CN105989049A - Data middle layer realizing method and system - Google Patents
Data middle layer realizing method and system Download PDFInfo
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- CN105989049A CN105989049A CN201510061991.9A CN201510061991A CN105989049A CN 105989049 A CN105989049 A CN 105989049A CN 201510061991 A CN201510061991 A CN 201510061991A CN 105989049 A CN105989049 A CN 105989049A
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Abstract
The invention discloses a data middle layer realizing method and a data middle layer realizing system. The data middle layer realizing method comprises the following steps: deploying and configuring a memory database; setting a corresponding relationship of the memory database and data tables in a file database; accessing to the memory database by application service, and proposing a read-writing request; synchronizing the memory database with the file database according to the corresponding relationship after responding to the read-writing request. By adopting the scheme of the embodiment of the invention, the speed and the efficiency of file database access can be increased, the data security can be improved, and the user experience can be greatly improved.
Description
Technical field
The present invention relates to Internet technical field, particularly to a kind of data middle layer realization method and system.
Background technology
Middleware (middleware) is that a class connects component software and the computer software of application, and it includes one
Group service.So that the multiple softwares operated on one or more machine are interacted by network.This skill
The interoperability that art is provided, has promoted the evolution of Uniformly distributed formula architectural framework, and this framework is generally used for propping up
Holding and simplify the distributed application program of those complexity, it includes web server, transaction monitor and message
Queue software.
Middleware is a big class of basic software, belongs to the category of reusable software.As its name suggests, middleware
It is in the centre of operating system software and the application software of user.
Middleware on operating system, network and data base, the lower floor of application software, total effect be for
The application software being in oneself upper strata provides the environment running with developing, and helps user flexibility, develops efficiently
Application software with integrated complex.Numerous about in the definition of middleware, commonplace received it is
IDC statement: middleware is a kind of independent systems soft ware or service routine, Distributed Application software by
This software between different technology share resource, middleware be positioned at client-server operating system it
On, management calculates resource and network service.
The definition of middleware is shown by IDC, and middleware is a class software, rather than a kind of software；Middleware is not only
Only realize interconnection, also to realize the interoperability between application；Middleware is software based on distributed treatment,
Prominent feature is its network communicating function.
Middleware classification (classification of IDC): be broadly divided into six classes: terminal emulation/screen conversion middleware,
In the middle of data access middleware, remote procedure call middleware, message-oriented middleware, transaction middleware, object
Part.
Data access service middleware, it is simply that refer to that all connect application program and the software of data base.
Memory database, as the term suggests being placed in internal memory the data base of directly operation exactly by data.Relative to
Disk, the reading and writing data speed of internal memory to be several orders of magnitude higher, and saves the data in internal memory and compares from magnetic
The performance that can be greatly enhanced application is accessed on dish.
Memory database has abandoned the traditional approach of data in magnetic disk management, all heavy in internal memory based on total data
Newly devise architecture, and be also carried out corresponding in terms of data buffer storage, fast algorithm, parallel work-flow
Improvement, so data processing speed is more a lot of soon than the data processing speed of traditional database, the most all exist
More than 10 times.The maximum feature of memory database is its " primary copy " or " working version " memory-resident, the most alive
Move the affairs memory copying only with real-time internal memory database to come into contacts with.
In prior art, more and more depend on the Various types of data of database purchase.But, traditional number
Read-write operation according to storehouse is more slow, often becomes the bottleneck of data access.And, directly to data base's
Reading also exists many safety problems.Thus, need the reality wanting a kind of data middle layer to database access badly
Existing, to improve the velocity efficiency to database access and safety.
Summary of the invention
The present invention provides a kind of data middle layer realization method and system, in order to solve in prior art data
The speed accessing existence in storehouse is slow, efficiency is low, the problem of poor stability.
The present invention provides a kind of data middle layer implementation method, including:
Deployment configuration memory database；
Set the corresponding relation of tables of data in described memory database and document data bank；
Application service accesses described memory database and proposes read-write requests；
Described memory database is after responding described read-write requests, according to described corresponding relation, with described literary composition
Part data base synchronize.
Described method also includes:
Described memory database is consistent with file data library structure.
Described corresponding relation includes:
Add the read-only data stored in document data bank to memory database readonly type
In cache group；
Add the data needing read-write of storage in document data bank to memory database writethrough
The cache group of global type.
Described method also includes:
Start replication agent, in data are loaded into memory database in document data bank；
Adjusting the data access direction of application service, it is right application service to be revised as the access of document data bank
The access of memory database.
Described method also includes:
Described memory database according to the read-write requests of described application service, application service described in anticipation next step
Data content may be read, in described document data bank, read described data content.
Described method also includes:
The data content that described memory database writes for described application service, application service described in anticipation is
No meeting is read at once, the most not synchronize with described document data bank；Otherwise, same with described document data bank
Step.
A kind of data middle layer realizes system, including:
Memory database deployment unit, for deployment configuration memory database；
Corresponding relation setup unit, for deployment configuration memory database；
Read-write processing unit, for receiving the read-write requests of described application service；
Internal storage data library unit, for responding after described read-write requests, according to described corresponding relation, with
Described document data bank synchronizes.
Described system also includes:
Described internal storage data library unit is additionally operable to start replication agent, data in document data bank is added
It is downloaded in memory database；
Described read-write processing unit is additionally operable to adjust the data access direction of application service, by application service to literary composition
The access of part data base is revised as the access to memory database.
Described internal storage data library unit is additionally operable to:
According to the read-write requests of described application service, application service described in anticipation next step may read in data
Hold, in described document data bank, read described data content.
Described internal storage data library unit is additionally operable to:
The data content that described application service is write, whether application service described in anticipation can read at once, if
It is, not synchronize with described document data bank；Otherwise, synchronize with described document data bank.
Embodiment of the present invention deployment configuration memory database；Set in described memory database and document data bank
The corresponding relation of tables of data；Application service accesses described memory database and proposes read-write requests；Described interior poke
According to storehouse after responding described read-write requests, according to described corresponding relation, carry out same with described document data bank
Step.The scheme of the embodiment of the present invention, it is possible to increase the speed of document data bank access and efficiency, and improve number
According to safety, greatly improve user experience.
Other features and advantages of the present invention will illustrate in the following description, and, partly from explanation
Book becomes apparent, or understands by implementing the present invention.The purpose of the present invention and other advantages can
Realize by structure specifically noted in the description write, claims and accompanying drawing and obtain
?.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with this
Bright embodiment is used for explaining the present invention together, is not intended that limitation of the present invention.In the accompanying drawings:
A kind of data middle layer implementation method principle flow chart that Fig. 1 provides for the embodiment of the present invention 1；
A kind of data middle layer that Fig. 2 provides for the embodiment of the present invention 2 realizes system structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that described herein
Preferred embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.
As it is shown in figure 1, a kind of data middle layer implementation method principle process provided for the embodiment of the present invention 1
Figure, wherein,
Step 11, deployment configuration memory database.
Memory database, as the term suggests being placed in internal memory the data base of directly operation exactly by data.Relative to
Disk, the reading and writing data speed of internal memory to be several orders of magnitude higher, and saves the data in internal memory and compares from magnetic
The performance that can be greatly enhanced application is accessed on dish.Meanwhile, memory database has abandoned data in magnetic disk management
Traditional approach, in internal memory, all redesigned architecture based on total data, and data buffer storage,
Fast algorithm, parallel work-flow aspect have been also carried out being correspondingly improved, so data processing speed compares traditional data
The data processing speed in storehouse is a lot, the most all more than 10 times soon.The maximum feature of memory database is
Its " primary copy " or " working version " memory-resident, i.e. active transaction only internal memory with real-time internal memory database is copied
Shellfish is come into contacts with.Obviously, it requires bigger amount of ram, but whole data base of the most any moment is left in
Internal memory, i.e. memory database system are also intended to process I/O.
Memory database exchanges data process real-time, memory database to sacrifice memory source for for cost
It is all relevant database product necessary to each enterprise of current communication society with disk database, disk
What data base solved is massive store and data analysis problems, and memory database solution is to process in real time
Problem concurrent with height.Both existence are complementary, and the real-time process performance of affairs of memory database is wanted
Much stronger than disk database.But relative, his secure data area is also not reaching to disk database ratio
The stage of shoulder.
Memory database using physical memory as the first storage medium of data, and using disk as backup.With
The development of telecommunication service, system is the highest to the requirement of real-time and the requirement of amendment flexible to business,
Demand for memory database is more and more higher in such cases.The way of disk database is data to be deposited
Entering in internal memory and process, manageability and the data security reliability of this mode the most do not ensure.And it is interior
Deposit data storehouse is improved for this weakness just.
The technology of memory database, a critically important feature, is the data in internal memory to be realized full thing
Business processes, and this is only data to be placed in internal memory diverse with forms such as arrays.Further, interior poke
Unrelated with application according to storehouse, it is clear that this architecture has its reasonability.Internal memory engine can realize looking into
Asking and use identical data base with archive function, memory table has also used with disk table simultaneously
Exactly the same access method.The selection of storage, is fully transparent for application developer.
For memory database, it is achieved that data management in internal memory, and it is not only as data
The caching in storehouse.Data base data in magnetic disk block being cached in hosting unlike other, the internal memory of memory database
Engine employs the specially designed Data Structure and Algorithm into random-access memory, and this design makes it avoid
The problem often destroying cache database performance because using sequentialize commands.By memory database, reduce
Magnetic disc i/o, it is possible to reached the process that the traditional database based on magnetic disc i/o cannot be intended in contrast
Speed.
In the present embodiment, memory database needs consistent with disk database (document data bank) structure, this
Sample prescription just data between memory database with document data bank are corresponding and operation.Document data bank is to close coefficient
According to storehouse, then memory database equally needs to be set to relational database.It practice, memory database can be
One mirror image of document data bank, simply scale is less than document data bank, wherein stores a part of file data
Data in storehouse.
Step 12, the corresponding relation of tables of data in set memory data base and document data bank.
Data base is the important component part in large-scale application system, often enriching along with application system function
And the passage of time, the data in data base all can be in growth in various degree, and traditional data base is
It is data base based on disk, such as oracle, db2, SQL Server etc..When disk database stores
Data when reaching to a certain degree, data base there will be I/O bottleneck, performance also can degradation, application
Access and also can slowly wait.Faced with this situation, internal storage data can be disposed on big inner server configuring
Storehouse and application, and then utilize memory database technology to be cached in internal memory by the hot spot data stored in disk,
To reach to eliminate the bottleneck of disk I/O, improve the performance of system.
Corresponding with document data bank for memory database, not only need the correspondence of data, in addition it is also necessary to set up
With manage relevant response mechanism, to be automatically performed data read-write between two data bases with synchronization.
Configuration files database, sets up management user, and gives corresponding authority；Configuration memory database,
Set up cache management user, cache group is joined in memory database, start cache agent；
Definition cache group, the data accessed by analyzing application are to do which kind of operation, including read-only or readable
Writeable, wherein:
Add the read-only data stored in disk database to memory database readonly type
In cache group, i.e. data in this partial memory are read-only, will not synchronize back in disk database；Will
In disk database, the data needing read-write of storage add memory database writethrough global class to
In the cache group of type, i.e. data in this partial memory are readable writeable, and can return disk by real-time synchronization
In data base.So, the respective operations for Various types of data has been ensured.
Cache group towards be static caching system, the download website of such as google family, be used for delaying
Deposit the file block of correspondence.Operating once set, value corresponding for key the most no longer changes.The when of use,
Need the set operation used during self-defined cache miss.When there is miss when, first can be from according to key
Consist hash value find the peer of correspondence, remove to find in peer the value of correspondence.If can not find,
Then use self-defining get function to obtain alue from slow caching (such as db, file reads), and fill right
Answer peer.Obtain next time, just directly take out from cache, do not visit again slow caching.It addition, be
Avoid network to become bottleneck, after local peer obtains cache, can exist in the localCache of this locality, logical
Cross lru algorithm to be managed.
The code of cache group is divided into consistenhash, cache grouppb, and lru, singleflight etc. are several
Individual catalogue, deposits concordance Hash respectively, the protobuf agreement of cache group, and lru algorithm realizes,
It is used for ensureing the singleflight of evaluation operation Exactly-once.
After configuration is complete, start replication agent, data in document data bank are loaded into interior poke
According in storehouse；Adjust the data access direction of application service, the access of document data bank is revised by application service
For the access to memory database.Application service will the most directly access file data to the access of data base
Storehouse, and it is directed to memory database.
Here, it is necessary first to by the data syn-chronization in memory database and document data bank.Data syn-chronization is not
That all of data are fully synchronized, but according to actual application service request operation, it would be desirable to data syn-chronization
To memory database.When application service accesses memory database first, memory database does not has data.
Request according to application service, it would be desirable to data syn-chronization in memory database, be then returned to application clothes
Business.If application service carries out write operation, the most first in write memory database, the most again by memory database
By this data syn-chronization to document data bank.
Data in memory database are not persistence, but preserve as required.For need not
The data preserved, according to the principle of storehouse, by the data deletion used the earliest and write new data.
Memory database is synchronization with document data bank, has kinds of schemes, and such as, memory database is by thing
Business log recording write log buffer district.Memory database is the relational database system of a kind of internal memory optimization,
All left in physical memory by data and metadata, improve the operation response time of data base.Affairs day
Will is one and the separate file of database file, all changes that data base is carried out by storage, and all remembers
Record is inserted, updates, deletes, is submitted to, rollback and data base's patterns of change.Under default condition, all numbers
Transaction journal is all used according to storehouse.The use of transaction journal is optional, but, unless because of cause specific not
Use, otherwise should use all the time.Operating band has the data base of transaction journal can provide higher error protection merit
Energy, better performance and data copy function.
Described transaction journal is specifically as follows WAL transaction log file, for recording the thing of memory database
Business processes information.WAL is a kind of standard method realizing transaction journal.In short, the middle thought of WAL
Want that the amendment to the data file carrier of table and index (WAL be) must be to can only occur in these amendments
After having have recorded daily record.Transaction journal in log buffer district is unformatted transaction log file.
For data base, in order to realize basic ACID characteristic, it is necessary to before the transaction commits, will
Affairs content is written in transaction log file with certain form.ACID characteristic: self-explanatory characters business atomicity,
Concordance, isolation and persistency.The atomicity (Atomicity) of affairs refers to affairs or all
Perform, or do not perform.The concordance (Consistency) of affairs refers to that affairs are consistent from one data base
State be converted to another state.
The isolation (Isolation) of affairs is that other affairs are detectable the shadow of affairs before affairs are submitted to
Ring.The most plural affairs do not have the state of staggered execution.Because so may result in number
According to inconsistent.The persistency (Durability) of affairs refers to that once affairs are submitted to, and it is permanent.Namely
After affairs are run successfully, the renewal with regard to system is permanent, will not unprovoked rollback.
And for memory database, in order to reach high performance, often reduce the requirement of " D " characteristic,
The most do not use the such each transaction log record of document data bank it is first necessary to write disk file and be written to
The submission affairs that after merit, ability is real, but first transaction log record is written to operating system shared drive
One transaction journal buffer area in district, is brushed out disk by transaction journal asynchronously by log update process afterwards
On transaction log file.Therefore, memory database the strictest in accordance with ACID characteristic.
Definition memory database and the corresponding relation of document data bank tables of data.Transaction journal refresh process is asynchronous
Ground is by the information of the described transaction journal in described log buffer district, according to described memory database and number of files
According to the corresponding relation of database data table, it is synchronized in document data bank.Document data bank can be Oracle or
DB2 or Informix etc., be suitable for Transaction Processing (Online Transaction Processing,
OLTP).Described transaction journal in transaction journal buffer area is unformatted transaction log file.
Owing to memory database and the corresponding relation of document data bank tables of data can be defined as required, therefore
The corresponding relation of memory database and document data bank tables of data is configurable.Described method is according to affairs
Log update process, asynchronously by the information in the described transaction journal in described log buffer district, according to institute
State memory database and the corresponding relation of document data bank tables of data, be synchronized in document data bank.Therefore,
Can ensure that memory database is consistent with document data bank constraint.
Constraint database is to ensure that the integrity of data and a set of mechanism of realizing.Mainly include
NOTNULL constraint, UNIQUE constraints, PRIMARY KEY constraint, FOREIGN KEY are about
Bundle.NOT NULL constraint is applied on single data row, and its protection data row it is necessary to have
Data value.UNIQUE constraints can protect the multiple data in table to arrange, it is ensured that in the data row of protection
The data of any two row are different from.PRIMARY KYE constraint can protect one or more row.
PRIAMRY KEY constraint can act on each data row jointly with NOT NULL constraint.Table has uniquely
Primary key.FOREIGN one or more data of KEY confining guard arrange, it is ensured that each data row
Packet containing one or more null values, or on the data row of protection, have Primary key or unique simultaneously
Constraint.
Memory database and the corresponding relation of document data bank tables of data, can be to pass through schema file
(schema) define.Memory database, to the method for data synchronization of document data bank, can pass through schema
Unformatted transaction log file is carried out form conversion, is inserted in document data bank.Acted on behalf of by transmission
(cacheagent) ensure that memory database is consistent with the constraint of document data bank, data type is compatible.
Step 13, application service accesses memory database and proposes read-write requests.
Access the sensing of data base owing to have modified application service, all access of application service are directed to interior poke
According to storehouse, thus, application service needs to propose read-write requests to memory database.For reading the request of data,
Memory database can self search whether to there are this data now, if having, directly replys this request.If it is interior
Deposit data storehouse does not has asked data, then needs to ask this data to document data bank, these data are same
Step is to memory database, then responds the read request of application service.For write operation, memory database is directly write
Enter data to relevant position.
Owing to the efficiency of memory database is the highest, even if then needing request data from document data bank, carried
The time delay come also is controlled.
Step 14, memory database is after response read-write requests, according to corresponding relation, with document data bank
Synchronize.
Memory database is responding the read-write requests of application service, after returning related data, needs obtaining
Data arrange.For the data of write, asynchronous is synchronized in document data bank, to ensure file
The content intact of data base.For the data read from document data bank, first enter elder generation according further to storehouse
Go out principle, be saved in memory database, only needs write more data when, will use the earliest
Data deletion.
In order to improve the efficiency of read-write, memory database is according to the read-write requests of described application service, anticipation institute
Next step may read data content to state application service, reads in described data in described document data bank
Hold.The step for, it is to preferably improve efficiency, sets the process of an anticipation.Application service is being read
When taking related data, memory database is according to association algorithm, and next step may to be calculated application service
The data read, read in memory database in advance, to facilitate next step reading data of application service to obtain
Response faster.There is the association algorithm of a lot of anticipation in prior art, this is not limited by the present embodiment.
Further, the data content that memory database writes for application service, whether anticipation application service
Can read at once, the most not synchronize with described document data bank；Otherwise, synchronize with described document data bank.
This step is equally in order to improve efficiency, and the content for write needs to be stored temporarily in memory database, with
Standby application service read requests at short notice.And wait the most at one's leisure in an asynchronous manner by these data with
Document data bank synchronizes.
As in figure 2 it is shown, a kind of data middle layer for the embodiment of the present invention 2 offer realizes system structure signal
Figure, wherein,
Memory database deployment unit 21, for deployment configuration memory database；
Corresponding relation setup unit 22, for deployment configuration memory database；
Read-write processing unit 23, for receiving the read-write requests of application service；
Internal storage data library unit 24, for after response read-write requests, according to corresponding relation, with number of files
Synchronize according to storehouse.
Further, said system also includes:
Internal storage data library unit 24 is additionally operable to start replication agent, data in document data bank is added
It is downloaded in memory database；
Read-write processing unit 23 is additionally operable to adjust the data access direction of application service, by application service to literary composition
The access of part data base is revised as the access to memory database.
Further, above-mentioned internal storage data library unit 24 is additionally operable to:
According to the read-write requests of application service, next step possible reading data content of anticipation application service, Xiang Wen
Part data base reads data content.
Further, above-mentioned internal storage data library unit 24 is additionally operable to:
Data content to application service write, whether anticipation application service can read at once, the most not with
Document data bank synchronizes；Otherwise, Tong Bu with document data bank.
In sum, embodiment of the present invention deployment configuration memory database；Set described memory database and
The corresponding relation of tables of data in document data bank；Application service accesses the proposition read-write of described memory database please
Ask；Described memory database is after responding described read-write requests, according to described corresponding relation, with described literary composition
Part data base synchronize.The scheme of the embodiment of the present invention, it is possible to increase document data bank access speed and
Efficiency, and improve Information Security, greatly improve user experience.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory and
Optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
The spirit and scope of invention.So, if these amendments of the present invention and modification belong to the claims in the present invention
And within the scope of equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a data middle layer implementation method, it is characterised in that including:
Deployment configuration memory database；
Set the corresponding relation of tables of data in described memory database and document data bank；
Application service accesses described memory database and proposes read-write requests；
Described memory database is after responding described read-write requests, according to described corresponding relation, with described literary composition
Part data base synchronize.
2. the method for claim 1, it is characterised in that described method also includes:
Described memory database is consistent with file data library structure.
3. the method for claim 1, it is characterised in that described corresponding relation includes:
Add the read-only data stored in document data bank to memory database readonly type
In cache group；
Add the data needing read-write of storage in document data bank to memory database writethrough
The cache group of global type.
4. method as claimed in claim 3, it is characterised in that described method also includes:
Start replication agent, in data are loaded into memory database in document data bank；
Adjusting the data access direction of application service, it is right application service to be revised as the access of document data bank
The access of memory database.
5. the method for claim 1, it is characterised in that described method also includes:
Described memory database according to the read-write requests of described application service, application service described in anticipation next step
Data content may be read, in described document data bank, read described data content.
6. the method for claim 1, it is characterised in that described method also includes:
The data content that described memory database writes for described application service, application service described in anticipation is
No meeting is read at once, the most not synchronize with described document data bank；Otherwise, same with described document data bank
Step.
7. a data middle layer realizes system, it is characterised in that including:
Memory database deployment unit, for deployment configuration memory database；
Corresponding relation setup unit, for deployment configuration memory database；
Read-write processing unit, for receiving the read-write requests of described application service；
Internal storage data library unit, for responding after described read-write requests, according to described corresponding relation, with
Described document data bank synchronizes.
8. system as claimed in claim 7, it is characterised in that described system also includes:
Described internal storage data library unit is additionally operable to start replication agent, data in document data bank is added
It is downloaded in memory database；
Described read-write processing unit is additionally operable to adjust the data access direction of application service, by application service to literary composition
The access of part data base is revised as the access to memory database.
9. system as claimed in claim 7, it is characterised in that described internal storage data library unit is additionally operable to:
According to the read-write requests of described application service, application service described in anticipation next step may read in data
Hold, in described document data bank, read described data content.
10. system as claimed in claim 7, it is characterised in that described internal storage data library unit is additionally operable to:
The data content that described application service is write, whether application service described in anticipation can read at once, if
It is, not synchronize with described document data bank；Otherwise, synchronize with described document data bank.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506375A (en) * | 2017-07-17 | 2017-12-22 | 上海斐讯数据通信技术有限公司 | Date storage method and device |
| CN107943846A (en) * | 2017-11-01 | 2018-04-20 | 内蒙古科电数据服务有限公司 | Data processing method, device and electronic equipment |
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