CN104408058B - A kind of method and device of data access - Google Patents
A kind of method and device of data access Download PDFInfo
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- CN104408058B CN104408058B CN201410594200.4A CN201410594200A CN104408058B CN 104408058 B CN104408058 B CN 104408058B CN 201410594200 A CN201410594200 A CN 201410594200A CN 104408058 B CN104408058 B CN 104408058B
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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Abstract
The embodiment of the invention discloses a kind of method and devices of data access.Wherein, this method comprises: receiving data access request；The mark that comes into force of the copy data in local data base is read, the mark that comes into force includes the first value of statistical indicant or the second value of statistical indicant；Whether the mark that comes into force described in judgement is first value of statistical indicant；If so, accessing the local data base according to the data access request；If it is not, then accessing remote database according to the data access request.Implement the embodiment of the present invention, the efficiency of called side access data can be improved, and realizes that the automation between more parts of data sources switches.
Description
Technical field
The present invention relates to computer application technologies, and in particular to a kind of method and device of data access.
Background technique
In complicated enterprise-level application environment, a large amount of called side generally requires the remote data to storage common data
Library carries out high concurrent access.For the pressure for reducing remote database, it usually needs replicate the main notebook data in remote database
Into the local data base where multiple called sides, called side is obtained with copy data by access local database, enterprise
Industry common practice is the special data replicated product of purchase to realize the duplication of data.
Called side is numerous, in main notebook data and the simultaneous enterprise-level environment of copy data, works as data synchronization updating
When local data base failure where failure or stored copies data is repaired, in order to guarantee that the data of access are just
True data generally require manual intervention to select access remote database.As it can be seen that when there is failure of data synchronization or local number
When the problem of breaking down according to library, called side require manual intervention and can not automatically switch to access remote data library inquiry it is correct
Data reduce the efficiency of called side access data.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of data access, and the effect of called side access data can be improved
Rate, and realize that the automation between more parts of data sources switches.
First aspect of the embodiment of the present invention discloses a kind of method of data access, comprising:
Receive data access request；
The mark that comes into force of the copy data in local data base is read, the mark that comes into force includes the first value of statistical indicant or second
Value of statistical indicant, wherein the copy data that first value of statistical indicant is used to identify in local data base is effective, and second value of statistical indicant is used
Copy data in mark local data base is invalid；
Whether the mark that comes into force described in judgement is first value of statistical indicant；
If so, accessing the local data base according to the data access request；
If it is not, then accessing remote database according to the data access request.
Second aspect of the embodiment of the present invention discloses a kind of device of data access, comprising:
Receiving unit, for receiving data access request；
Reading unit, for reading the mark that comes into force of the copy data in local data base, the mark that comes into force includes the
One value of statistical indicant or the second value of statistical indicant, wherein the copy data that first value of statistical indicant is used to identify in local data base is effective, institute
It is invalid to state copy data of second value of statistical indicant for identifying in local data base；
First judging unit, for judging whether the mark that comes into force is first value of statistical indicant；
First access unit, for the mark that comes into force described in judging in first judging unit as first value of statistical indicant
When, the local data base is accessed according to the data access request；
Second access unit, for the mark that comes into force described in judging in first judging unit as second value of statistical indicant
When, remote database is accessed according to the data access request.
The implementation of the embodiments of the present invention has the following beneficial effects:
In the embodiment of the present invention, after receiving data access request, the copy data in local data base is read
Come into force mark, if the mark that comes into force of the copy data in local data base is the first value of statistical indicant, access local database, if originally
The mark that comes into force of copy data in ground database is the second value of statistical indicant, then accesses remote database, call so as to improve
The efficiency of side's access data, and realize that the automation between more parts of data sources switches.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of the method for data access provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of the method for another data access provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of the method for another data access provided in an embodiment of the present invention；
Fig. 4 is a kind of structure chart of data access device provided in an embodiment of the present invention；
Fig. 5 is the structure chart of another data access device provided in an embodiment of the present invention；
Fig. 6 is the structure chart of another data access device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of method and devices of data access, and the effect of called side access data can be improved
Rate.
Referring to Fig. 1, Fig. 1 is a kind of flow diagram of data access method provided in an embodiment of the present invention, such as Fig. 1 institute
Show, the method for the data access may comprise steps of:
S101, data access request is received.
In the embodiment of the present invention, data access request may include that copy data access request and the access of main notebook data are asked
It asks, wherein copy data is located locally in database, and main notebook data is located in remote database, and main notebook data is all effective
Data.
In the embodiment of the present invention, it can be received by data access device and be requested from the copy data for calling method, apparatus to send
Or main notebook data request, wherein the data access device independence called side deployed with devices is in local.The data access device can
To include but is not limited to component, which may include remote access interface package module, data simultaneous module and access routing
Module.Remote access interface package module, which is used for when local replica data invalid, direct by remote access interface
Access remote database；Data simultaneous module, the module is automatic and remote database communicates, and carries out data synchronization updating, and supervise
Controlling local data base, whether synchronized update is completed with remote database.Routing module is accessed, which is used for synchronous according to data
Module judges whether the result that synchronized update is completed selects access remote database or local data base to local data base.
S102, read local data base in copy data the mark that comes into force.
In the embodiment of the present invention, when receiving data access request, access local database is paid the utmost attention to.
In the embodiment of the present invention, the mark that comes into force may include the first value of statistical indicant or the second value of statistical indicant, wherein the first value of statistical indicant
It is effective for identifying the copy data in local data base, the second value of statistical indicant be used to identify copy data in local data base without
Effect.For example, the first value of statistical indicant can identify that copy data is effective, and the second value of statistical indicant can be used with " TRUE " or " 0 " etc.
" FALSE " or " 1 " etc. are invalid to identify copy data.
Whether S103, the judgement mark that comes into force are the first value of statistical indicant.
In the embodiment of the present invention, if the mark that judges to come into force is the first value of statistical indicant, show the pair in current local data base
Notebook data is effective, thens follow the steps S104, if the mark that judges to come into force is the second value of statistical indicant, shows in current local data base
Copy data is invalid, thens follow the steps S105.
S104, according to data access request access local database.
In the embodiment of the present invention, data access device can first obtain local data base mark ID, be then passed to and work as the day before yesterday
Phase (such as September 28 in 2014) and local data base mark ID (such as 10234), according to data access request, pass through local IP access
Interface carrys out access local database.
S105, remote database is accessed according to data access request.
In the embodiment of the present invention, when the copy data in local data base is invalid, the data access device is according to data
Access request can directly access remote database by remote access interface.
Method provided in an embodiment of the present invention can be applied to component, but it should be recognized that the above method is not limited to
Applied to component, all device, equipment and systems that can implement method provided in an embodiment of the present invention belong to protection of the present invention
Range.
In the method depicted in fig. 1, data access device first reads local number after receiving data access request
According to the mark that comes into force of the copy data in library, if the mark that comes into force of the copy data in local data base is the first value of statistical indicant,
Access local database accesses remote data if the mark that comes into force of the copy data in local data base is the second value of statistical indicant
Library, so as to improve the efficiency of called side access data.
Referring to Fig. 2, Fig. 2 is the flow diagram of the method for another data access provided in an embodiment of the present invention, such as
Shown in Fig. 2, the method for the data access the following steps are included:
S201, data access request is received.
In the embodiment of the present invention, data access request may include that copy data access request and the access of main notebook data are asked
It asks, wherein copy data is located locally in database, and main notebook data is located in remote database, and main notebook data is all effective
Data.
S202, judge copy data to be visited whether be real-time update data.
In the embodiment of the present invention, if copy data to be visited is the data of real-time update, S203 is thened follow the steps, if wait visit
It asks that copy data is the data of non-real-time update, thens follow the steps S204.
In the embodiment of the present invention, copy data to be visited be according to whether real-time update occurs in the daytime and be divided into real time
More new data and non-real-time update data.For example, the permission and task of employee can occur to change in real time, and employee's data can
With the data as real-time update, the branch, department of mechanism is generally fixed and invariable, and organization data can be as non real-time
The data of update.
In the embodiment of the present invention, data access device pre-defines different service interface numbers, service interface number
For identifying the type of copy data to be visited, data access device can obtain number of copies to be visited according to the interface index
According to real-time update information.For example, when called side calls service interface number A0861E022, because A0861E022 interface is
Employee's data access interface, therefore the copy data to be called is the data of real-time update.
In the embodiment of the present invention, real-time update data are having the application that comes into force in real time in the daytime, and non-real-time update data are in day
Between without coming into force application in real time.Assuming that local data base is to synchronize update at night and remote database, if to be visited
Copy data be it is non-implement update data, then would not be updated in the copy data to be visited in the daytime, in the daytime
When access local database, the copy data in local data base is exactly effective data；If copy data to be visited is
The data of real-time update, then real-time update can occur in the daytime for the copy data to be visited, since local data base is only at night
Between with remote database synchronize update, if when real-time update data in access local database in the daytime, it is same at night
It is invalid in the daytime for the copy data that step updates, at this time in order to ensure the data of access are correct, it is necessary to access distal end
Database.
S203, remote database is accessed according to data access request.
In the embodiment of the present invention, when judging copy data to be visited for the data of real-time update, show local number at this time
According to the copy data failure in library, need to access the main notebook data in remote database by remote access interface.
S204, read local data base in copy data the mark that comes into force.
In the embodiment of the present invention, when judging copy data to be visited not is the data of real-time update, accessible local
Database.
In the embodiment of the present invention, the mark that comes into force may include the first value of statistical indicant or the second value of statistical indicant, wherein the first value of statistical indicant
It is effective for identifying the copy data in local data base, the second value of statistical indicant be used to identify copy data in local data base without
Effect.For example, the first value of statistical indicant can identify that copy data is effective, and the second value of statistical indicant can be used with " TRUE " or " 0 " etc.
" FALSE " or " 1 " etc. are invalid to identify copy data.
Whether S205, the judgement mark that comes into force are the first value of statistical indicant.
In the embodiment of the present invention, if the mark that judges to come into force is the first value of statistical indicant, S206 is thened follow the steps, if judging to come into force
When mark is the second value of statistical indicant, then S203 is returned to step.
S206, according to data access request access local database.
In the embodiment of the present invention, after receiving data access request, first judge whether copy data to be visited is real
The data of Shi Gengxin, if so, access remote database, if it is not, then reading the mark that comes into force of the copy data in local data base
Will, if the mark that comes into force is the first value of statistical indicant, access local database accesses if the mark that comes into force is the second value of statistical indicant
Remote database, to improve the efficiency of called side access data.
Referring to Fig. 3, Fig. 3 is the method for another data access provided in an embodiment of the present invention, as shown in figure 3, the party
Method the following steps are included:
S301, data access request is received.
S302, judge whether copy data to be visited is the data of real-time update, if so, S303 is thened follow the steps, if it is not,
Then follow the steps S304.
S303, remote database is accessed according to data access request.
S304, the mark that comes into force is initialized.
In the embodiment of the present invention, the mark that comes into force may include the first value of statistical indicant or the second value of statistical indicant, wherein the first value of statistical indicant
It is effective for identifying the copy data in local data base, the second value of statistical indicant be used to identify copy data in local data base without
Effect.For example, the first value of statistical indicant can identify that copy data is effective, and the second value of statistical indicant can be used with " TRUE " or " 0 " etc.
" FALSE " or " 1 " etc. are invalid to identify copy data.
Specifically, the mark that comes into force of the copy data in local data base is initialized, the initial value of the mark that comes into force is the
Two values of statistical indicant.
S305, present system time is obtained.
In the embodiment of the present invention, present system time includes current system date and current system time point.Such as: 2014
September 28 days, at 11 points in the morning 10 minutes.
S306, judge whether present system time reaches the initial time of the local data base synchronized update of current record.
In the embodiment of the present invention, the initial time of local data base synchronized update can be fixed time point, such as morning 1
Point or 2:00 AM, the embodiment of the present invention is without limitation.
In the embodiment of the present invention, local data base and remote database are all synchronizing update daily, thus, in difference
When time accesses data, the time of local data base synchronized update is different, needs to judge whether present system time reaches and works as
The initial time of the local data base synchronized update of preceding record.For example, the initial time of local data base synchronized update is daily
1:00 AM, if present system time is at 11 points in No. 28 mornings 10 minutes, the local data base synchronized update of current record is risen
Time beginning is No. 29 1:00 AMs, if present system time is No. 29 20 points of evening, the local data base of current record is synchronous more
New initial time is No. 30 1:00 AMs.
In the embodiment of the present invention, if present system time reaches the starting of the local data base synchronized update of current record
Between, show that local data base starts with remote database synchronized update, thens follow the steps S305.
Whether synchronized update is completed for S307, monitoring local data base.
In the embodiment of the present invention, if monitoring local data base synchronized update is completed, S308 is thened follow the steps, if monitoring is local
Database does not have synchronized update completion, thens follow the steps S309.
In the embodiment of the present invention, monitor whether local data base synchronizes by the data simultaneous module in data access device
It updates and completes.
S308, the mark that will come into force are set to the first value of statistical indicant.
S309, during the local data base synchronized update, come into force described in holding mark be the second value of statistical indicant.
S310, read local data base in copy data the mark that comes into force.
Whether S311, the judgement mark that comes into force are the first value of statistical indicant.
In the embodiment of the present invention, if judge the mark that comes into force of the copy data in local data base for the first value of statistical indicant,
S312 is thened follow the steps, if judge the mark that comes into force of the copy data in local data base for the second value of statistical indicant, executes step
Rapid S303.
S312, according to data access request access local database.
In the embodiment of the present invention, after receiving data access request, by coming into force for the copy data in local data base
Mark is initialized as the second value of statistical indicant.Present system time is obtained, and judges whether present system time reaches current record
The initial time of local data base synchronized update, if reaching, monitoring local data base, whether synchronized update is completed, if synchronizing more
New to complete, then the mark that will come into force is set to the first value of statistical indicant, if synchronized update is not completed, in local data base synchronized update mistake
Cheng Zhong, the holding mark that comes into force is the second value of statistical indicant, then reads and comes into force mark, and whether the mark that judges to come into force is the first value of statistical indicant,
Indicate according to coming into force and select access remote database or local data base, to improve the efficiency of data access.
Referring to Fig. 4, Fig. 4 is a kind of structure chart of data access device provided in an embodiment of the present invention, as shown in figure 4,
The device includes:
Receiving unit 401, for receiving data access request；
Reading unit 402, for reading the mark that comes into force of the copy data in local data base, which includes the
One value of statistical indicant or the second value of statistical indicant, wherein the copy data that the first value of statistical indicant is used to identify in local data base is effective, the second mark
The copy data that will value is used to identify in local data base is invalid；
First judging unit 403, for judging whether the mark that comes into force of the copy data in local data base is the first mark
Will value；
First access unit 404, for judging the mark that comes into force of copy data for the first mark in the first judging unit 403
When value, according to data access request access local database；
Second access unit 405, for judging the mark that comes into force of copy data for the second mark in the first judging unit 403
When value, remote database is accessed according to data access request.
In the data access device of Fig. 4 description, receiving unit 401 is after receiving data access request, first by reading
The mark that comes into force for the copy data for taking unit 402 to read in local data base, then local data is judged by the first judging unit 403
Whether the mark that comes into force of the copy data in library is the first value of statistical indicant, if the first value of statistical indicant, is then visited by the first access unit 404
It asks local data base, if the second value of statistical indicant, then remote database is accessed by the second access unit 405, adjusted so as to improve
With the efficiency of side's access data.
Referring to Fig. 5, Fig. 5 is the structure chart of another data access device provided in an embodiment of the present invention, such as Fig. 5 institute
Show, which includes:
Receiving unit 501, for receiving data access request；
Second judgment unit 502, for reading the mark that comes into force of the copy data in local data base in reading unit 503
Before, judge copy data to be visited whether be real-time update data；
Reading unit 503, for judging copy data to be visited not and being the data of real-time update in second judgment unit 502
When, the mark that comes into force of the copy data in local data base is read, which includes the first value of statistical indicant or the second value of statistical indicant,
Wherein, the copy data that the first value of statistical indicant is used to identify in local data base is effective, and the second value of statistical indicant is for identifying local data
Copy data in library is invalid；
Second access unit 504, for judging copy data to be visited for the number of real-time update in second judgment unit 502
According to when, according to data access request access remote database；
First judging unit 505, for judging whether the mark that comes into force of the copy data in local data base is the first mark
Will value；
First access unit 506, for judging the mark that comes into force of copy data for the first mark in the first judging unit 505
When value, according to data access request access local database；
Second access unit 504 is also used to judge the mark that comes into force of copy data for the in the first judging unit 505
When two values of statistical indicant, remote database is accessed according to data access request.
In the data access device of Fig. 5 description, receiving unit 501 is after receiving data access request, first by the
Two judging units judge whether copy data to be visited is the data of real-time update, if so, being visited by the second access unit 504
Ask remote database, if it is not, then by reading unit 503 read local data base in copy data come into force mark and then
Whether the mark that comes into force that the copy data in local data base is judged by the first judging unit 505 is the first value of statistical indicant, if
One value of statistical indicant, then by the first access unit, 506 access local databases, if the second value of statistical indicant, then by the second access unit
504 access remote databases, so as to improve the efficiency of called side access data.
Referring to Fig. 6, Fig. 6 is the structure chart of another data access device provided in an embodiment of the present invention, such as Fig. 6 institute
Show, which includes:
Receiving unit 601, for receiving data access request；
Second judgment unit 602, for judge copy data to be visited whether be real-time update data；
Second access unit 603, for judging copy data to be visited for the number of real-time update in second judgment unit 602
According to when, access remote database；
Initialization unit 604, for judging copy data to be visited not and being the number of real-time update in second judgment unit 602
According to when, initialize local data base in copy data the mark that comes into force；Wherein, the initial value of the mark that comes into force is the second mark
Value, the mark that comes into force include the first value of statistical indicant or the second value of statistical indicant, and the first value of statistical indicant is used to identify the copy in local data base
Data are effective, and the copy data that the second value of statistical indicant is used to identify in local data base is invalid；
Acquiring unit 605, for obtaining present system time；
Whether third judging unit 606, the present system time for judging that acquiring unit 605 obtains reach current record
Local data base synchronized update initial time；
Monitoring unit 607, the present system time for judging that acquiring unit 605 obtains in third judging unit 606 arrive
Up to the local data base synchronized update of current record initial time when, monitoring local data base whether synchronized update complete；
Marking unit 608, for after the completion of monitoring unit 607 monitors local data base synchronized update, will to come into force mark
It is set to the first value of statistical indicant；
The marking unit 608 is also used to during local data base synchronized update, and holding comes into force mark for the second mark
Will value；
Reading unit 608, for reading the mark that comes into force of the copy data in local data base；
First judging unit 610, for judging whether the mark that comes into force is the first value of statistical indicant；
First access unit 611, for when the first judging unit 610 judges to come into force mark as the first value of statistical indicant, according to
Data access request access local database；
Second access unit 603 is also used to judge to come into force mark in the first judging unit 610 as the second value of statistical indicant
When, remote database is accessed according to data access request.
In the data access device of Fig. 6 description, after receiving unit 601 receives data access request, first by second
Judging unit 602 judges whether copy data to be visited is the data of real-time update, if so, being visited by the second access unit 603
Ask remote database, if it is not, then by initialization unit 604 by the mark that comes into force of copy data be set to the second value of statistical indicant and then
Judge whether present system time that acquiring unit 605 obtains reaches the local data of current record by third judging unit 605
The initial time of library synchronized update, if reaching, monitoring local data base by monitoring unit 607, whether synchronized update is completed, if
It completes, then the first value of statistical indicant is set to by the mark that will come into force of marking unit 608, if it is not, then in local data base synchronized update process
In, holding comes into force mark for the second value of statistical indicant.The reading of reading unit 609 comes into force after mark, judges to give birth to by the first judging unit 610
Whether valid flag is the first value of statistical indicant, if so, by 611 access local database of the first access unit, if it is not, then being visited by second
Ask that unit 603 accesses remote database, to improve the efficiency of called side access data.
It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned
The combination of actions of column, but those skilled in the art should understand that, the application is not limited by the described action sequence, because
For according to the application, certain some step be can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily this Shen
It please be necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), programmable read only memory (Programmable Read-only Memory, PROM), erasable programmable is read-only deposits
Reservoir (Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only memory (One-
Time Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only memory
(Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact
Disc Read-Only Memory, CD-ROM) or other disc memories, magnetic disk storage, magnetic tape storage or can
For carrying or any other computer-readable medium of storing data.
It is provided for the embodiments of the invention a kind of data access method above and device is described in detail, herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (6)
1. a kind of method of data access characterized by comprising
It receives from the data access request for calling method, apparatus, the data access request includes copy data access request and master
Notebook data access request, wherein copy data is located locally in database, and main notebook data is located in remote database；
According to the service interface of the called side equipment calls number, judge copy data to be visited whether be real-time update number
According to, wherein the service interface numbers the type for identifying copy data to be visited；
If copy data to be visited is the data of non-real-time update, the life of the copy data in the local data base is initialized
Valid flag；Wherein, the initial value of the mark that comes into force is the second value of statistical indicant；
Monitoring local data base, whether synchronized update is completed, if so, the mark that comes into force is set to the first value of statistical indicant, if it is not,
Then during the local data base synchronized update, the mark that comes into force described in holding is second value of statistical indicant；
The mark that comes into force of the copy data in local data base is read, the mark that comes into force includes first value of statistical indicant or described
Second value of statistical indicant, wherein the copy data that first value of statistical indicant is used to identify in local data base is effective, second mark
Value is invalid for identifying the copy data in local data base；
Whether the mark that comes into force described in judgement is first value of statistical indicant；
If the mark that comes into force is first value of statistical indicant, the local data base is accessed according to the data access request；
If copy data to be visited is the data of real-time update or the mark that comes into force is second value of statistical indicant, show it is described to
It is invalid to access copy data, then remote database is accessed according to the data access request.
2. the method according to claim 1, wherein whether synchronized update completes it to the monitoring local data base
Before, the method also includes:
Obtain present system time；
Judge whether the present system time reaches the initial time of the local data base synchronized update of current record；
If so, execute the monitoring local data base whether synchronized update completion the step of.
3. method according to claim 1 or 2, which is characterized in that the access local data base, comprising:
It obtains local data base and identifies ID；
ID, which is identified, according to the local data base accesses the local data base.
4. a kind of device of data access characterized by comprising
Receiving unit, for receiving from the data access request for calling method, apparatus, the data access request includes number of copies
According to access request and main notebook data access request, wherein copy data is located locally in database, and main notebook data is located at distal end number
According in library；
First judging unit judges copy data to be visited for numbering according to the service interface of the called side equipment calls
Whether be real-time update data, wherein the service interface numbers the type for identifying copy data to be visited；
Initialization unit, for when first judging unit judges copy data to be visited for the data of non-real-time update,
Initialize the mark that comes into force of the copy data in the local data base；Wherein, the initial value of the mark that comes into force is the second mark
Will value；
Monitoring unit, for monitoring local data base, whether synchronized update is completed；
Marking unit, for after the completion of the monitoring unit monitors local data base synchronized update, the mark that comes into force to be set
For the first value of statistical indicant；
The marking unit is also used to during the local data base synchronized update, and the mark that comes into force described in holding is described
Second value of statistical indicant；
Reading unit, for reading the mark that comes into force of the copy data in local data base, the mark that comes into force includes described the
One value of statistical indicant or second value of statistical indicant, wherein the copy data that first value of statistical indicant is used to identify in local data base has
Effect, the copy data that second value of statistical indicant is used to identify in local data base are invalid；
Second judgment unit, for judging whether the mark that comes into force is first value of statistical indicant；
First access unit, when for the mark that comes into force described in judging in the second judgment unit as first value of statistical indicant, root
The local data base is accessed according to the data access request；
Second access unit, for judging copy data to be visited for the data of real-time update or institute in first judging unit
State second judgment unit judge described in come into force mark as second value of statistical indicant, when showing that the copy data to be visited is invalid,
Remote database is accessed according to the data access request.
5. device according to claim 4, which is characterized in that described device further include:
Acquiring unit, for obtaining present system time；
Whether third judging unit, the present system time for judging that the acquiring unit obtains reach current record
The initial time of local data base synchronized update；
The monitoring unit, specifically for judging the present system time that the acquiring unit obtains in the third judging unit
When reaching the initial time of the local data base synchronized update of current record, monitoring local data base whether complete by synchronized update.
6. device according to claim 5, which is characterized in that
The acquiring unit is also used to obtain local data base mark ID；
First access unit, specifically for the local data base mark ID access institute obtained according to the acquiring unit
State local data base.
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| CN103714163A (en) * | 2013-12-30 | 2014-04-09 | 中国科学院信息工程研究所 | Pattern management method and system of NoSQL database |
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