KR20110109610A - Cloud computing network system and file distribution method of the same - Google Patents

Abstract

A cloud computing network system providing a service in response to a request of a client of the present invention includes a main server, a storage server for storing files to be provided to the client, and a cloud member for providing a file requested from the client. do. 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 state information from each of the cloud members, and changes the state to off. When the number of cloud members is greater than the reference value, the cloud members to distribute the file are reselected, and the file is transmitted to the reselected cloud members.

Description

CLOUD COMPUTING NETWORK SYSTEM AND FILE DISTRIBUTION 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 can purchase large numbers of expensive computers that can act as servers to increase the number of users / customers and improve the quality of services. For example, a huge investment in network bandwidth is required. 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 download method that can minimize the transmission speed degradation by the cloud members when providing a large file from the cloud members to the client.

According to an aspect of the present invention for achieving the above object, a file distribution method on the main server in the cloud computing network system includes: a main server and a storage server, and provides a service in response to a file request from a client A method for distributing a file on the main server in a cloud computing network system, the method comprising: selecting cloud members to which a file stored in the storage server is distributed and stored when the requested file is a hot file; Transmitting a file stored in the storage server, selecting cloud members to provide the requested file, providing information about the selected cloud members to the client, and providing status information from the cloud members. Receiving and storing the file Reselecting cloud members to distribute files stored in the storage server when the number of cloud members changed to off states among cloud members is greater than a reference value, and transmitting the files stored on the storage server to the reselected cloud members. Steps.

In this embodiment, the method further comprises: determining whether the requested file is a hot file;

Selecting cloud members to which the file stored in the storage server is distributed and stored when the requested file is a hot file, and transmitting the file stored in the storage server to the selected cloud members.

In this embodiment, among the cloud members who are storing the file, cloud members whose state information is not received are considered to be in the off state.

In this embodiment, among the cloud members who are storing the file, the cloud member whose maximum bandwidth is lower than the minimum allowable value is regarded as the off state.

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 state information from each of the cloud members, and changes the state to off. When the number of cloud members is greater than the reference value, the cloud members to distribute the file are reselected, and the file is transmitted to the reselected cloud members.

In this embodiment, the main server regards the cloud member in which the state information is not received among the cloud members storing the file as the off state.

In this embodiment, the main server regards the cloud member whose maximum bandwidth is lower than the minimum allowable value among the cloud members storing the file as the off state.

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 hot file. The member manager receives status information from each of the cloud members, and provides the status information to the file distribution manager when the number of cloud members changed to an off state is greater than a reference value, and the file distribution manager distributes the file. Reselect cloud members and send the file to the reselected cloud members.

In this embodiment, the file distribution manager provides the client manager with information about cloud members in which the file is stored, and the client manager responds to the client's request when the cloud member is reselected. Provides information about the reselected cloud member to the client.

In this embodiment, the member manager periodically receives the status information from the cloud members.

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 addition, when a large number of cloud members are turned off or not in a normal operation state, the hot files are distributed again and stored to satisfy the data download speed required by the client.

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 illustrating a state change of cloud members by way of example.
4 is a flowchart illustrating a method in which a main server distributes files according to a request of a client of the cloud computing network system illustrated in FIG. 1.

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 to which such a CCN is applied and a file download 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 151-154. . The main server 110, the storage server 120, the clients 141-143, and the cloud members 151-154 are interconnected through 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 151-152 in order to efficiently use the limited resources of the network 130, and the clients 141-143. Instead of the storage server 120 controls to download files from the cloud members (151-152).

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 the storage server 120 or the cloud members 151-152 under the control of the main server 110. 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 151-152. And the client software program is executed by a processor (not shown).

The cloud members 151-154 are connected to the main server 110 via the network 130 using a personal computer. The cloud members 151-154 download files stored in the storage server 120 under the control of the main server 110, and transmit the files to the clients 141-143.

Some of the cloud members 151-154 may be configured as storage devices that are independent of a personal computer, that is, home storage. Home storage includes a processor, memory for storing software required for the operation of the processor, a hard disk drive for storing files, an input / output interface, and the like. These home storage stores the file provided from the main server 110 in response to the control of the main server 110, and provides the stored file in response to the requests of the clients (141-143).

FIG. 2 is a diagram illustrating a configuration of the main server shown 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 151-152 if the file requested from the clients 141-143 is a hot file. Control 113.

The member manager 113 manages cloud members 151-154. That is, the cloud members 151-154 are in a power-on state and connected to the network 130, and periodically collect information on cloud members who 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 transmits the stored hot file to the cloud members 151-154. The client manager 111 transmits information about the cloud members 151-154 in which the file requested by the clients 141-143 is stored, to the clients 141-143. Information about the cloud members 151-154 in which the files requested by the clients 141-143 are stored is provided from the file distribution manager 114 to the client manager 111.

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 illustrating a state change of cloud members by way of example.

Referring to FIG. 3, a plurality of cloud members 151-154 are connected to the member manager 113 and the file distribution manager 114. The plurality of cloud members 151-154 may be connected to the member manager 113 and the file distribution manager 114 via a communication network. Each of the plurality of cloud members 151-154 may change from an on state to an off state or from an off state to an on state under the control of a user. Here, the on state refers to a normal operating state in which each of the cloud members 151-154 is supplied with power and can normally communicate with the member manager 113 and the file distribution manager 114, and the off state refers to the cloud members. It refers to an inoperable state in which the power of the (151-154) is cut off or cannot communicate normally with the member manager 113 and the file distribution manager 114 for some reason. The number of cloud members 151-154 in a normal operating state must be sufficiently secured to provide a service to a client. However, if a large number of cloud members storing hot files are turned off at the same time, there may be a problem with the service serving the file. For example, a problem may occur such that a file download rate from the cloud members 151-154 to the client is slow, or a file transfer from the cloud members 151-154 to the client is stopped.

The member manager 113 periodically collects state information of the cloud members 151-154, and provides the collected state information to the file distribution manager 114. The file distribution manager 114 determines whether to retransmit the file to the cloud members 151-555 according to the state information of the cloud members 151-154. For example, if the number of cloud members that are turned off among the cloud members storing a specific file is larger than a reference value, the file distribution manager 114 may store the file from the storage server 120 through the master manager 112 shown in FIG. 2. Download the file and resend the downloaded file to the cloud members 151-555.

After the file retransmission is completed, the client manager 111 illustrated in FIG. 2 transmits information about cloud members 151-154 in which the file is stored to a new client requesting a file among the clients 141-143.

4 is a flowchart illustrating a method in which a main server distributes files according to a request of a client of the cloud computing network system illustrated in FIG. 1.

4, the main server 110 receives state information from cloud members 151-154 (410). State information transmitted from the cloud members 151-154 to the main server 110 includes a maximum bandwidth, a stored data size, an available disk capacity, and the like. The member manager 113 in the main server 110 selects a member to which a file is distributed based on such information, and provides compensation for the member.

Main server 110 receives a file request from clients 141-143 (412). 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 (414). 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 the file F1 stored in the storage server 120 to be transmitted to the client 141 (440).

If it is determined 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 151-154 ( 416). If the hot file is already distributed and stored in the cloud members 151-154, the cloud manager 111 transmits the information about the cloud member in which the file F1 is distributed and stored (422) to the client 141. 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 151-154, 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 151-154, 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 (418). The file distribution manager 114 transmits the divided data blocks B0-Bn to the cloud members 151-154, respectively. The file distribution manager 114 allows the file D_FILE to be distributed and stored efficiently to the cloud members 151-154 and to improve the transfer speed from the cloud members 151-154 to the clients 141-143. The file D_FILE may be divided into a plurality of data blocks B0-Bn. In this case, the file D_FILE may be maintained as a single file or divided into a plurality of blocks, depending on the size of the file D_FILE and the number of clients requesting the file D_FILE. .

The file distribution manager 114 transmits the data blocks B0-Bn to the cloud members whose files are to be distributed and stored according to the cloud member information provided from the member manager 113 (420). In addition, the file D_FILE or the file blocks BO-Bn may be transmitted only to a specific cloud member or distributed to some or all of the plurality of cloud members 151-154. For example, if the demand for file F1 is high, file blocks B0-Bn are distributed and stored to a larger number of client members. If the demand for file F1 is low, file blocks B0-Bn are stored. Can be distributed to only a small number of client members.

When the file transfer is completed by the file distribution manager 114 to the cloud members 151-152, the client manager 111 informs the client 141 about the cloud members in which the data blocks B0-Bn are stored. Transmit (422). The client 141 downloads the data blocks B0-Bn by connecting to the cloud members 151-154 through the network 130 according to the cloud member information provided from the client manager 111. Client 141 must have a client software program needed to download a file from cloud members 151-154. 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 the state information from the cloud members 151-154 (424). As described above, state information includes maximum bandwidth, stored data size, available disk capacity, and the like. The member manager 113 considers that a cloud member for which state information is not received is in an off state. The member manager 113 considers it to be off even for cloud members whose maximum bandwidth is lower than the minimum allowable value.

The member manager 113 determines whether the number of the cloud members storing the file D_FILE changed to the off state is greater than the reference value (426). For example, the reference value may be set to 10% of the number of cloud members storing the file D_FILE. If the number of cloud members storing the file D_FILE is 30 and the number of cloud members changed from the on state to the off state is 2, the member manager 113 transfers a file sufficiently normal by the remaining on-cloud members. I think the service is available. If the number of the cloud members storing the file D_FILE changed to the off state is 5 which is greater than the reference value, the member manager 113 signals the request for the file retransmission and the state of the cloud members 151-154. The information is sent to the file distribution manager 114.

The file distribution manager 114 may reselect the file distribution target cloud members with reference to the state information of the cloud members 151-154 (428). The file distribution manager 114 transmits the file to the cloud members in the on state instead of the cloud members changed to the off state (430). The file distribution manager 114 provides the client manager 111 with information about cloud members in which the blocks B0-Bn of the file D_FILE are stored.

Subsequently, when the file F1 download request is received by the clients 141-143, as shown in step 412, the client manager 111 stores blocks B0-Bn of the file D_FILE in step 422. Information about cloud members may be provided to clients 141-143.

According to the present invention as described above, when the download request by the clients (141-143) is a lot of files distributed to the cloud members (151-152) and stored, and when there is a file download request from the clients (141-143) By providing files through the cloud members 151-152 instead of the storage server 120, it is possible to efficiently use the limited network 130 resources. In addition, when a large number of cloud members are changed to the off state or the non-normal operation state among the cloud members 151-154, the hot file may be distributed again and stored to satisfy the data download speed required by the client 141.

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.

100: cloud computing network system
110: main server 120: storage server
120: network 141-143: client
151-154: Cloud Member 111: Client Manager
112: master manager 113: member manager
114: File Distribution Manager

Claims (10)

A method for distributing a file on a main server in a cloud computing network system including a main server and a storage server and providing a service in response to a client's file request:
Selecting cloud members whose files stored in the storage server are to be distributed and stored when the requested file is a hot file;
Transmitting a file stored in the storage server to selected cloud members;
Selecting cloud members to provide the requested file and providing information about the selected cloud members to the client;
Receiving status information from the cloud members;
Reselecting cloud members for distributing a file stored in the storage server when the number of cloud members changed to an off state among the cloud members storing the file is larger than a reference value; And
And transmitting a file stored in the storage server to the reselected cloud member. The method of claim 1,
Determining whether the requested file is a hot file;
Selecting cloud members to which the file stored in the storage server is distributed and stored when the requested file is a hot file; And
And transmitting the file stored in the storage server to the selected cloud members. The method of claim 1,
A cloud member of the cloud members storing the file, in which the state information is not received, is regarded as the off state. The method of claim 1,
And among the cloud members storing the file, cloud members whose maximum bandwidth is lower than a minimum allowable value are regarded as the off state. 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 state information from each of the cloud members, and changes the state to off. And reselecting cloud members to distribute the file when the number of cloud members is greater than a reference value, and transmitting the file to the reselected cloud members. The method of claim 5, wherein
The main server,
The cloud computing network system, characterized in that the cloud member that stores the file is not received the state of the cloud member is stored as the off state. The method of claim 5, wherein
The main server,
The cloud computing network system, characterized in that the cloud member of the cloud members storing the file, the maximum bandwidth is lower than the minimum allowable value to be considered as the off state. The method of claim 5, 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 receives status information from each of the cloud members, and provides the status information to the file distribution manager when the number of cloud members changed to an off state is greater than a reference value.
And the file distribution manager reselects cloud members to distribute the file and transmits the file to the reselected cloud members. The method of claim 8,
The file distribution manager provides the client manager with information about cloud members in which the file is stored,
The client manager,
When the cloud member is reselected,
And provide the client with information about the reselected cloud member in response to a request of the client. The method of claim 8,
The member manager,
And periodically receiving the status information from the cloud members.

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