CN104156376B - A kind of storage method of file, device and server - Google Patents
A kind of storage method of file, device and server Download PDFInfo
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- CN104156376B CN104156376B CN201310180414.2A CN201310180414A CN104156376B CN 104156376 B CN104156376 B CN 104156376B CN 201310180414 A CN201310180414 A CN 201310180414A CN 104156376 B CN104156376 B CN 104156376B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000013507 mapping Methods 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/1737—Details of further file system functions for reducing power consumption or coping with limited storage space, e.g. in mobile devices
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention is suitable for internet communication technical field, provides storage method, device and the server of a kind of file, which comprises receives and sends the file that client uploads；The digest value of the file is calculated according to presupposed information digest algorithm；It whether there is the mapping relations of the digest value and file index in file index table；If the mapping relations of the digest value and file index are not present in File Index Table, send the file to file server and stored, and receives the file index for the file that the file server generates.The present invention realizes same file on server and only stores portion, improves the effective rate of utilization of the memory space of server.
Description
Technical field
The invention belongs to internet communication technical field more particularly to a kind of storage methods of file, device and server.
Background technique
Currently, the user of immediate communication tool is more and more, user is higher and higher using the frequency of immediate communication tool, i.e.,
When communication server need the information that stores also more and more, such as when some user sends out a picture inside group, this
If a crowd of user thinks that this picture is very interesting, this picture will may be dealt into another group of the insides, in addition
The user of one group can may also forward, and constantly forward identical picture, the file storage side of existing server for this
Method is that user sends out which type of picture file just deposits which type of picture file, by rough Statistics, is only schemed in instant communication group
Piece uploads repetitive rate and reaches 50%, and in this case, repeated file stores the file storage speed ratio so that server
Relatively slow, the effective rate of utilization of memory space is low.
Summary of the invention
The embodiment of the invention provides a kind of storage method of file, device and servers, it is intended to solve existing file
Storage method has that the effective rate of utilization of memory space is low, storage speed is slow.
On the one hand, a kind of storage method of file is provided, which comprises
It receives and sends the file that client uploads；
The digest value of the file is calculated according to presupposed information digest algorithm；
It whether there is the mapping relations of the digest value and file index in file index table；
If the mapping relations of the digest value and file index are not present in File Index Table, the file is sent to file
Server is stored, and receives the file index for the file that the file server generates.
On the other hand, a kind of storage device of file is provided, described device includes:
File reception unit, for receiving the file for sending client and uploading；
Digest value acquiring unit, for calculating the digest value of the file according to presupposed information digest algorithm；
Query unit, for whether there is the mapping relations of the digest value and file index in file index table；
File storage unit, if the mapping relations for the digest value and file index to be not present in File Index Table,
It sends the file to file server to be stored, and receives the file rope for the file that the file server generates
Draw.
In another aspect, providing a kind of server, the server includes the storage device of file as described above.
In the embodiment of the present invention, receives and send the file that client uploads；According to described in the calculating of presupposed information digest algorithm
The digest value of file；It whether there is the mapping relations of the digest value and file index in file index table；If file rope
Draw the mapping relations that the digest value and file index are not present in table, send the file to file server and stored,
And the file index for the file that the file server generates is received, the present invention realizes same file on server
Storage is a, improves the effective rate of utilization of the memory space of server.
Detailed description of the invention
Fig. 1 is the implementation flow chart of the storage method for the file that the embodiment of the present invention one provides；
Fig. 2 is the implementation flow chart of the storage method of file provided by Embodiment 2 of the present invention；
Fig. 3 is the concrete structure diagram of the storage device for the file that the embodiment of the present invention three provides；
Fig. 4 is the concrete structure diagram of the storage device for the file that the embodiment of the present invention four provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, it receives and sends the file that client uploads；Institute is calculated according to presupposed information digest algorithm
State the digest value of file；It whether there is the mapping relations of the digest value and file index in file index table；If file
The mapping relations of the digest value and file index are not present in concordance list, sends the file to file server and is deposited
Storage, and receive the file index for the file that the file server generates.
Realization of the invention is described in detail below in conjunction with specific embodiment:
Embodiment one
Fig. 1 shows the implementation process of the storage method of the file of the offer of the embodiment of the present invention one, is to execute with server
Main body, details are as follows:
It should be noted that Message Digest 5 is that the input information of random length is encrypted and generates length and fixes
Pseudorandom input algorithm, be mainly characterized by ciphering process and do not need key, and the data by encryption can not be solved
Close, identical digest value can just be obtained by only inputting identical clear data by identical Message Digest 5, that is, pass through phase
When same Message Digest 5 acquires identical digest value, then the corresponding plaintext of identical digest value is identical.Using identical
Message Digest 5 when, digest value can be used as the unique identification of plaintext.
In step s101, it receives and sends the file that client uploads.
In the present embodiment, the transmission client is interacted with server by network, wherein server includes but unlimited
Even if in communication server, SNS server.The file includes but is not limited to picture, voice, text document, application program.Clothes
The file that device reception transmission client of being engaged in uploads.When server is instant communication server, transmission client is instant messaging
Client, the file that instant communication client is sent to reception instant communication client need first to upload to instant communication server
Upper storage receives instant communication client and obtains file from instant communication server again.
In step s 102, the digest value of the file is calculated according to presupposed information digest algorithm.
In the present embodiment, message digest algorithm is used for the input of random length by processing output regular length abstract
The algorithm of value, the presupposed information digest algorithm include any of MD5, SHA-1 and hash algorithm.Different message digest algorithms
The digest value length of acquisition is different, if MD5 algorithm digest value has 128 bits, has 160 bits with SHA-1 algorithm digest value
Position.Either use which kind of message digest algorithm, obtain digest value can unique identification input file.Server according to
Presupposed information digest algorithm calculates the digest value of the file.
In step s 103, it whether there is the mapping relations of the digest value and file index in file index table.
In the present embodiment, the File Index Table be the transmission client that is recorded on server on file server
The table of mapping relations between the digest value of the file index of storage file and storage file, wherein file index and digest value one
One is corresponding.The file index is the relevant information for recording storage file on file server comprising but it is not limited to text
Storage catalogue, the file name of part, specific file can be obtained according to file index from file server by receiving client.
Server is according to the digest value file index table obtained is calculated, to obtain in File Index Table with the presence or absence of the digest value
With the mapping relations of file index, wherein the mapping relations of the digest value and file index can be by including but is not limited to
File digest values are sent client id, file index, are stored in the recent period using the table of time.Wherein, when the recent use
Between limited time limit for storage file on server calculation document server, to control whether the mapping relations exist
Perhaps delete when file stores or when being downloaded, server using present system time as File Index Table in accordingly make a summary
It is worth corresponding with the mapping relations of file index in the recent period using the time, corresponds to what storage file renewed to reach the increase mapping relations
Purpose.Such as the storage file pot-life on file server is 1 year, when by using time and system current system in the recent period
Between calculation document holding time, if the holding time be more than 1 year, the mapping relations are deleted, if while reflecting without other
The relationship of penetrating corresponds to this document, deletes the storage file.File Index Table is as shown in table 1,
Table 1:
If the mapping relations of the digest value and file index are not present in File Index Table, step S104 is executed.
In step S104, if the mapping relations of the digest value and file index are not present in File Index Table, send
The file to file server is stored, and receives the file index for the file that the file server generates.
In the present embodiment, the file server is used for the file that storage server is sent, in specific implementation, file
Server and server can be deployed in same server, can also independently dispose.Since digest value can be used as file
Unique identification can then judge whether file is identical by the digest value of documents.Before storage file, server is looked into
It askes the mapping relations in File Index Table with the presence or absence of the digest value and file index and sends the file extremely if it does not exist
File server is stored, and receives the file index for the file that the file server generates.For bigger
File is compared since digest value length is fixed and length is short by digest value, and calculation amount is small, and can keep file only
Storage is a, improves the utilization rate of memory space.
A kind of optinal plan is after step s 104, can also to increase the digest value in the File Index Table
With the mapping relations of the file index of the file.
Specifically, recording the preservation feelings of file in file server in real time by increasing the mapping relations in File Index Table
Condition can effectively control the repetition storage of file.
Alternative dispensing means are, after step s 104, can also send the file index to receiving client, with
The file is downloaded according to the file index convenient for the reception client.
Specifically, the file index is the relevant information for recording storage file on file server comprising but
It is not limited to storage catalogue, the file name of file, text can be obtained according to file index from file server by receiving client
Part, while server modification File Index Table near-mid term uses the time.
Wherein, it using picture and instant communication server as the applicable scene of objectives object factory the present embodiment, carries out
It is described as follows:
When transmission client receives the picture of contact person's transmission, the user for sending client thinks that picture is more intentional
Think, the picture is forwarded in other contact persons or group by sending client, instant communication server receives transmission visitor
When the picture that family end is submitted, the MD5 digest value of the picture is generated using MD5 algorithm, while inquiring the text of instant communication server
In part concordance list whether the MD5 digest value of the existing picture and the mapping relations of file index, if there is no the picture
The mapping relations of MD5 digest value and file index, i.e., without saving corresponding picture, instant communication server on file server
Picture is sent to file server to store, while receiving the file index of file server generation, in File Index Table
The middle MD5 digest value for saving the file index, picture that receive and the recent of picture use time, later, instant messaging service
Device by file index by instant communication information be sent to receive forwarding picture reception client, these receive clients according to
File index download pictures from file server, this ensure that identical file only stores portion in file server.
The present embodiment can achieve the digest value of the file obtained by comparative information digest algorithm, it is ensured that file service
Same file only stores portion on device, improves the storage space utilization of file server.
Embodiment two
Fig. 2 shows the implementation processes of the storage method of file provided by Embodiment 2 of the present invention, are to execute with server
Main body, details are as follows:
In step s 201, it receives and sends the file that client uploads.
In step S202, the digest value of the file is calculated according to presupposed information digest algorithm.
In step S203, it whether there is the mapping relations of the digest value and file index in file index table.
Specifically, executing step if the mapping relations of the digest value and file index are not present in File Index Table
S204 executes step S205 if there are the mapping relations of the digest value and file index in File Index Table.
In step S204, if the mapping relations of the digest value and file index are not present in File Index Table, send
The file to file server is stored, and receives the file index for the file that the file server generates.
In the present embodiment, step S101~S103 in the execution of step S201~S203 and above-described embodiment one is held
Row process is similar, details referring to above-described embodiment one description.
In step S205, if not stored in File Index Table there are the mapping relations of the digest value and file index
The file updates the mapping relations of digest value described in the File Index Table and file index.
In the present embodiment, it is described it is recent using the time on server calculation document server storage file it is limited
Time limit, to control whether the mapping relations exist or delete.Server is when file is stored or is downloaded with current
Corresponding digest value is corresponding with the mapping relations of file index in system time modification File Index Table uses the time in the recent period, wherein
Present system time is the current time of server.There are the mapping of the digest value and file index passes in File Index Table
In the case where system, supporting paper server has stored identical file, do not need repeat store this document, if increase or
Update the mapping relations of the digest value and file index in the File Index Table on server.When in the recent period using time and current system
When uniting the time difference more than preset time, deletes the file of file server storage and delete to map accordingly in File Index Table and close
System.Be for 1 year with preset time, when file by with January 1 was stored on file server for the first time within 2012 after,
January 3 in 2012 is primary by the forwarding of transmission client and downloads, and server will increase a transmission client pair in File Index Table
The recent of this document answered uses the time for 3 mapping relations January in 2012, if subsequent this document is not by other transmission clients
When forwarding, it is only necessary to be further added by a corresponding mapping relations, and work as and receive client downloads this document, it is only necessary to will be corresponding
The recent of mapping relations updates current time using the time, if after transmission client transmits a document, without other reception clients
This document was downloaded at end, then the digest value that server will be deleted this document in File Index Table is corresponding when to January 3 in 2013
Map record, and send messages to file server make its delete storage file.File can be effectively raised in this way
The utilization rate of server storage.
Alternative dispensing means are, after step s 204, can also send the file index to receiving client, with
The file is downloaded according to the file index convenient for the reception client.
Specifically, the file index is the relevant information for recording storage file on file server comprising but
It is not limited to storage catalogue, the file name of file, text can be obtained according to file index from file server by receiving client
Part, while server modification File Index Table near-mid term uses the time.
It wherein, is tool with picture and social network services (Social Networking Services, SNS) server
Body target object describes the applicable scene of the present embodiment, is described as follows:
When transmission client receives picture, the user for sending client thinks that picture is more interesting, passes through and sends visitor
The picture is forwarded in other contact persons or community by family end, when SNS server receives the picture for sending client submission,
The MD5 digest value of the picture is generated using MD5 algorithm, at the same inquire in the File Index Table of SNS server whether it is existing should
The MD5 digest value of picture and the mapping relations of file index, if the MD5 digest value of the existing picture and file index
Mapping relations have then stored the identical picture of picture submitted with transmission client, have no longer stored on file server
The picture that client is submitted is sent, as long as SNS server increases with present system time or update the picture in File Index Table
MD5 digest be worth newest using the time in corresponding mapping relations, while file index is passed through into instant communication information transmission
To the client for receiving forwarding picture, these clients download pictures from file server according to file index, even if the figure
Piece is forwarded repeatedly, and SNS server only needs to increase or update corresponding mapping relations, and file server only stores portion
The picture.
The present embodiment can achieve the digest value of the file obtained by comparative information digest algorithm, it is ensured that file service
Same file only stores portion on device, improves the storage space utilization of file server, improves the efficiency of file storage.
Embodiment three
Fig. 3 shows the specific block diagram of the storage device of the file of the offer of the embodiment of the present invention three, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown.In the present embodiment, the storage device of this document includes: that file connects
Unit 31, digest value acquiring unit 32, query unit 33, file storage unit 34, index adding unit 35 and index is received to send
Unit 36.
Wherein, file reception unit 31, for receiving the file for sending client and uploading；
Digest value acquiring unit 32, for calculating the digest value of the file according to presupposed information digest algorithm；
Query unit 33, the mapping for whether there is the digest value and file index in file index table are closed
System；
File storage unit 34, if the mapping for the digest value and file index to be not present in File Index Table is closed
System, sends the file to file server and is stored, and receives the file for the file that the file server generates
Index.
Further, described device further include:
Adding unit 35 is indexed, for increasing the file rope of the digest value Yu the file in the File Index Table
The mapping relations drawn.
Further, described device further include:
Transmission unit 36 is indexed, for sending the file index to client is received, in order to the reception client
The file is downloaded according to the file index.
The storage device of file provided in an embodiment of the present invention can be applied in aforementioned corresponding embodiment of the method one, in detail
Feelings are referring to the description of above-described embodiment one, and details are not described herein.
Example IV
Fig. 4 shows the specific block diagram of the storage device of the file of the offer of the embodiment of the present invention four, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown.In the present embodiment, the storage device of this document includes:
Wherein, file reception unit 41, for receiving the file for sending client and uploading；
Digest value acquiring unit 42, for calculating the digest value of the file according to presupposed information digest algorithm；
Query unit 43, the mapping for whether there is the digest value and file index in file index table are closed
System；
File storage unit 44, if the mapping for the digest value and file index to be not present in File Index Table is closed
System, sends the file to file server and is stored, and receives the file for the file that the file server generates
Index.
Further, described device further include:
Index upgrade unit 45, if in File Index Table there are the mapping relations of the digest value and file index,
The file is not stored, updates the mapping relations of digest value described in the File Index Table and file index.
Further, described device further include:
Adding unit 46 is indexed, for increasing the file rope of the digest value Yu the file in the File Index Table
The mapping relations drawn.
Further, described device further include:
Transmission unit 47 is indexed, for sending the file index to client is received, in order to the reception client
The file is downloaded according to the file index.
The storage device of file provided in an embodiment of the present invention can be applied in aforementioned corresponding embodiment of the method two, in detail
Feelings are referring to the description of above-described embodiment two, and details are not described herein.
It is worth noting that, included each unit is only drawn according to function logic in the above system embodiment
Point, but be not limited to the above division, as long as corresponding functions can be realized；In addition, each functional unit is specific
Title is also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.
In addition, those of ordinary skill in the art will appreciate that realizing all or part of the steps in the various embodiments described above method
It is that relevant hardware can be instructed to complete by program, corresponding program can store to be situated between in a computer-readable storage
In matter, the storage medium, such as ROM/RAM, disk or CD.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of storage method of file, which is characterized in that the described method includes:
It receives and sends the file that client uploads；
The digest value of the file is calculated according to presupposed information digest algorithm；
It whether there is the mapping relations of the digest value and file index in file index table, the mapping relations pass through packet
Include file digest values, send client id, file index, stored in the recent period using the table of time, it is described it is recent use the time
The limited time limit of storage file on server calculation document server, with control the mapping relations whether exist or
It deletes；
If there are the mapping relations of the digest value and file index in File Index Table, the file is not stored, described in update
The mapping relations of digest value described in File Index Table and file index, specifically include: increasing in the File Index Table new
The digest value and file index mapping relations, or in the modification File Index Table the already present digest value and
In the mapping relations of file index it is recent use the time；
If the mapping relations of the digest value and file index are not present in File Index Table, the file is sent to file service
Device is stored, and receives the file index for the file that the file server generates；
The holding time of the file is calculated according to the recent present system time using time and service device；If described
The holding time reaches the limited time limit, then delete it is described recent using time corresponding mapping relations, if the file without
Other mapping relations then delete the stored file.
2. the method as described in claim 1, which is characterized in that the presupposed information digest algorithm include MD5, SHA-1 and
Hash algorithm it is any.
3. method according to claim 1 or 2, which is characterized in that the text for receiving the file server and generating
After the file index of part, further includes:
Increase the mapping relations of the file index of the digest value and the file in the File Index Table.
4. method as claimed in claim 3, which is characterized in that the method also includes:
The file index is sent to client is received, in order to which the reception client is according to file index downloading
File.
5. a kind of storage device of file, which is characterized in that described device includes:
File reception unit, for receiving the file for sending client and uploading；
Digest value acquiring unit, for calculating the digest value of the file according to presupposed information digest algorithm；
Query unit, it is described for whether there is the mapping relations of the digest value and file index in file index table
Mapping relations are by including file digest values, sending client id, file index, in the recent period stored using the table of time, institute
The limited time limit in the recent period using the time for storage file on server calculation document server is stated, to control the mapping relations
Whether exist or deletes；
Index upgrade unit, if for, there are the mapping relations of the digest value and file index, not stored in File Index Table
The file updates the mapping relations of digest value described in the File Index Table and file index, specifically includes: described in modification
In File Index Table in the mapping relations of the already present digest value and file index it is recent use the time；
Adding unit is indexed, for increasing reflecting for the digest value and the file index of the file in the File Index Table
Penetrate relationship；
File storage unit is sent if the mapping relations for the digest value and file index to be not present in File Index Table
The file to file server is stored, and receives the file index for the file that the file server generates；
Wherein, described device is also used to calculate the file according to the recent present system time using time and service device
Holding time；If the holding time reaches the limited time limit, described recent corresponding reflect using the time is deleted
Relationship is penetrated, if the file deletes the stored file without other mapping relations.
6. device as claimed in claim 5, which is characterized in that described device further include:
Transmission unit is indexed, for sending the file index to client is received, in order to which the reception client is according to institute
It states file index and downloads the file.
7. a kind of server, which is characterized in that the server includes the storage device such as file described in claim 5 or 6.
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| CN201310180414.2A CN104156376B (en) | 2013-05-15 | 2013-05-15 | A kind of storage method of file, device and server |
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| CN201310180414.2A CN104156376B (en) | 2013-05-15 | 2013-05-15 | A kind of storage method of file, device and server |
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| CN104156376B true CN104156376B (en) | 2019-03-26 |
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| CN105808589A (en) * | 2014-12-31 | 2016-07-27 | 中国电信股份有限公司 | File processing method and apparatus |
| CN104994442A (en) * | 2015-07-06 | 2015-10-21 | 无锡天脉聚源传媒科技有限公司 | Method and device for transmitting video file |
| CN105306537B (en) * | 2015-09-22 | 2018-12-18 | 浪潮(北京)电子信息产业有限公司 | A kind of method of file that transmitting the office automation system, server and client side |
| CN107656925A (en) * | 2016-07-24 | 2018-02-02 | 平安科技（深圳）有限公司 | The method and device that image file is had access to |
| CN106599320A (en) * | 2016-12-30 | 2017-04-26 | 郑州云海信息技术有限公司 | File information abstract value calculation method and device |
| CN109151059A (en) * | 2018-09-27 | 2019-01-04 | 乐蜜有限公司 | A kind of file uploading method, device, electronic equipment and storage medium |
| CN113556580A (en) * | 2019-06-10 | 2021-10-26 | 西安万像电子科技有限公司 | Data transmission method and device |
| CN111506268B (en) * | 2020-04-17 | 2023-07-18 | 北京百度网讯科技有限公司 | Code file storage method and device and electronic equipment |
| CN113872996A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Data reconciliation method and device |
| CN114827063A (en) * | 2021-01-28 | 2022-07-29 | 华为技术有限公司 | Message forwarding method and system |
| CN112953812A (en) * | 2021-01-29 | 2021-06-11 | 西藏宁算科技集团有限公司 | File message uploading and storing method and device thereof |
| CN112838981A (en) * | 2021-02-05 | 2021-05-25 | 西藏宁算科技集团有限公司 | Instant message processing method, device and system and electronic equipment |
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