CN105893528A - Distributed data management system and data access method thereof - Google Patents
Distributed data management system and data access method thereof Download PDFInfo
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- CN105893528A CN105893528A CN201610195136.1A CN201610195136A CN105893528A CN 105893528 A CN105893528 A CN 105893528A CN 201610195136 A CN201610195136 A CN 201610195136A CN 105893528 A CN105893528 A CN 105893528A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
- G06F16/2471—Distributed queries
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F16/23—Updating
- G06F16/2358—Change logging, detection, and notification
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- Probability & Statistics with Applications (AREA)
- Fuzzy Systems (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention provides a distributed data management system and a data access method thereof. The system comprises at least two data sources. The method comprises the steps of responding to a data access request, obtaining the information of an active data source, processing the data access request based on the active data source, and sending a data access request processing result; responding to a data source updating instruction, importing new batch data into another data source not marked as active data source yet, and marking the another data source as the current active data source. By the adoption of the system, high-frequency data updating can be conducted on the premise that data access to the system is not affected, latest data information can be provided for users, and user experience is improved.
Description
Technical field
The present invention relates to database technical field, particularly relate to a kind of distributed and
Its data access method.
Background technology
Along with the development of information technology, by user group's day of distribution Web service acquisition information
Benefit expands, and the mode that user obtains information is more and more diversified, the demand to information to be obtained
More and more higher, the raising in particular for acquired information requirement of real-time is the most notable.For
Meeting user's requirement for the real-time of the information of acquisition, distributed data system needs in time
It is updated the operation such as data, deletion data and carrys out the data renewal of completion system, and then facilitate user
When accessing data system, up-to-date data message can be inquired.
When carrying out data renewal due to existing data system, it is by docking certain exogenous data source
Obtain what bigger data volume completed, cause the renewal functional module at data system to carry out data
During renewal, relatively big to data influence face, legacy data to be deleted, write new data.
Now access data system, can only read the data being updated the most lentamente, even without
Method carries out digital independent, thus cannot provide the user and stably access service.
For this problem, existing solution be by reduce data data renewal frequency or
Person tolerates the of short duration existence that cannot access service.Such as, the data renewal frequency of data system is set
It is set to once a day, and selects carry out data renewal, to reduce data the morning visit capacity is minimum
Update the impact causing access fault.But, the data that user accesses within this day are all old numbers
According to, it is impossible to meet user's requirement to new data.If improving the data renewal frequency of data system,
Then need user to tolerate the access service of instability, reduce the experience of user.
Summary of the invention
It is an object of the invention to provide a kind of distributed and data access method thereof,
To realize stably providing the user data access service.
For reaching above-mentioned purpose, embodiments of the invention provide a kind of distributed,
Described system includes service request processing means, at least two data storage device, coordinated management dress
Put and update operation device with data；Described coordinated management device is used for identifying current activity data source,
Described activity data source is one of described at least two data storage device；Described service request processes
Device is used for receiving data access request, obtains the letter in activity data source from described coordinated management device
Breath, processes described data access request based on described activity data source, and sends the visit of described data
Ask the result of request；Described data update operation device and instruct for updating in response to data source,
New batch data is imported another data storage device being currently not identified as activity data source,
And it is current work by described coordinated management device by another data storage device identification described
Dynamic data source.
Further, described coordinated management device specifically for record and updates current activity data
The mark in source；Described service request processing means is specifically for obtaining institute from described coordinated management device
State the mark in current activity data source.
Further, described coordinated management device includes zookeeper application program coordination service.
Further, described data access request includes for reading data, write data, rewriting
Data, the request of at least one deleted in data.
For reaching above-mentioned purpose, embodiments of the invention also provide for a kind of distributed
Data access method, described distributed includes at least two data source, described
Method includes: in response to data access request, obtain the information in activity data source, based on described work
Dynamic data source processes described data access request, and sends the process knot of described data access request
Really；Update instruction in response to data source, new batch data is imported and is currently not identified as activity
Another data source of data source, and be current activity data source by another data source identification described.
Further, described method also includes: record the mark in current activity data source；Described
The process of the information obtaining activity data source includes: obtain the mark in described current activity data source；
Described the process that another Data Identification described is current activity data source is included: by current work
The mark of dynamic data source is updated to the mark of another data source described.
Further, by zookeeper application program coordination service record with update current activity
The mark of data source.
Further, described data access request includes for reading data, write data, rewriting
Data, the request of at least one deleted in data.
The distributed of embodiments of the invention offer and data access method, root
According to the information in the activity data source in multiple data sources of system, process use based on activity data source
Family access request；The data of completion system are carried out by new batch data is imported inactive data source
Update, and carry out the switching in activity data source, may be used for alternately data and update.This distribution
The stable system performance of formula data management system, can carry out upper frequency data update, for
Family provides up-to-date data message, improves the experience of user.
Accompanying drawing explanation
Fig. 1 is that the data of the distributed illustrating exemplary embodiment of the present one are visited
Ask the flow chart of method；
Fig. 2 is that the data of the distributed illustrating exemplary embodiment of the present two are visited
Ask the flow chart of request processing method；
Fig. 3 be the data of the distributed illustrating exemplary embodiment of the present two more
The flow chart of new method；
Fig. 4 is the structural frames of the distributed illustrating exemplary embodiment of the present three
Figure.
Detailed description of the invention
The basic conception of the present invention is to provide a kind of distributed and data access side thereof
Method, by the information in the activity data source in multiple data sources of acquisition system, based on activity data
User access request is processed by source；And, new batch data is imported inactive data source
The data carrying out completion system update, and carry out the switching in activity data source.Live thus, it is possible to utilize
Dynamic data source and inactive data source alternately process and data of system to data access request
Update, and then realization do not affect user and system carries out the data renewal of completion system during data access,
Ensure the stability of systematic function.
Describe the exemplary embodiment of the present invention below in conjunction with the accompanying drawings in detail.
Embodiment one
Fig. 1 is that the data of the distributed illustrating exemplary embodiment of the present one are visited
Ask the flow chart of method.Embodiment can be performed by distributed as shown in Figure 3
The data access method of the distributed of.
With reference to Fig. 1, in step S110, in response to data access request, obtain activity data source
Information, processes data access request based on activity data source, and sends the place of data access request
Reason result.
In the present embodiment, distributed includes at least two number for storing data
According to source.This at least two data source is relatively independent, and only one of which is as activity data source.Business
Server responds the data access request of user based on the data that activity data source stores, such as, look into
Ask the movie playback message etc. of movie theatre.Background service or management program can be passed through to inactive data source
It is managed and operates.These data sources are independent of each other mutually, make activity data source permissible
Fast and stably for the data access request that data volume is less process, effectively ensure be
The stability of system performance.
This distributed, after the data access request receiving user, obtains and lives
The information of dynamic data source.Wherein, the information in activity data source can include that data source is activity data
Source or the information in inactive data source, the specifying information such as information of data source numbering.Distributed data
The service request processing means being responsible for processing this data access request in management system can directly read
The information in activity data source, and then may determine that current activity data source.
After getting the information in current activity data source, based on this data source for user's
Data access request, reading or the operation etc. that carry out data process, and result are sent to
Going out the object of data access request, reading or the operation etc. that make user complete data are asked.Owing to working as
Front activity data source is served only for processing data access request, and data processing amount is less, and not by it
The impact in its inactive data source, so the data that activity data source can process user quickly are visited
Ask request, it is not necessary to the wait result of user's long period, improve the experience of user.
In step S120, update instruction in response to data source, new batch data is imported the most not
It is identified as another data source in activity data source, and is current work by another data source identification
Dynamic data source.
Need to import substantial amounts of new data owing to the data of system update, the data source of storage new data
The substantial amounts of data such as deletion having needed the write of new data, legacy data process, now, if
Process the access request of user based on this data source, then can only process the most slowly, even
Cannot normal process.Therefore, select inactive data source to carry out the importing of new batch data, keep away
Exempt to affect activity data source and process the efficiency of data access request.
Specifically, after system receives data source renewal instruction, from multiple data source capability not
It is identified as an inactive data source in activity data source to import new batch data.When at this
(or inactive data source has also needed to original to complete the storage of new data in inactive data source
The deletion of data) after, this inactive data source can be designated current activity data source.
Current New activity data source has new data, can be that the data access request of user provides new
Data message, processes the data access request of user, meets user couple based on new data message
The requirement of real-time of the data message obtained.
Meanwhile, the mark in former activity data source is labeled as inactive data source by system.Predetermined
After time, when system receives data source renewal instruction again, can be based on this inactive number
The data carrying out system according to source update.Thus, system is used for alternately by the switching in activity data source
Data renewal within completion system and the process to data access request.Due to activity data source
Switching only relate to activity data source mark amendment, swift to operate, neither affect system stability,
Ensure that user can carry out data access quickly；Count in a large number with can carrying out again upper frequency
According to renewal, make user access up-to-date data.
The data access method of the distributed that embodiments of the invention provide, utilizes
Current activity data source processes the data access request of user, utilizes the storage of inactive data source new
Data carry out the data of internal system and update, by switching activity data source and inactive data source
Alternately the data of the process of data access request and system are updated, it is ensured that systematic function steady
Qualitative, and make system can carry out more newly arriving of mass data to provide the user up-to-date access data.
Embodiment two
Fig. 2 and Fig. 3 is shown respectively the data of the distributed of the embodiment of the present invention two
Access request processing method and data-updating method, be equivalent to the distributed of embodiment illustrated in fig. 1 one
A kind of specific implementation of the data access method of data management system, related content can be found in reality
Execute the related content of example one.
With reference to Fig. 2, in step S210, obtain the mark in activity data source.
The mark obtaining activity data source is equivalent to obtain in abovementioned steps S110 activity data source
Information, the activity data source in the multiple activity data sources determining system and inactive data source.
Perform step S210 for convenience, need the mark in the current activity data source of record system.
In step S220, it is judged that activity data source identify whether exist.
If getting the mark in activity data source, the most above-mentioned being judged as NO, performing step S230.
In step S230, the mark in activity data source is set.
When system starts first, multiple data sources of system need to set activity data source, permissible
Optional data source storage external data is as activity data source, and by the mark in activity data source
It is set to the identification information of this data source.
If not getting the mark in activity data source, the most above-mentioned being judged as YES, performing step S240.
In step S240, process data access request based on activity data source.
In the present embodiment, the mark in activity data source can be obtained by performing step S210, and
Be may determine that the mark in activity data source by step S230, all may determine that the multiple data source of system
In activity data source.Now, process the data access request of user based on this activity data source,
User is made to carry out data access the most quickly.
With reference to Fig. 3, in step S310, obtain the mark in activity data source.
In step S320, it is judged that activity data source identify whether exist.
In step S330, the mark in activity data source is set.Step S310, step S320 and step
Rapid S330 is identical with the content of abovementioned steps S210, step S220 and step S230 respectively, can
See the corresponding contents of step S210, step S220 and step S230.
In step S340, inactive data source is set for importing data source.
In the present embodiment, the mark in activity data source can be obtained by performing step S310, and
Be may determine that the mark in activity data source by step S330, all may determine that the multiple data source of system
In activity data source.Now, non-based on any one outside activity data source in multiple data sources
Activity data source can carry out the data of internal system and update.The non-of data renewal is carried out determining
After activity data source, it is set to this inactive data import data source, outside import system
Portion's data complete data and update.
In step S350, import new data.
In time importing data source importing new data, directly new data can be imported by its exterior.
Owing to multiple data sources alternately data of the distributed of embodiment update, many
The number of times that individual data source carries out data renewal is different, and the data volume that the most multiple data sources comprise is different.
If the data volume comprised in importing data source is not enough to provide the user data access, then can cause use
User data access request cannot be processed.For this problem, can be by data source will be imported
Between the two secondary data renewals of itself, the external data of import system all stores importing data source,
So that the data volume within importing data source enough processes the data access request of user.
In step S360, update the mark in activity data source.
After importing data source completes the storage of new data, this importing data source can be set to
The data source of current active, for processing the data access request of user, makes user access up-to-date number
According to, and it is read out data, write data, rewrite data, deletion data etc. based on latest data
Operation.
Meanwhile, the mark in activity data source is updated, in order to when system carries out data renewal again, will
The new data of its exterior imports other inactive data source, and then realizes by multiple data sources alternately
More new data carrys out the data within completion system and updates.Specifically, can be applied by zookeeper
Program Coordination service records and updates the mark in current activity data source.
The data access method of the distributed of the embodiment of the present invention, shown in Fig. 1
On the basis of embodiment, further illustrate the number of the processing method to data access request and system
According to update method so that system can stably provide the user data access request, and simultaneously can
To carry out data renewal, user is made to access latest data.
Embodiment three
Fig. 4 is the structural frames of the distributed illustrating exemplary embodiment of the present three
Figure, this system can be used for performing previous embodiment one or the distributed of embodiment two
Access method.
With reference to Fig. 4, this system include at least two data storage device (Fig. 4 is two, the
One data storage device 421 and the second data storage device 422), service request processing means 430,
Coordinated management device 440 and data update operation device 410.
Wherein, coordinated management device 440 is for identifying current activity data source, activity data source
For one of at least two data storage device；Service request processing means 430 is used for receiving data and visits
Ask request, obtain the information in activity data source from coordinated management device 440, based on activity data source
Process data access request, and send the result of data access request；Data update operation
New batch data, for updating instruction in response to data source, is imported and is not currently marked by device 410
Know another data storage device for activity data source, and will by coordinated management device 440
Another data storage device identification is current activity data source.
In the present embodiment, two data storage devices as activity data source and inactive data source,
Store the data of internal system and provide a user with data access service.Coordinated management device 440
Utilize and identify activity data source so that service request processing means 430 can be according to activity data
The mark in source determines activity data source, and then based on activity data source processes user data access request,
Make user can carry out data access quickly.Data are more like operating device 410 from according to coordinating pipe
Reason device 440 obtains the information in activity data source, determines inactive data source, by new lot number
Update according to the data imported within this inactive data source completion system, it is ensured that stablizing of systematic function
Property.When system completes data renewal, update activity data source by coordinated management device 440
Mark, to facilitate system again to carry out system data renewal.
Further, coordinated management device 440 specifically for record and updates current activity data
The mark in source；Service request processing means 430 is worked as specifically for obtaining from coordinated management device 440
The mark in front activity data source.
Further, coordinated management device 440 includes zookeeper application program coordination service.
Further, data access request include for read data, write data, rewrite data,
Delete the request of at least one in data.
The distributed of the embodiment of the present invention, utilizes two data storage device conducts
Data source, alternately storage new data carries out data renewal with ensureing system stability；And utilize alive
Dynamic data source performs the process to data access request so that user can carry out data quickly
Access, improve the experience of user.
Embodiment four
The present embodiment be utilize the distributed shown in Fig. 4 as film count data storehouse,
The film ticket carrying out film ticket market sells the concrete operations mode of project, at film ticket base
While the high frequency time of plinth data updates, utilize the stability of systematic function to ensure film count data
Express query.
Specifically, original film sheet data are imported film count data storehouse (DDM system
System), and store the first data storage device 421, now, coordinated management device 440 is by the
One data storage device 421 is designated activity data source, for carrying to foreground movie tickets services system
Inquiry service for film count data；Second data storage device 422 is inactive data source.
When arriving the renewal time preset, film count data storehouse carries out film count data renewal, from association
Managing device 440 is adjusted to directly read the mark in activity data source, by the first data storage device 421
It is defined as activity data source.Data update operation device 410 and are stored by up-to-date film count data
Second data storage device 422, and by coordinated management device 440 by the second data storage device 422
It is designated current activity data source, for the film up-to-date to the offer of foreground movie tickets services system
The inquiry service of ticket data；Meanwhile, coordinated management device 440 is by the first data storage device 421
It is designated inactive data source, for storing up-to-date film when film count data storehouse updates again
Ticket data.
Thus, the first data storage device 421 and the second data storage device 422 alternately store
New cinema ticket data, the high frequency time completing film count data updates, and ensures film count data storehouse
Stability.Film count data storehouse constantly carries out stable renewal, makes foreground movie tickets services system permissible
Inquire up-to-date film count data, make ticketing project stably carry out.
It may be noted that according to the needs implemented, all parts/step described in this application can be torn open
It is divided into more components/steps, it is possible to by two or more components/steps or the part of components/steps
The components/steps that operational group synthesis is new, to realize the purpose of the present invention.
Above-mentioned the method according to the invention can realize in hardware, firmware, or is implemented as depositing
Store up the software in record medium (such as CD ROM, RAM, floppy disk, hard disk or magneto-optic disk)
Or computer code, or be implemented through original storage that network downloads at remotely record medium or
In nonvolatile machine readable media and the computer code in local recording medium will be stored in, from
And method described here can be stored in use general purpose computer, application specific processor or able to programme
Or the such software processes on the record medium of specialized hardware (such as ASIC or FPGA).Can
To understand, computer, processor, microprocessor controller or programmable hardware include storing or
Receive software or the storage assembly (such as, RAM, ROM, flash memory etc.) of computer code, when
When described software or computer code are by computer, processor or hardware access and execution, it is achieved
This processing method described.Additionally, when general purpose computer accesses for realizing the process being shown in which
Code time, general purpose computer is converted to for performing the process being shown in which by the execution of code
Special-purpose computer.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not
Be confined to this, any those familiar with the art in the technical scope that the invention discloses,
Change can be readily occurred in or replace, all should contain within protection scope of the present invention.Therefore, originally
The protection domain of invention should be as the criterion with described scope of the claims.
Claims (8)
1. a distributed, it is characterised in that described system includes service request
Processing means, at least two data storage device, coordinated management device and data update operation device；
Described coordinated management device is for identifying current activity data source, and described activity data source is
One of described at least two data storage device；
Described service request processing means is used for receiving data access request, from described coordinated management dress
Put the information obtaining activity data source, process described data access request based on described activity data source,
And send the result of described data access request；
Described data update operation device and instruct, by new lot number for updating in response to data source
According to importing another data storage device being currently not identified as activity data source, and pass through institute
Stating coordinated management device is current activity data source by another data storage device identification described.
System the most according to claim 1, it is characterised in that described coordinated management device has
Body is for recording and update the mark in current activity data source；
Described service request processing means is specifically for described currently from the acquisition of described coordinated management device
The mark in activity data source.
System the most according to claim 2, it is characterised in that described coordinated management device bag
Include zookeeper application program coordination service.
4. according to the system according to any one of claims 1 to 3, it is characterised in that described data
Access request include for read data, write data, rewrite data, deletion data at least
The request of one.
5. a data access method for distributed, described DDM
System includes at least two data source, it is characterised in that described method includes:
In response to data access request, obtain the information in activity data source, based on described activity data
Source processes described data access request, and sends the result of described data access request；
Update instruction in response to data source, new batch data is imported and is currently not identified as activity
Another data source of data source, and be current activity data source by another data source identification described.
Method the most according to claim 5, it is characterised in that described method also includes: note
Record the mark in current activity data source；
The process of the information in described acquisition activity data source includes: obtain described current activity data
The mark in source；
Described the process that another Data Identification described is current activity data source is included: will be current
The mark in activity data source be updated to the mark of another data source described.
Method the most according to claim 6, it is characterised in that applied by zookeeper
Program Coordination service log and the mark updating current activity data source.
8. according to the method according to any one of claim 5～7, it is characterised in that described data
Access request include for read data, write data, rewrite data, deletion data at least
The request of one.
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Application publication date: 20160824 |
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