CN101534322A - File upload system and file upload method - Google Patents

File upload system and file upload method Download PDF

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Publication number
CN101534322A
CN101534322A CN200910038583A CN200910038583A CN101534322A CN 101534322 A CN101534322 A CN 101534322A CN 200910038583 A CN200910038583 A CN 200910038583A CN 200910038583 A CN200910038583 A CN 200910038583A CN 101534322 A CN101534322 A CN 101534322A
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China
Prior art keywords
file
upload
client
server
uploaded
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CN200910038583A
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Chinese (zh)
Inventor
司天歌
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Tencent Technology Shenzhen Co Ltd
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Tencent Technology Shenzhen Co Ltd
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Priority to CN200910038583A priority Critical patent/CN101534322A/en
Publication of CN101534322A publication Critical patent/CN101534322A/en
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Abstract

The invention relates to a file upload system and a file upload method. The file upload system comprises an index server and at least one upload server, wherein the index server is used for receiving an upload request of a client and judges whether the upload server stores a file requested to upload by the client, if so, the index server sends prompting information to the client, and otherwise, the index server allocates one upload server for the client to upload the file. The file upload method comprises: receiving the upload request of the client; judging if the upload server stores the file requested to upload by the client; if so, sending the prompting information to the client; and otherwise, allocating one upload server for the client to upload the file. The file upload system and the file upload method can effectively save the storage space of the upload server.

Description

File uploading system and file uploading method
Technical field
The present invention relates to field of computer technology, relate in particular to a kind of file uploading system and file uploading method.
Background technology
What the Internet user uploaded The data at present is the mode that single-point is uploaded.The problem that single-point is uploaded existence has: certain user uploads a file behind server, another one user may upload same file to this server, be that server may repeat repeatedly to store same file, will certainly waste the memory space of server like this.
Summary of the invention
In view of this, be necessary to upload the problem that mode is wasted the server stores space, a kind of file uploading system that can effectively save the server stores space is provided at single-point.
A kind of file uploading system comprises index server and at least one upload server; Described index server is used to receive the upload request of client, judges whether that upload server stored the file that client-requested is uploaded, if then send information to described client; If not, then distribute a upload server for described client upload file.
Preferably, described upload request comprises the file hash of the file that client-requested is uploaded, and described file hash is file to be calculated the unique identification character string that draws by hashing algorithm.
Preferably, described hashing algorithm is MD5 algorithm or SHA-1 algorithm.
Preferably, described index server stores the file storage information table, described file storage information table comprises file hash, integrality, the memory address of all files of all upload server storages, described integrality is used to describe the integrality of corresponding file, and described memory address is used to describe the upload server that corresponding file is stored.
Preferably, described integrality identifies with 0 and 1, and 0 expression corresponding file is incomplete, and 1 expression corresponding file is complete.
Preferably, described index server is used to also to judge whether the file that the client-requested of described upload server storage uploads is complete, if the file that described information is uploaded for request has existed; If not, described information is the upload server address of the described file of storage.
Preferably, described upload server stores the file corresponding file of uploading with client-requested and uploads state table, and described file is uploaded state table and comprised burst hash, integrality, burst start offset amount, branch leaf length, uploads length; Described burst hash is used to identify the file fragmentation of the file that this client-requested uploads, described integrality is used to describe the integrality of corresponding file burst, described burst start offset amount is used for describing the start offset amount of corresponding file burst at original document, described minute leaf length is used to describe the total length of corresponding file burst, and the described length of having uploaded is used to describe the part that the corresponding file burst has been uploaded.
Preferably, described integrality identifies with 0 and 1, and 0 expression corresponding file burst is incomplete, and 1 expression corresponding file burst is complete.
In addition, also provide a kind of file uploading method.
A kind of file uploading method comprises: the upload request that receives client; Judge whether that upload server stored the file that client-requested is uploaded; If then send information to described client; If not, then distribute a upload server for described client upload file.
Preferably,, also comprise judging whether described file is complete, if the file that described information is uploaded for request has existed if upload server has been stored the file that client-requested is uploaded; If not, described information is the upload server address of the described file of storage.
Above-mentioned file uploading system manages upload file by index server, and the control client does not repeat to upload identical file, thereby guarantees that upload server can the identical file of repeated storage, therefore can effectively save the memory space of upload server.
Description of drawings
Fig. 1 is the schematic diagram of file uploading system.
Fig. 2 is the schematic diagram of first kind of file uploading method.
Fig. 3 is the schematic diagram of second kind of file uploading method.
Fig. 4 is the schematic diagram of the third file uploading method.
Embodiment
Fig. 1 is the schematic diagram of file uploading system.File uploading system comprises index server, a plurality of upload server and a plurality of client.For convenience of description, Fig. 1 has only illustrated upload server and client that three situation is respectively arranged.Three upload server difference called after upload servers 1, upload server 2 and upload servers 3, client is called after client 1, client 2 and client 3 respectively.
Index server is used to receive the upload request of client, and is responsible for distributing a upload server to handle the upload request of client.Generally, index server has only one.With Fig. 1 is example, and index server distributes upload server 1 to handle the upload request of client 3, distributes upload server 2 to handle the upload request of client 1, distributes upload server 3 to handle the upload request of client 2.
In order to realize distribution and the management to upload server, index server is safeguarded a file storage information table of being made up of file hash, integrality, memory address voluntarily.Wherein, file hash is meant that each file of all upload servers being stored by hashing algorithm calculates the unique identification character string that draws.Hashing algorithm commonly used has MD5 algorithm and SHA-1 algorithm, and the user also can specify when specific implementation voluntarily.Integrality is used to describe the integrality of corresponding file.Integrality identifies with 0 and 1, and 0 expression corresponding file is incomplete, and 1 expression corresponding file is complete.Memory address is used to describe the upload server that corresponding file is stored.When adopting the SHA1 algorithm, the file storage information table of index server storage as shown in Table 1:
Table one
File hash Integrality Memory address
66a35ed10c264f65eb796a0bfef2226bb3d1ed4f 1 store1.upload.store.qq.com:3901
fcefb8dba32ec589bcd0f7786e8c096c1f804063 0 store1.upload.store.qq.com:3901
17e55b74f152321843377ef29eecaf0d0086d927 1 store2.upload.store.qq.com:3901
As shown in Table 1, the pairing file of file hash 66a35ed10c264f65eb796a0bfef2226bb3dled4f is complete (is this document uploaded finish), being stored in the address is store1.upload.store.qq.com, serve port is in 3901 the upload server, and file hash is the pairing file of fcefb8dba32ec589bcd0f7786e8c096c1f804063 is incomplete (be this document do not upload finish), and uploading and storing of this document is store1.up1oad.store.qq.com by the address equally, serve port is that 3901 upload server is responsible for finishing.
Client is before upload file, can at first send upload request to index server, the file hash that comprises the file that client-requested uploads in this upload request, whether index server can be inquired about this document according to this document hash and exist in the file storage information table, if exist, judge further then whether this document is complete, if it is complete, then send this document and had information, if imperfect then send the upload server address information of storage this document to client to client.If in the file storage information table, do not inquire the record of this document, then in the file storage information table, add corresponding information, and specify the upload server address.According to this strategy, can realize that file uploads in the scheme the heavy and continuous functional characteristic that passes of row, thereby guarantee that upload server can the same file of repeated storage, therefore can effectively save the memory space of upload server.
Upload server is responsible for the upload procedure of concrete file content.In order to disperse the network pressure of whole platform, avoid preferentially causing the restriction of number of users because of single upload server bandwidth, upload server can comprise many, the user is determined according to its strategy by index server the selection of upload server.
Upload server and client all are divided into a plurality of file fragmentations to each upload file, are as the base unit of uploading in upload procedure with file fragmentation.If a plurality of clients are being uploaded same file simultaneously, then upload server can be dispatched, and makes different clients upload different file fragmentations as far as possible, thereby improves the uploading speed at this single file.
For this reason, upload server safeguards all that at each upload file a file uploads state table, in order to describe the situation of uploading of this document.When client-requested was uploaded a file, upload server at first detected this document and uploads state table.File is uploaded state table by burst hash, integrality, burst start offset amount, branch leaf length with uploaded length and formed, as shown in Table 2:
Table two
The burst hash Integrality Burst start offset amount Divide leaf length Uploaded length
89a35ed10c264f65eb796a0bfef2226bb3d1ed4f 1 0 524288 524288
efcfb8dba32ec589bcd0f7786e8c096c1f804063 0 524289 524288 0
8be55b74f152321843377e876eecaf0d0086d927 0 1048577 524288 262144
In the table two, the burst hash is used to identify the file fragmentation of this document, uploads when this document burst to finish, and whether upload server can check the data of this document burst correct by the burst hash of this document burst.Integrality is represented the integrality of this document burst, and integrality is with 0 and 1 sign, and 0 expression this document burst is incomplete (is this document burst do not upload finish), and 1 expression this document burst is complete (is this document burst uploaded finish).Burst start offset amount is used for describing the start offset amount of this document burst at original document.The branch leaf length is used to describe the total length of this document burst.Uploaded length and be used to describe the part that this document burst has been uploaded, when the integrality of certain file fragmentation is 1, has uploaded length and should equal the branch leaf length.
Client is the promoter that file is uploaded task.When the initiation file is uploaded task, the file that client is at first uploaded request calculates file hash and file and uploads state table (integrality of each file fragmentation and uploaded length be changed to 0), file hash and file are uploaded state table submit to index server and upload server respectively, transmit the file fragmentation that does not have on the upload server subsequently as required, thereby finish the task of upload file.
Client has the file fragmentation management function.Client can be carried out burst to file according to fixing unit length, and this unit length can freely be set by the user.Client also can be carried out burst to file dynamically according to the bandwidth and the file size of network.
In the above-described embodiment, index server can lay respectively in the different hardware systems with upload server, links to each other by network; Also can be arranged in same hardware system.
File uploading method comprises numerous embodiments, specifies three kinds of execution modes wherein below.
Fig. 2 is the schematic diagram of first kind of file uploading method.First kind of file uploading method may further comprise the steps:
S101: the upload request that receives client.
S102: judge whether that upload server stored the file that client-requested is uploaded; If carry out S103; If not, carry out S104.
S103: send information to described client.
S104: distribute a upload server for described client upload file.
Fig. 3 is the schematic diagram of second kind of file uploading method.Second kind of file uploading method may further comprise the steps:
S201: the upload request that receives client.
S202: judge whether that upload server stored the file that client-requested is uploaded; If carry out S203; If not, carry out S206.
S203: judge whether described file is complete; If, carry out S204, if not, carry out S205.
S204: send the file of asking to upload to described client and had information.
S205: the upload server address information that sends the described file of storage to described client.
S206: distribute a upload server for described client upload file.
Fig. 4 is the schematic diagram of the third file uploading method.The third file uploading method is a kind of most complete method for uploading, has the function of heavy, the continuous biography of row, data verification.The third file uploading method may further comprise the steps:
S301: the file hash of the file that the client computation requests is uploaded, send upload request to index server.
S302: index server judges whether that upload server stored the file that client-requested is uploaded; If carry out S303; If not, carry out S304.
S303: index server judges whether described file is complete; If carry out S313; If not, carry out S305.
S304: index server adds a new record and distributes a memory address to add in this record in the file storage information table, this memory address is sent to client, carries out S307 then.
S305: index server takes out the memory address that writes down in the file storage information table and sends to client.
S306: client sends to upload server to the file hash of the file that request is uploaded, and carries out S309 then.
S307: the client calculation document is uploaded state table, sends to upload server with file hash.
S308: upload server is preserved file and is uploaded state table.
S309: upload server judges whether file that client-requested is uploaded is uploaded and finishes, if, carry out S313, if not, carry out S310.
Upload server is inquired about its file of storing and is uploaded state table, seeks the file fragmentation do not uploaded (be locating file upload integrality in the state table be 0 file fragmentation).If do not find, i.e. expression is uploaded and is finished.If the file fragmentation that has found certain not upload, then expression is not uploaded and is finished.
S310: upload server calculates uploading state information and sending to client of the file fragmentation do not uploaded.
Upload side-play amount and data length that state information comprises that this document burst lacks, the side-play amount that lacks=burst start offset amount+uploaded length, data length=minute leaf length-uploaded length.
S311: client transmits the file fragmentation of not uploaded to upload server.
After client receives response,, send the file fragmentation of not uploaded according to the side-play amount and the data length of upload server appointment.
S312: whether the file fragmentation that the upload server checking is received is correct, if, carry out S309, if not, carry out S311.
After client upload finished, upload server calculated its burst hash at this document burst, and compared with burst hash that file is uploaded in the state table, if different, i.e. the file fragmentation that expression is received is incorrect; If identical, i.e. the file fragmentation that expression is received is correct.
S313: the client ends file is uploaded task, index server transaction file information table memory.
Upload server notice client has been uploaded and has been finished, and the notice index server, and this document has been uploaded and finished, the file storage information table of corresponding its maintenance of renewal of index server.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (10)

1, a kind of file uploading system is characterized in that: comprise index server and at least one upload server; Described index server is used to receive the upload request of client, judges whether that upload server stored the file that client-requested is uploaded, if then send information to described client; If not, then distribute a upload server for described client upload file.
2, file uploading system according to claim 1 is characterized in that: described upload request comprises the file hash of the file that client-requested is uploaded, and described file hash is file to be calculated the unique identification character string that draws by hashing algorithm.
3, file uploading system according to claim 2 is characterized in that: described hashing algorithm is MD5 algorithm or SHA-1 algorithm.
4, file uploading system according to claim 2, it is characterized in that: described index server stores the file storage information table, described file storage information table comprises file hash, integrality, the memory address of all files of all upload server storages, described integrality is used to describe the integrality of corresponding file, and described memory address is used to describe the upload server that corresponding file is stored.
5, file uploading system according to claim 4 is characterized in that: described integrality identifies with 0 and 1, and 0 expression corresponding file is incomplete, and 1 expression corresponding file is complete.
6, file uploading system according to claim 1, it is characterized in that: described index server is used to also to judge whether the file that the client-requested of described upload server storage uploads is complete, if the file that described information is uploaded for request has existed; If not, described information is the upload server address of the described file of storage.
7, file uploading system according to claim 1, it is characterized in that: described upload server stores the file corresponding file of uploading with client-requested and uploads state table, and described file is uploaded state table and comprised burst hash, integrality, burst start offset amount, branch leaf length, uploads length; Described burst hash is used to identify the file fragmentation of the file that this client-requested uploads, described integrality is used to describe the integrality of corresponding file burst, described burst start offset amount is used for describing the start offset amount of corresponding file burst at original document, described minute leaf length is used to describe the total length of corresponding file burst, and the described length of having uploaded is used to describe the part that the corresponding file burst has been uploaded.
8, file uploading system according to claim 7 is characterized in that: described integrality identifies with 0 and 1, and 0 expression corresponding file burst is incomplete, and 1 expression corresponding file burst is complete.
9, a kind of file uploading method comprises:
Receive the upload request of client;
Judge whether that upload server stored the file that client-requested is uploaded;
If then send information to described client;
If not, then distribute a upload server for described client upload file.
10, file uploading method according to claim 9 is characterized in that: if upload server has been stored the file that client-requested is uploaded, also comprise judging whether described file is complete, if the file that described information is uploaded for request has existed; If not, described information is the upload server address of the described file of storage.
CN200910038583A 2009-04-13 2009-04-13 File upload system and file upload method Pending CN101534322A (en)

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CN104754012B (en) * 2013-12-31 2019-02-15 北京新媒传信科技有限公司 A kind of data transmission method and data transmission system
CN104754012A (en) * 2013-12-31 2015-07-01 北京新媒传信科技有限公司 Data transmission method and system
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Application publication date: 20090916