KR101089509B1 - Cloud computing network system and file distrubuting method of the same - Google Patents

Abstract

The cloud computing network system of the present invention controls the data file to be transmitted from the cloud members to the client, but changes the cloud member providing the data file if the data transfer rate of the cloud members is lower than the reference value. Therefore, when a large file is distributed and stored among a plurality of cloud members, the client can download at a high speed when downloading a file from the cloud members.

Description

CLOUD COMPUTING NETWORK SYSTEM AND FILE DISTRUBUTING METHOD OF THE SAME

The present invention relates to a cloud computing network system capable of distributed processing.

In general, a computer (hereinafter referred to as a client) requesting predetermined information in order to receive electronicized information through an arbitrary network, a computer (hereinafter referred to as a server) providing the requested information from the client, and an information transmission path between them The network constituting the network must exist. Among them, the server and the network are not resources that are serviced by only one client. Therefore, a heavy load is applied when responding to requests from a plurality of different clients. As a result, the number of clients that can connect to the server at the same time should be limited, and clients requesting information can only use a portion of the bandwidth allocated to them.

To solve this problem, content providers who sell information through the Internet purchase large numbers of expensive computers that can act as servers to increase the number of users / customers and improve the quality of service. I have to invest heavily in increasing the bandwidth of the network. Content providers should estimate the maximum number of clients and prepare resources for the stable provision of information services. If the information demand does not occur as the maximum number of clients, the content providers will be wasted. If there are more clients requesting information than the maximum number of clients, the problem of providing a normal service still remains.

Accordingly, an object of the present invention is to provide a cloud computing network system capable of providing a service to many clients with limited resources.

Another object of the present invention is to provide a file distribution method for efficiently providing a large file to a client.

According to an aspect of the present invention for achieving the above object, a file distribution method of a cloud computing network system includes: receiving a file request from a client, selecting cloud members to provide the requested file, Providing information about cloud members to the client, receiving a data transfer rate from the cloud members, determining whether to change the cloud member according to the received data transfer rate, and When the change of the cloud member to provide the requested file is determined, providing the changed cloud member information to the client.

In this embodiment, the file distribution method, the step of determining whether the requested file is a hot file, and when the requested file is a hot file, selecting the cloud members to be distributed and stored in the storage server storage file; And transmitting a file stored in the storage server to the selected cloud members.

In this embodiment, the file distribution method further comprises dividing a file stored in the storage server into a plurality of data blocks, wherein the file transfer step, each of the data blocks, the selected cloud members Sending to.

In this embodiment, the step of determining whether or not to change the cloud member, when the data transmission rate received from the cloud member is less than the reference value determines the change to the cloud member.

In the present embodiment, the providing of the changed cloud member information to the client may include: a data block provided by the cloud member whose data transfer rate is lower than or equal to the reference value when there are cloud members whose data transfer rate is lower than or equal to the reference value among the cloud members; It provides the client with information about a cloud member that stores the same data block as.

In this embodiment, the reference value is 300 KB / sec.

A cloud computing network system providing a service in response to a client request in accordance with another aspect of the present invention comprises: a main server, a storage server for storing files to be provided to the client, and a file requested from the client. Include cloud members. The main server selects cloud members to provide a file requested from the client, provides the client with information on the selected cloud members, receives a data transmission rate from the cloud members, and transmits the received data. Change the cloud member to provide the requested file according to the speed, and send the changed cloud member information to the client.

In this embodiment, the main server, a client manager for managing the client, providing the client with information about cloud members in which the file requested from the client is stored, a member manager for managing the cloud members, And a file distribution manager for downloading the file from the storage server when the file requested from the client is a file. The member manager provides cloud member information capable of storing the hot file to the file distribution manager, and the file distribution manager transmits the downloaded file to the cloud members with reference to the cloud member information.

The member manager receives data transmission rate information from the cloud members that transmit the file to the client, and provides the changed cloud member information to the client manager when the received data transmission rate is lower than a reference value. The client manager provides the changed cloud member information to the client.

In this embodiment, the file distribution manager divides the file downloaded from the storage server into a plurality of data blocks and transmits the data blocks to the cloud members, respectively.

In this embodiment, the member manager, when there is a cloud member whose data transfer rate is less than the reference value among the cloud members, the cloud that stores the same data block as the data block provided by the cloud member whose data transfer rate is below the reference value Provide information about the member to the client manager.

In this embodiment, the file requested by the client is any one of an application program file, a game program file, a text data file, a document file, a picture file, a music file, and a video file.

Such a cloud computing network system of the present invention can provide services to many clients with limited resources by distributing files stored in file storage to cloud members. In particular, while a large file is distributed and stored in a plurality of cloud members, the client can download at a high speed when downloading a file from the cloud members.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Cloud Computing Network (CCN) is a network service designed to provide users with software, security solutions and computing power on-demand through virtualization of network and storage resources. The CCN service improves network efficiency, and does not cause a slowdown even when concentrating traffic, thereby providing high quality service. The present invention provides a system applying the CCN and a file distribution method thereof.

1 illustrates a cloud computing network system in accordance with a preferred embodiment of the present invention.

Referring to FIG. 1, the cloud computing network system 100 includes a main server 110, a storage server 120, a network 130, clients 141-143 and cloud members 151-153. do. The main server 110, the storage server 120, the clients 141-143, and the cloud members 151-153 are interconnected via a network 130, which is a communication line such as the Internet. The internet line connected between the main server 110 and the clients 141-143 is a finite resource, and the operator operating the main server 110 to increase the capacity of the line is an internet data center (IDC) or an ISP (internet). You have to pay the service provider more lines. Therefore, an operator operating the main server 110 requires an effort to efficiently provide services to the clients 141 to 143 with a limited line.

The storage server 120 stores files provided by an operator (content provider) that provides a large amount of data such as an application program file, a game program file, a text data file, a document file, a picture file, a music file, a video file, a barcode file, and the like. . Files stored in the storage server 120 may be provided to the clients 141 to 143 under the control of the main server 110.

The main server 110 controls the files stored in the storage server 120 to be provided to the clients 141-143 in response to the file request of the clients 141-143. The main server 110 distributes and stores the files stored in the storage server 120 to the cloud members 151-153 in order to efficiently use the limited resources of the network 130, and the clients 141-143. ) To download files from the cloud members 151-153 instead of the storage server 120.

Clients 141-143 connect to main server 110 via network 130 using a personal computer. The clients 141-143 request download of some of the files that the main server 110 can provide, and under the control of the main server 110, the storage server 120 or the cloud members 151-153. Download the desired file from. The clients 141-143 may be various handheld terminals capable of wireless Internet such as a personal digital assistant (PDA), a mobile phone, etc., as well as a personal computer such as a desktop computer and a notebook.

Clients 141-143, which are connected to main server 110 via network 130, have a memory (not shown) that stores client software programs necessary for downloading files from cloud members 151-153. And the client software program is executed by a processor (not shown).

The cloud members 151-153 are connected to the main server 110 via the network 130 using a personal computer. The cloud members 151-153 download a file stored in the storage server 120 under the control of the main server 110, and transmit the file to the clients 141-143.

2 is a diagram illustrating a configuration of the main server 110 illustrated in FIG. 1.

Referring to FIG. 2, the main server 110 includes a client manager 111, a master manager 112, a member manager 113, and a file distribution manager 114. The client manager 110 discloses a list of files stored in the storage server 120 and available to the clients in a web browser. The clients 141-143 request the download of the files included in the file list of the web browser. The client manager 111 is responsible for managing the clients 141-143 requesting files. That is, the client manager 111 determines that the file requested from the clients 141-143 is a hot file according to the number of clients requesting the same file, the number of clients downloading the same file for a predetermined time, the traffic for the file, and the like. Determine whether The client manager 110 controls the requested file to be transferred from the storage server 120 to the clients 141-143 if the file requested by the clients 141-143 is not a hot file. The client manager 110 stores the master manager 112 and the member manager such that the file stored in the storage server 120 is distributed to the cloud members 151-153 if the file requested from the clients 141-143 is a hot file. Control 113.

The member manager 113 manages cloud members 151-153. That is, the cloud members 151-153 are in a power-on state, connected to the network 130, and periodically collect information on cloud members that can download a file. The member manager 113 provides the file distribution manager 114 with information about the collected cloud members.

The file distribution manager 114 downloads and stores a hot file from the storage server 120 under the control of the master manager 112, and distributes the stored hot file to the cloud members 151-153. The client manager 111 transmits information about cloud members 151-153 in which the files requested by the clients 141-143 are stored, to the clients 141-143.

The master manager 112 controls the file distribution manager 114 to download the hot file from the storage server 120, and checks whether the hot file downloaded by the file distribution manager 114 is in error.

The client manager 111, the master manager 112, the member manager 113, and the file distribution manager 114 included in the main server 110 may be integrated into a single manager. In addition, each of the client manager 111, the master manager 112, the member manager 113, and the file distribution manager 114 may be configured as a computer in which a software program for performing a predetermined function is embedded. May be called.

3 is a diagram conceptually illustrating a file transmitted to the cloud members 151-153 by the file distribution manager illustrated in FIG. 2.

Referring to FIG. 3, the file distribution manager 114 divides the file D_FILE downloaded from the storage server 120 into a plurality of data blocks B0-Bn. The size of the file D_FILE downloaded from the storage server 120 to the file distribution manager 114 may range from several tens of megabytes (MByte) to several hundred megabytes. In order to efficiently distribute and store the large file D_FILE in the cloud members 151-153 as described above, the file distribution manager 114 of the present invention stores the downloaded file D_FILE in small data blocks B0-Bn. Divide by.

4 conceptually illustrates a client downloading data blocks from four cloud members.

Referring to FIG. 4, the cloud members 410-440 respectively store data blocks B0-B3 of a file requested by the client 400. In response to the file request of the client 400, the main server 110 provides the client 400 with information about the cloud members 410-440 in which the data blocks B0-B3 of the requested file are stored. The client 400 accesses the cloud members 410-440 according to the information provided from the main server 110, and downloads the necessary data blocks B0-B3 from the cloud members 410-440, respectively. Client 400 and cloud members 410-440 are interconnected via a network 405, such as the Internet.

For example, if the file requested from the client 400 and downloaded from the cloud members 410-440 is a movie file, the size of the movie file may range from several hundred megabytes to several gigabytes. In general, since the movie playing program of the client 400 takes a lot of time to download all the large movie files, the movie file is played when a movie file of a predetermined size is downloaded before the entire movie file is downloaded. The remaining data blocks B1-B3 must be downloaded while the first data block B0 is downloaded and reproduced from the cloud member 410 to the client 400. If the next data block B1 is not downloaded before all of the first data block B0 is played in the client 400, the movie playback may be stopped. That is, the download of the next data block Bi + 1 must be completed before all of the data blocks Bi are all reproduced.

The main server 110 of the present invention monitors the data transfer rate of the cloud members 410-440, and if there is a cloud member whose data transfer rate is less than or equal to the reference value (for example, 300 KB / sec), other cloud members receive data. Control to transmit the block to the client (400).

In this embodiment, the plurality of cloud members 410-440 provide the file requested by the client 400 to the client 400 in units of data blocks, but the entire requested file is transmitted from the specific cloud member to the client. This may also apply to downloads to 400. In addition, a specific cloud member may be configured to transmit two or more data blocks to the client 400.

FIG. 5 is a flowchart illustrating a method of distributing files in a main server of the cloud computing network system shown in FIG. 1.

Referring to FIG. 5, the main server 110 receives state information from cloud members 151-153 (510). State information transmitted from the cloud members 151-153 to the main server 110 includes a maximum bandwidth, stored data size, available disk capacity, and CPU utilization. The member manager 113 in the main server 11 selects a member to which the file is distributed based on such information, and provides compensation for the member.

Main server 110 receives a file request from clients 141-143 (512). In this exemplary embodiment, the client 141 requests the main server 110 to download the file F1 stored in the storage server 120.

The client manager 111 of the main server 110 determines whether the file F1 requested by the client 141 is a hot file (514). Hot files refer to popular files that have been file download requests from a large number of clients or are currently being downloaded. For example, the client manager 111 may request that 100 clients request a download of the file F1 for 5 minutes, or that the file F1 is being downloaded to 20 clients at the same time, or the traffic is 10 GB or more. In this case, the file F1 can be classified as a hot file.

If the file F1 requested by the client 141 is not a hot file, the client manager 111 controls 540 to transmit the file F1 stored in the storage server 120 to the client 141.

If the client manager 111 determines that the file F1 requested by the client 141 is a hot file, the client manager 111 determines whether the file F1 is distributed and stored in the cloud members 151-153 ( 516). If the hot file is distributed and stored in the cloud members 151-153, the cloud manager 111 transmits information about the cloud member in which the file F1 is distributed and stored to the client 141 (522). Information about the cloud member is provided from the member manager 113. The client 141 refers to the cloud member information received from the client manager 111 to download a desired file F1 from the cloud members.

If the file F1 is not distributed to the cloud members 151-153, that is, if the file F1 is newly classified as a hot file, the client manager 111 is a master manager 112, a member manager ( 113) and the file distribution manager 114 request distributed storage for the file F1. The member manager 113 collects information about the cloud members 151-153, and provides the file distribution manager 114 with information about cloud members capable of transmitting a file according to the collected information.

The file distribution manager 114 downloads the file F1 from the storage server 120 and divides the downloaded file D_FILE into a plurality of data blocks B0-Bn. The file distribution manager 114 is transmitted to the divided data blocks B0-Bn (the cloud members 151 to 153, respectively. The file distribution manager 114 according to the cloud member information provided from the member manager 113. The data blocks B0-Bn are transmitted to the cloud members to which the file is distributed and stored in step 520. The file D_FILE depends on the size of the downloaded file D_FILE and the number of clients requesting the file D_FILE. ) May be kept as a single file or may be divided into a plurality of blocks instead of being divided into a plurality of blocks, and a file D_FILE or file blocks may be transmitted only to a specific cloud member or a plurality of cloud members 151. For example, if the demand for file F1 is high, it may be distributed to a larger number of client members, and if the demand for file F1 is low, a small number of files may be distributed. Can only be distributed to client members.

When the file transfer is completed by the file distribution manager 114 to the cloud members 151-153, the client manager 111 informs the client 141 about the cloud members in which the data blocks B-Bn are stored. Transmit (522). The client 141 downloads the data blocks B0-Bn by accessing the cloud members 151-153 through the network 130 according to the cloud member information provided from the client manager 111. Client 141 must have a client software program necessary to download files from cloud members 151-153. The client software program may be provided to the client 141 by the client manager 111 in advance.

The member manager 113 in the main server 110 receives data transmission rate information from the cloud members 151-153 that are transmitting the data blocks B0-Bn to the client 141 (524).

If there is a cloud member among the cloud members 151-153 whose data transfer rate is lower than the reference value, the member manager 113 replaces the cloud member having the low data transfer rate with a new cloud member (528). The reference value compared with the data transfer rate is, for example, 300 KB / sec. The new cloud member selected by the member manager 113 should store the same data block as the data block provided by the previous cloud member.

The client manager 111 of the main server 110 provides the client 141 with information about a new cloud member provided from the member manager 113 (530). The client 141 downloads the data block from the newly designated cloud member in response to the new cloud member information input from the main server 110.

According to the present invention as described above, when a plurality of download requests by the clients (141-143) are distributed to the cloud members (151-153) and stored, and when there is a file download request from the clients (141-143) By providing files through the cloud members 151-153 instead of the storage server 120, the limited network 130 resources can be efficiently used. In addition, even if some functional failure of the main server 110 or the storage server 120 may minimize the service providing failure.

In particular, when a large data file is downloaded from the plurality of cloud members 151-153, if a data transfer speed of a specific cloud member is lower than a reference value, the large file can be safely downloaded at high speed by changing to a new cloud member.

The present invention can be used for short periods of time, such as bug patches and upgrades of software, as well as TV broadcasting, cable broadcasting, movies, internet lectures, product advertisements, video broadcasting such as adult broadcasting, internet karaoke broadcasting, image caching, real-time music listening, and online game downloads. It can be used to improve the download quality of files in the field where the number of users explosively increases. According to the present invention as described above, it will be helpful to the industrial development by minimizing the cost burden of the enterprise and quickly delivering various contents and files without obstacles.

1 illustrates a cloud computing network system in accordance with a preferred embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of the main server shown in FIG. 1.

3 is a diagram conceptually illustrating a file transmitted to cloud members by the file distribution manager illustrated in FIG. 2.

4 conceptually illustrates a client downloading data blocks from four cloud members.

FIG. 5 is a flowchart illustrating a method of distributing files in a main server of the cloud computing network system shown in FIG. 1.

Claims (12)

In the file distribution method on the main server of the cloud computing network system including a main server: Receiving a file request from a client; Selecting cloud members to provide the requested file and providing the client with information about the selected cloud members; Receiving a data transfer rate from the cloud members; Determining whether to change for cloud members to provide the requested file according to a received data transfer rate; And And when the change of the cloud members to provide the requested file is determined, providing the changed information of the cloud members to the client. The method of claim 1, Determining whether the requested file is a hot file; Selecting cloud members to which a file stored in a storage server is distributed and stored when the requested file is a hot file; And The method of claim 1, further comprising transmitting the files stored in the storage server to the selected cloud members. The method of claim 2, Dividing a file stored in the storage server into a plurality of data blocks; The file transfer step, Transmitting each of the data blocks to the selected cloud members. The method of claim 3, wherein Determining whether to change the cloud members to provide the requested file, A method for distributing a file in a cloud computing network system, characterized in that for changing among the cloud members a cloud member whose data transfer rate is equal to or less than a reference value. The method of claim 3, wherein Providing the changed cloud member information to the client, When there is a cloud member whose data transfer rate is less than or equal to the reference value among the cloud members, providing the client with information about a cloud member that stores the same data block as that provided by the cloud member whose data transfer rate is equal to or less than the reference value. A file distribution method for a cloud computing network system, characterized in that. The method of claim 5, The reference value is a file distribution method of the cloud computing network system, characterized in that 300KB / sec. In a cloud computing network system that provides a service in response to a client request: A main server; A storage server for storing files to be provided to the client; And Including a cloud member for providing a file requested from the client; The main server selects cloud members to provide a file requested from the client, provides the client with information on the selected cloud members, receives a data transmission rate from the cloud members, and transmits the received data. And change the cloud member to provide the requested file according to the speed, and transmit the changed cloud member information to the client. The method of claim 7, wherein The main server, A client manager that manages the client and provides the client with information about cloud members storing files requested by the client; A member manager managing the cloud members; And A file distribution manager for downloading the file from the storage server when the file requested from the client is a hot file; The member manager provides cloud member information capable of storing the hot file to the file distribution manager; The file distribution manager transmits the downloaded file to the cloud members with reference to the cloud member information. The method of claim 8, The member manager, Receiving data transmission rate information from the cloud members that transmit the file to the client, and providing the changed cloud member information to the client manager when there is a cloud member whose received data transmission rate is lower than a reference value, And the client manager provides the changed cloud member information to the client. The method of claim 8, The file distribution manager, And dividing the file downloaded from the storage server into a plurality of data blocks, and transmitting the data blocks to the cloud members, respectively. 11. The method of claim 10, The member manager, When there is a cloud member among the cloud members whose data transfer rate is less than or equal to the reference value, the client manager provides information about a cloud member that stores the same data block as the data block provided by the cloud member whose data transfer rate is less than or equal to the reference value. Cloud computing network system, characterized in that. The method of claim 8, The file requested by the client is any one of an application program file, a game program file, a text data file, a document file, a picture file, a music file and a video file.

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