the first data base.
Step S504: detect and the most there are described data in the second data base or whether the second data base has
Receive the removal request that described data are corresponding, if so, perform step S506；If it is not, perform step S508.
Step S506: described data are directly lost.
Step S508: described data are pasted in the second data base.
Specifically, write request includes removal request.In the present embodiment, if number corresponding to described removal request
According to not also being migrated to the second data base, the most described removal request can be with mark mode in the second data after processing
Storehouse carries out record, when described Data Migration to the second data base, if be detected that the second data base connects
Receive the removal request that described data are corresponding, i.e. detect that in the second data base, record has corresponding labelling, this
Data described in sample directly can be dropped.
Illustrating, the second data base, when processing removal request, can increase string conduct in data form
The reserved field of data, if data corresponding to described removal request are not also migrated to the second data base, then institute
State meeting labelling at described reserved field after removal request processes, represent that the data of its correspondence are the most deleted.
The principle of above-mentioned data migration method is described below by concrete application scenarios, and this application scenarios is with platform
Formula computer as terminal, the first data base and the second installing DB on same server, user passes through
Desk computer illustrates as a example by server sends security knowledge browse request and password amendment request.
Refer to Fig. 6, before data also do not migrate, user passes through desk computer 610 in account number safety
The server 620 that the heart is corresponding sends security knowledge browse request and password amendment request respectively.Because these please
The related data asking corresponding was stored in the first data base 622 before not migrating, so server 620
Logical process can be passed through in program operation process by security knowledge browse request and password after receiving request
Amendment requests assignment to the first data base 622 and processes, and is i.e. provided the user service by the first data base 622.
Account number safety center is a kind of account protection software, can provide the user one-stop software security service,
Include the functions such as cryptoguard, account protection, safe health check-up, Modify password, account complaint, allow account
More safe and reliable.
Nowadays, user is required for filling in some personal information by the various accounts of network registry, and these accounts
Number safety extremely important to user.When user wants to understand some security knowledges relevant to account protection,
Just can send security knowledge browse request to server.Server upon receipt of the request, by run one
The program of series, processes described security knowledge browse request, and will be stored in number by certain way
User terminal is fed back to according to the related data in storehouse.
Each account arranges a corresponding password, and data corresponding to this password can be stored in and carry
In data base for service.If user thinks that the cryptosecurity degree arranged before is not high enough, need password
Modify.At this moment, user just can send password amendment request to server.Server is receiving request
Afterwards, by running a series of program, the amendment request of described password is processed, the most just needs to use
Family one new password of write is deposited into the password before replacing in data base, i.e. before number corresponding to password
According to being deleted.
Refer to Fig. 7, due to some uncertain faults so that the data in the first data base 622 need
Promptly move in the second data base 624.During Data Migration, user passes through desk computer 610
The server 620 corresponding to account number safety center have sent security knowledge browse request.Because detecting first
Data in data base 622 the most all move in the second data base 624, then the transition state of data
For migrating, then data corresponding to this request may be had moved in the second data base 624, and also having can
Can the most not move in the second data base 624.Therefore, server 620 after receiving this request, meeting
The data corresponding to security knowledge browse request are searched in the second data base 624.If the second data base 624
In have data corresponding to security knowledge browse request, server 620 can be by patrolling in program operation process
Security knowledge browse request is first distributed to the second data base 624 and is processed, i.e. by the second data base 624 by the process of collecting
Provide the user service.If in search procedure, find that the second data base 624 does not has described safety to know
Know the data corresponding to browse request, illustrate that the data of correspondence the most do not move to the second data base 624,
At this moment described security knowledge browse request can be reallocated to the first data base 622 and processes by logical process.
During Data Migration, if user is corresponding to account number safety center by desk computer 610
Server 620 have sent password amendment request.Because password amendment request belongs to write request, server 620
Also need to number corresponding for password before after the data that the new password inputting user is corresponding store
According to deleting.At this moment, if data corresponding to password before the most do not move to the second data base 624
In, then can carry out record with mark mode in the second data base 624, in the data that password before is corresponding
When moving to the second data base 624, if be detected that record has corresponding labelling in the second data base 624,
The data that password before so is corresponding directly can be dropped.
Refer to Fig. 8, after the data in the first data base 622 all move to the second data base 624,
User sends security knowledge respectively by the server 620 that desk computer 610 is corresponding to account number safety center
Browse request and password amendment request, because the data detected in the first data base 622 all move to the
In two data bases 624, then the transition state of data is that migration completes, and server 620 is after receiving request
In program operation process, by logical process, security knowledge browse request and password can be revised request all to distribute
Process to the second data base 624, i.e. provided the user service by the second data base 624.
As it is shown in figure 9, in one embodiment, it is provided that a kind of data migration device 900, have in realization
State the function of the data migration method of each embodiment.This data migration device 900 include transferring module 902,
Request receiver module 904, detection module 906 and processing module 908.
Transferring module 902 is for by the Data Migration in the first data base to the second data base.
Request receiver module 904 is for receiving read request and the write request of user terminal.
Detection module 906 is for detecting the transition state of data.
Specifically, the detection module 906 data in detection the first data base the most all move to second
In data base, the most then the transition state of data is that migration completes, if it is not, then the transition state of data is
Migrate.
Processing module 908 processes described read request and write request for the transition state according to data.
Specifically, processing module 908 includes allocation unit, if the transition state of data is for migrate, then
Read request, for write request is distributed to the second database processing, is distributed to the first data by described allocation unit
Storehouse or the second database processing；Completing if the transition state of data is migration, the most described allocation unit is used for will
Read request and write request all distribute to the second database processing.
Wherein, if the transition state of data is for migrate, read request is distributed to first by described allocation unit
If data base or the second database processing are particularly as follows: the transition state of data is for migrate, the most described distribution
Unit is for searching in the second data base whether have the data corresponding to described read request, the most then by described
Read request distributes to the second database processing；If it is not, then described read request is distributed to the first database processing.
As shown in Figure 10, in one embodiment, it is provided that a kind of transferring module 1000, this transferring module
1000 include copied cells 1002, detector unit 1004, deletion unit 1006 and application unit 1008.
Copied cells 1002 is for replicating the data in the first data base.
Described data or the second data base has the most been there is in detector unit 1004 in detection the second data base
Whether have and receive the removal request that described data are corresponding.
Delete unit 1006 for described data directly being lost.
Application unit 1008 is for pasting described data in the second data base.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method,
Can be by computer program and complete to instruct relevant hardware, described program can be stored in a calculating
In machine read/write memory medium, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.
Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory,
The non-volatile memory medium such as ROM), or random store-memory body (Random Access Memory, RAM)
Deng.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.
Claims (10)
1. a data migration method, described method includes:
By in the Data Migration in the first data base to the second data base；
Receive read request and the write request of user terminal；
The transition state of detection data；
Transition state according to data processes described read request and write request.
Method the most according to claim 1, it is characterised in that the transition state of described detection data
Step, including:
Detect the data in the first data base and the most all move in the second data base, the most then data
Transition state is that migration completes, if it is not, then the transition state of data is for migrate.
Method the most according to claim 2, it is characterised in that described according to the transition state of data at
Manage the step of described read request and write request, including:
If the transition state of data is for migrate, then write request is distributed to the second database processing, will read
Request assignment to the first data base or the second database processing；
Complete if the transition state of data is migration, then read request and write request are all distributed to the second data base
Process.
Method the most according to claim 3, it is characterised in that described read request is distributed to first number
According to storehouse or the step of the second database processing, including:
Search and whether the second data base has the data corresponding to described read request, the most then please by described reading
Ask and distribute to the second database processing；If it is not, then described read request is distributed to the first database processing.
Method the most according to claim 1, it is characterised in that described write request includes removal request,
Described by the step in the Data Migration in the first data base to the second data base, including:
Replicate the data in the first data base；
Detect and the second data base existed described data the most or whether the second data base receives described
If so, described data are directly lost by the removal request that data are corresponding, if it is not, described data pasted
In second data base.
6. a data migration device, described device includes:
Transferring module, for by the Data Migration in the first data base to the second data base；
Request receiver module, for receiving read request and the write request of user terminal；
Detection module, for detecting the transition state of data；
Processing module, processes described read request and write request for the transition state according to data.
Device the most according to claim 6, it is characterised in that described detection module is used for detection first
Data in data base the most all move in the second data base, the most then the transition state of data is for moving
Shifting completes, if it is not, then the transition state of data is for migrate.
Device the most according to claim 7, it is characterised in that described processing module includes allocation unit,
If the transition state of data is for migrate, the most described allocation unit for distributing to the second data by write request
Storehouse processes, and read request is distributed to the first data base or the second database processing；If the transition state of data is
Migration completes, and the most described allocation unit is for all distributing to the second database processing by read request and write request.
Device the most according to claim 8, it is characterised in that if the transition state of data is for move
Moving, whether the most described allocation unit has the data corresponding to described read request in lookup the second data base,
The most described read request is distributed to the second database processing；If it is not, then described read request is distributed to
First database processing.
Device the most according to claim 6, it is characterised in that described transferring module includes:
Copied cells, for replicating the data in the first data base；
, in detection the second data base, the most there are described data or the second data base be in detector unit
No have receive the removal request that described data are corresponding；
Delete unit, for described data directly being lost；
Application unit, for pasting described data in the second data base.
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