CN107332918A - A kind of high in the clouds local file synchronization realizing method and system - Google Patents
A kind of high in the clouds local file synchronization realizing method and system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- G—PHYSICS
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- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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Abstract
A kind of high in the clouds local file synchronization realizing method and system, belong to file synchronization technical field.The inventive method includes step S1, and applications client, which is sent, specifies synchronization folder listed files information to backstage to be compared with the listed files information uploaded in advance, will upload local data base that applications client is stored in background information；Step S2, obtain local file list information and be compared with local data base list information, if the local data base list information does not contain the local file list information, the differential file information obtained more afterwards then is uploaded into high in the clouds to update, if the local data base list information contains the fileinfo not having in the local file list information, the file is then deleted beyond the clouds, if the local data base list information is identical with the local file list information, any simultaneously operating is not done in high in the clouds.
Description
Technical field
The present invention relates to file synchronization technical field, more particularly to a kind of high in the clouds-local file synchronization realizing method and it is
System.
Background technology
Current internet services are extremely popularized, high in the clouds storage service fast development, no matter personal or enterprise, be that cloud is deposited
The Red sea user of storage business.It is a kind of locally to realize, efficiently locally need synchronous documents comparative approach to be brought greatly to user
It is convenient.
Cloud storage refers to by functions such as cluster application, grid or distributed file systems, by network it is various not
The storage device of same type gathers collaborative work by application software, common externally to provide data storage and Operational Visit work(
One system of energy.Existing online cloud storage system constitutes structure as shown in figure 1, by user terminal and cloud storage service device two parts
Composition；Wherein, user terminal, which is used to send, uploads data, deletes the service requests such as data, shared data；Communication module is used to transmit
With parsing data and service request；Cloud storage service device is used to receive and handle the service request, in cloud storage service device
User management module is used for managing user information and user data etc., and storage engines are responsible for the storage and maintenance of user data,
Storage medium is used for the physical location for recording user data storage.
In the prior art, when user terminal uploads file data to cloud storage service device in advance, user terminal first calculates to be uploaded
The digest value of file data, communication module transmits the digest value to cloud storage service device, and cloud storage service device will be complete by retrieval
Whether office makes a summary dictionary to determine in cloud storage service device with the presence of the digest value.So, user terminal often uploads a digest value
Give cloud storage service device, cloud storage service device is accomplished by deploying retrieval once to global dictionary of making a summary, and global summary dictionary
In contain substantial amounts of data, often retrieve once, all will expend the substantial amounts of computing resource of cloud storage service device.
Patent of invention CN106131123A discloses the remote resource synchronous method and system of a kind of three-tier architecture, and its is specific
Disclose and local directory is traveled through according to cloud server, generation includes the listing file of All Files synchronizing information；Serviced under line
Device obtains newest listing file from cloud server and contrasted with local list file, generation delete list and download list；Under line
Server carries out delete processing according to the delete list to local file；Under line server according to the download list from high in the clouds
Server downloads corresponding document；The broadcasting that playback terminal is obtained by LAN in the listing file under line after server update is provided
Source file catalogue, and playing resource is obtained according to the download address of playing resource file directory.Easily and efficiently it can be taken from cloud
The file of business device synchronized update is to playback terminal, and still, the remote resource synchronous method and system of three-tier architecture have only completed one
Secondary data compare, and scores more than normal calculating processing is still completed beyond the clouds, high to network degree of dependence, it is impossible to fundamentally to solve high in the clouds
Service load.
The content of the invention
The problem of present invention exists for prior art, it is proposed that reduce and cloud service load is solved to network degree of dependence
A kind of high in the clouds-local file synchronization realizing method and system.
The present invention uses two step file comparison steps：First step applications client after application program installation, which is sent, needs synchronization
Folder file list information is to backstage, and backstage newly uploads information and the list information uploaded in advance, by without synchronization
Information returns to applications client and will upload in background information to feed back the number that tabular form is stored in applications client
According to storehouse.Second step is compared, if institute in applications client by local file list information and with local data base list information
State local data base list information and do not contain the local file list information, then by the differential file information that will be obtained more afterwards
It is uploaded to high in the clouds renewal；If the local data base list information contains the file letter not having in the local file list information
Breath, then delete the file beyond the clouds；If the local data base list information and the complete phase of local file list information
Together, then any simultaneously operating is not done in high in the clouds.By obtaining different information in local comparison document list, backstage is fed back to, then send out
Deliver to high in the clouds and synchronize operation, simple and quick can realize that local differential file is searched, reduce network and rely on, reduce backstage with
And the service load in high in the clouds.
The technical scheme is that：
A kind of high in the clouds-local file synchronization realizing method, comprises the following steps：
Step S1, applications client, which is sent, specifies synchronization folder listed files information to backstage and the file uploaded in advance
List information compares, and will upload local data base that applications client is stored in background information；
Step S2, obtains local file list information and is compared and carries out beyond the clouds with local data base list information
Simultaneously operating.
As a preference of the present invention, the step S1 also includes scanning step S11：
Scanning specifies synchronization folder listed files and the listed files uploaded in advance and calculates the specified mesh
Record listed files information checking code and the listed files information checking code uploaded in advance.
As a preference of the present invention, the step S1 also includes the first feedback step S12：
The specified synchronization folder listed files information and the listed files information uploaded in advance relatively after, by nothing
Synchronous information is needed to return to applications client in the form of the first feedback list.
As a preference of the present invention, also including the second feedback step S13 in the step S1：
Synchronous documents list information is stored in application client with the second feedback tabular form the need for being obtained after relatively
The database at end.
As a preference of the present invention, the step S2 is specially：
It is compared by the local file list information and with the local data base list information；
If the local data base list information does not contain the local file list information, by the difference obtained more afterwards
Different fileinfo is uploaded to high in the clouds renewal；
If the local data base list information contains the fileinfo not having in the local file list information,
Delete the file in high in the clouds.
A kind of high in the clouds-local file synchronization system, including：
First comparison module, for the specified synchronization folder listed files information that is newly uploaded on backstage and in advance
The listed files information of biography；
Memory module, according to the comparative result of the first comparison module, will upload and has been stored in application in background information
The local data base of client；
Second comparison module, in the applications client local file list information and the local data base
List information；
Synchronization module, operation is synchronized according to the comparative result of the second comparison module beyond the clouds.
As a preference of the present invention, in first comparison module also include the first feedback unit, for will relatively after nothing
Synchronous information is needed to return to the applications client with the first feedback tabular form.
As a preference of the present invention, in first comparison module also include the second feedback unit, for will after need
Synchronous information is stored in the database of the applications client with the second feedback tabular form..
As a preference of the present invention, second comparison module also includes updating block, for the local file list
Information and the local data base list information update the local data base list information after being compared and not contained beyond the clouds
The differential file of the local file list information.
As a preference of the present invention, second comparison module is also comprising unit is deleted, for the local file list
Information and the local data base list information delete what the local data base list information contained beyond the clouds after being compared
And the differential file that the local file list information is not contained.
Beneficial effect：
1st, by obtaining different information in comparison document list twice, backstage is fed back to, retransmits to high in the clouds and synchronizes
Operation, simple and quick can realize that local differential file is searched, and reduce network and rely on, reduce the workload in backstage and high in the clouds,
Improve cloud service stability, it is ensured that the safety of application, the safety of data.
2nd, fileinfo is obtained by scanning, including filename and check code are Message Digest 5 (MD5), pass through file
Name information and MD5 are compared, and MD5 carries encryption function, it is ensured that the correctness and stability of Documents Comparison.
Brief description of the drawings
Fig. 1 is a kind of general flow chart of high in the clouds-local file synchronization realizing method of the invention；
Fig. 2 is step S1 of the present invention particular flow sheet；
Fig. 3 is the general diagram that a kind of high in the clouds-local file of the invention synchronously realizes system；
Fig. 4 is the block diagram of the first comparison module of the invention；
Fig. 5 is the block diagram of the second comparison module of the invention.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
The upload stored beyond the clouds under current regular situation, the synchronizing process for updating and deleting generally obtain this first
Ground file-related information (such as last modification time of file name, file, file size information) is simultaneously stored, and user, which specifies, to be sent
Synchronous documents list, is locally generated synchronous documents list and sends to backstage, will obtain local file relevant information send to
Background service is compared, and according to comparative result to determine the increase of file, is deleted and is updated, such as patent of invention
CN106131123A discloses the remote resource synchronous method and system of a kind of three-tier architecture, wherein having carried out once comparing for high in the clouds
Compared with process：Cloud server travels through local directory, and generation includes the listing file of All Files synchronizing information；Under line server from
Cloud server obtains newest listing file and contrasted with local list file, generation delete list and download list；Serviced under line
Device carries out delete processing according to the delete list to local file.But based under the synchronous method of traditional high in the clouds, it is to be ensured that high in the clouds
It is identical with local side listed files information, it is necessary to the comparison of file, and progress file synchronization operation beyond the clouds are carried out on backstage,
So still suffer from huge calculating pressure for backstage, increase back-end data treating capacity, during also extremely rely on network, one
Denier network goes wrong, and high in the clouds cannot reach unanimously with local mapping relations, it is impossible to realize that high in the clouds is synchronous with local, make
The permanent loss of data is even resulted in into shortage of data.
In the present invention, design has carried out Documents Comparison twice, and after completing to compare for the first time on backstage, and following the
Secondary file is relatively arranged at local side progress, alleviates backstage pressure, reduces the dependence to network, improve data same
The stability and security of step.
It is the specific embodiment of the invention below.
Embodiment 1
Such as Fig. 1-2, a kind of high in the clouds-local file synchronization realizing method of the invention comprises the following steps：
Step S1, applications client, which is sent, specifies synchronization folder listed files information to backstage and the file uploaded in advance
List information compares, and will upload local data base that applications client is stored in background information.
Scanning specifies synchronization folder listed files and the listed files uploaded in advance and calculates the specified mesh
Record listed files information checking code and the listed files information checking code uploaded in advance.
The good high in the clouds storage applications client of user installation, edits specified synchronization folder listed files and sends to application visitor
Family end, specified synchronization folder listed files that applications client is sent to user and the listed files uploaded in advance are swept
Retouch, filename is obtained first, for example, obtain and specify synchronization folder listed files to include " big data ", " logical thinking ", " Xiao Wang
The file name information of the file such as son ", " secret ", " Wilde, Oscar ", " laugh at and forget record ", obtains the listed files uploaded in advance comprising " big
The file name information of the file such as data ", " little prince ", " laugh at and forget record ".Overall situation summary dictionary is divided into difference by cloud storage service device
The condition code dictionary of data type, to the data for specifying synchronization folder listed files and the listed files uploaded in advance to calculate
The digest value of file carries out type parsing, obtains MD5 numerical value.
The step S1 also includes feedback step S12：
The specified synchronization folder listed files information and the listed files information uploaded in advance relatively after, by nothing
Synchronous information is needed to return to applications client in the form of the first feedback list.
Compare the specified synchronization folder listed files information and the listed files information uploaded in advance, pass through text
Part name information relatively show that the file such as file entitled " big data ", " little prince ", " laugh at and forget record " is identical, and MD5 values are also identical, belong to
Identical file, it is not necessary to which it is synchronous to carry out high in the clouds, then compare on backstage generation include file name information for " big data ",
The files such as " little prince ", " laugh at forget record " do not need synchronous documents list, first is formed after encapsulation feed back list, and anti-by first
Feedback list is back to applications client.
Also include in the step S1：
Synchronous documents list information is stored in application client with the second feedback tabular form the need for being obtained after relatively
The database at end.
By sweeping to the specified synchronization folder listed files information and the listed files information uploaded in advance
After retouching, calculate and comparing, obtain without synchronous documents information, and the form of the first feedback list returns to applications client,
Remaining file name information is that the packing of the files such as " big data ", " logical thinking ", " secret " is packaged into the second feedback list, and will
It is stored in the database of applications client.
Further, using the check code that rear MD5 is calculation document information, using the information of random length as input value, and
" finger print information " or " message digest " value of 128 bit lengths is converted into represent this input value, and with the value after conversion
As a result, simultaneously can to calculate file be encrypted, improve to a certain extent fileinfo security and
Steadiness.
Step S2, obtains local file list information and is compared and carries out beyond the clouds with local data base list information
Simultaneously operating.
Further, step S1 accesses high in the clouds, scans the specified synchronization folder listed files and described uploads in advance
Listed files, obtains the file name information and the listed files uploaded in advance of the specified synchronization folder listed files
File name information, calculates the MD5 codes and the listed files uploaded in advance for obtaining the specified synchronization folder listed files
MD5 values, be compared in rear lift, comparative result fed back to local in the form of the first feedback list and the second feedback list
Database, is that ensuing second step file data relatively lays the foundation, as long as making second step file data compare in local side
Carry out, it is not necessary to access backstage and high in the clouds, greatly reduce the pressure of backstage computing, reduce the need to cloud network
Ask.
Obtain local file list file name information and with local data base listing file name information, for example：Obtain described
Local file list includes the files such as " big data ", " logical thinking ", " little prince ", " secret ", " Wilde, Oscar ", " laugh at and forget record "
The file of name, obtains the local data base list and includes " little prince ", " secret ", " Wilde, Oscar ", " laugh at and forget record ", " black fine horse
The file of the filename such as horse ", " free country ".
Further, the scanning meter to the local file list and the local data base list is also included during this
Step is calculated, the MD5 values of the local file list and the MD5 values of the local data base list is calculated.
Next the comparison based on local side is carried out according to file name information and MD5 to feed back.
The step S2 is specially：
It is compared by the local file list information and with the local data base list information.
If the local data base list information does not contain the local file list information, by the difference obtained more afterwards
Different fileinfo is uploaded to high in the clouds renewal.
For example compare and draw in the local data base list not comprising file entitled " big data ", the text of " logical thinking "
Part, then feed back to the local data base by " big data ", " logical thinking " and these files be uploaded into high in the clouds.
Further, for example compare draw in the local data base list contain and the local data base listing file name
The file such as identical " little prince ", " secret ", " Wilde, Oscar ", " laugh at and forget record ", and the MD5 values discovery filename Jing Guo documents
For in value and the local data base list of the file in the local file list of " little prince " and " Wilde, Oscar "
Value it is different, then the file of file entitled " little prince " and " Wilde, Oscar " is fed back into the local data base, by these files
Upload is updated to high in the clouds and is beyond the clouds deleted the file of original same file name.
If the local data base list information contains the fileinfo not having in the local file list information,
Delete the file in high in the clouds.
Show that the file of file entitled " black courser " and " free country " is present in the local file list for example, comparing
In, but be not present in the local data base list, then the file of file entitled " black courser " and " free country " is existed
Directly delete in high in the clouds.
Further, step S2 relatively in, compare the local file list information and with the local data base arrange
The discrepancy of table information, and feedback each time will all be set up new feedback list and be come to the local data base in step s 2
List is refreshed.
Further, actively operating upload is specified to need the state of synchronous file in applications client without user
Under, to more all being completed in local side for file, then fed back, and corresponding simultaneously operating is carried out to high in the clouds.
Embodiment 2
Such as Fig. 3-5, a kind of high in the clouds-local file synchronization system of the invention, including：
First comparison module, the specified synchronization folder listed files information newly uploaded and the text uploaded in advance
Part list information.
Also include receiving module before first comparison module, sent for the background application client and specify same
Step file presss from both sides listed files information.
Memory module, according to the comparative result of the first comparison module, will upload and has been stored in application in background information
The local data base of client.
The good high in the clouds storage applications client of user installation, edits specified synchronization folder listed files and sends to application visitor
Family end, applications client receives the specified synchronization folder listed files of user's transmission and sent to high in the clouds.Beyond the clouds to described
Specify synchronization folder listed files and the listed files uploaded in advance to be scanned, filename is obtained first, then calculate
Obtain MD5 values.
Feedback unit is also included in first comparison module, for that will compare after returned without synchronous information should be described
Applications client has simultaneously been uploaded described in background information to feed back the sheet that tabular form is stored in the applications client
Ground database.
Further, to specifying synchronization folder listed files information and the listed files information uploaded in advance to be compared,
Analyze the file that the listed files uploaded in advance that the specified synchronization folder listed files contains and described also contains
Information, feeds back to local data base into listed files that need not be synchronous by this Information encapsulation and preserves.
Further, the remaining fileinfo after comparing in addition to same file information is packaged into the file that need to be synchronized
List feeds back to database and preserved.
Further, the first comparison module is compared on backstage, and result is fed back to local number in the form of feedback form
Preserved according to storehouse.
Second comparison module, in the applications client local file list information and the local data base
List information.
Synchronization module, operation is synchronized according to the comparative result of the second comparison module beyond the clouds.
Further, the first comparison module accesses high in the clouds, scans the specified synchronization folder listed files and described advance
The listed files of upload, calculates acquisition MD5 values and is compared in rear lift, comparative result is fed back into this in the form of feeding back list
Ground database, as long as making the second comparison module be carried out in local side, it is not necessary to backstage and high in the clouds are accessed, after greatly reducing
The pressure of platform computing, reduces the demand to cloud network.
Second comparison module also includes updating block, for the local file list information and the local data
Storehouse list information updates the local data base list information and does not contain the local file list letter beyond the clouds after being compared
The differential file of breath..
In updating block, the comparison of advanced row filename, if without the local file in the local data base list
The file included in list, then be uploaded to high in the clouds by this class file.
In updating block, then the comparison of MD5 values is carried out, if file in the local data base list and described local
The File name included in listed files is identical, compares its MD5 value, if MD5 values are identical, is operated without updating；If MD5
Value is different, then deletes the file in the local file list beyond the clouds and upload the file in the local data base list.
Further, in updating block, new feedback list will be more all generated every time and feeds back to local data base.
Second comparison module is also comprising unit is deleted, for the local file list information and the local data
Storehouse list information deletes local file list that the local data base list information contains and described beyond the clouds after being compared
Information does not contain differential file.
Embodiment 3
It is with the difference of embodiment 1, in this embodiment, file scan is calculated using Secure Hash Algorithm (SHA1),
Compared safer with MD5, precision is higher, SHA1 can produce the eap-message digest of one 160, and MD5 is then generation one
128 hashed values.
Embodiment 4
It is with the difference of embodiment 2, in this embodiment, file scan is calculated and uses SHA1.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of high in the clouds-local file synchronization realizing method, it is characterised in that comprise the following steps：
Step S1, applications client, which is sent, specifies synchronization folder listed files information to backstage and the listed files uploaded in advance
Information compares, and will upload local data base that applications client is stored in background information；
Step S2, obtains local file list information and is compared and synchronizes beyond the clouds with local data base list information
Operation.
2. a kind of high in the clouds-local file synchronization realizing method according to claim 1, it is characterised in that the step S1
Also include scanning step S11：
Scanning specifies synchronization folder listed files and the listed files uploaded in advance and calculates the assigned catalogue text
Part list information check code and the listed files information checking code uploaded in advance.
3. a kind of high in the clouds-local file synchronization realizing method according to claim 1, it is characterised in that the step S1
Also include the first feedback step S12：
The specified synchronization folder listed files information and the listed files information uploaded in advance relatively after, need not be together
The information of step returns to applications client in the form of the first feedback list.
4. a kind of high in the clouds-local file synchronization realizing method according to claim 1, it is characterised in that the step S1
In also include the second feedback step S13：
Synchronous documents list information is stored in applications client with the second feedback tabular form the need for being obtained after relatively
Database.
5. a kind of high in the clouds-local file synchronization realizing method according to claim 1, it is characterised in that the step S2
Specially：
It is compared by the local file list information and with the local data base list information；
If the local data base list information does not contain the local file list information, by the difference obtained more afterwards text
Part information is uploaded to high in the clouds renewal；
If the local data base list information contains the fileinfo not having in the local file list information, beyond the clouds
Delete the file.
6. a kind of high in the clouds-local file synchronization system, it is characterised in that including：
First comparison module, is uploaded for the specified synchronization folder listed files information that is newly uploaded on backstage and in advance
Listed files information；
Memory module, according to the comparative result of the first comparison module, will upload and has been stored in application client in background information
The local data base at end；
Second comparison module, in the applications client local file list information and the local data base list
Information；
Synchronization module, operation is synchronized according to the comparative result of the second comparison module beyond the clouds.
7. a kind of high in the clouds-local file synchronization system according to claim 6, it is characterised in that described first compares mould
The first feedback unit is also included in block, for that will compare after without synchronous information with the first feedback tabular form return it is described should
Use client.
8. a kind of high in the clouds-local file synchronization system according to claim 7, it is characterised in that described first compares mould
The second feedback unit is also included in block, described answer is stored in for synchronous information will to be needed to feed back tabular form with second more afterwards
With the database of client.
9. a kind of high in the clouds-local file synchronization system according to claim 6, it is characterised in that described second compares mould
Block also include updating block, after being compared for the local file list information and the local data base list information
High in the clouds updates the differential file that the local data base list information does not contain the local file list information.
10. a kind of high in the clouds-local file synchronization system according to claim 6, it is characterised in that two comparison module
Also comprising unit is deleted, in cloud after being compared for the local file list information and the local data base list information
Delete the differential file that local file list information that the local data base list information contains and described is not contained in end.
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| CN111400381A (en) * | 2020-02-28 | 2020-07-10 | 北京致医健康信息技术有限公司 | Data storage method and device, computer equipment and storage medium |
| CN111400381B (en) * | 2020-02-28 | 2024-05-10 | 北京致医健康信息技术有限公司 | Data storage method, device, computer equipment and storage medium |
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| CN111797065A (en) * | 2020-05-26 | 2020-10-20 | 武汉长杰信息科技有限公司 | Cloud storage technology-based cloud synchronization method and system |
| CN112306967A (en) * | 2020-10-30 | 2021-02-02 | 深圳市小喵科技有限公司 | File uploading method and device and computer readable storage medium |
| WO2022100136A1 (en) * | 2020-11-13 | 2022-05-19 | 深圳市前海手绘科技文化有限公司 | Animation draft online storage optimization method and device |
| CN113590618A (en) * | 2021-07-19 | 2021-11-02 | 上海淇玥信息技术有限公司 | Zero-access-volume page resource cleaning method and device and electronic equipment |
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| CN115391465A (en) * | 2022-10-27 | 2022-11-25 | 天津睿智诚科技发展有限公司 | Multi-terminal data synchronization method, system and device based on signal clustering judgment |
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