KR20050088642A - Apparatus and method for contents distribution according to the contents hit ratio and method of contents service using it - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a content distribution device according to a content hit rate, a method thereof, a content providing method using the same, and a computer-readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

According to the present invention, in a multi-server group structure, content having a low content hit rate is located in a library server group of a central node, and content with a high content hit rate is distributed according to a hit rate such that a content node is located in a main server group and a local node of a central node. Thus, a computer-readable recording medium recording a content distribution device according to the content hit rate and a method and a program for realizing the method for efficiently utilizing a network, a server, and a storage in providing a library-on-demand video service. To provide the purpose.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided a content distribution method based on a content hit ratio, the content input / storing unit receiving and storing content to be distributed and a content distribution work command; Receiving, by the content delivery control unit, the content distribution operation command from the content input / storage unit and delivering the command to the first content distribution management unit; If the first content distribution management unit transmits the content distribution operation command to the second content distribution management unit because the content according to the content distribution operation command is the content of the library server group with low hit rate, the second content distribution management unit transmits the content of the corresponding library server group. Downloading and storing the content from the content input / storage unit and notifying the content delivery control unit of completion of content distribution work; Since the content according to the content distribution job command is the main server group content, the first content distribution management unit downloads and stores the content input / storage content input / storage group content and distributes the content to the content delivery control unit. Notifying completion; And when the content delivery control unit transmits a content distribution operation command to a third content distribution management unit as the distribution of the main server group content having a high hit rate is completed in the first content distribution management unit, the third content distribution management unit is configured to perform the second content distribution operation unit. And downloading and storing the corresponding main server group content from the content distribution management unit, and notifying the content delivery control unit of completion of content distribution work.

4. Important uses of the invention

The present invention is used for a video service system on demand.

Description

Apparatus and method for contents distribution according to the contents hit ratio and method of contents service using it}

The present invention relates to a content distribution device according to the content hit rate, a method, a method of providing the content using the same, and a computer-readable recording medium recording a program for realizing the method, and more specifically, in a multi-server group structure When content with low hit rate is located in library server group of central node, and content with high content rate is distributed according to hit rate to be located in main server group and local node of central node. The present invention relates to a content distribution device according to a content hit ratio, a method for providing a content using the same, and a computer-readable recording medium having recorded thereon a program for realizing the method for efficiently utilizing a network, a server, and a storage.

Conventional video-on-demand service system improves network efficiency by dividing into central node and local node. However, in the case of library-on-demand video service having a large number of contents, the central node is composed of one media server group. Low hit rate content is also stored in the storage of all the central node and local node has a problem that can not utilize the storage efficiently.

In addition, in the content distribution method of the on-demand video service system, the network and the server are inefficient due to the bandwidth limitation between the server and the storage, and there is a problem that it is impossible to apply the differential number of servers according to the hit ratio of the content.

The present invention has been proposed to solve the above problems, in the multi-server group structure, the content with low content hit rate is located in the library server group of the central node, and the content with high content hit rate is the main server group of the central node. And distributing the content according to the hit ratio so as to be located at the local node, thereby realizing the content distribution apparatus and method and the method according to the content hit ratio for efficiently utilizing the network, server, and storage when providing the on-demand video service in the form of a library. The object of the present invention is to provide a computer-readable recording medium having recorded thereon a program.

The present invention also provides a content distribution apparatus according to the content hit rate and a method for providing a content according to the content hit rate and a program for realizing the method for providing the content according to the content hit rate distributed using the method. Another object is to provide a computer readable recording medium.

In accordance with an aspect of the present invention, there is provided a content distribution device according to a content hit ratio, comprising: input / storing means for receiving and storing content to be distributed and a content distribution work command; Content delivery control means for transmitting a content distribution operation command from the input / storage means to a first content distribution management means and controlling to deliver the content to the local node according to the delivery status information; In accordance with the content distribution operation command from the content delivery control means, the content distribution operation command for the library server group content having a low content hit rate is transmitted to the second content distribution management means, and the distribution of the main server group content with a high content hit rate is managed. The first content distribution managing means for performing the above; The second content distribution management means for managing distribution of library server group content having a low content hit rate in accordance with a content distribution operation command from the first content distribution management means; And third content for managing distribution of main server group content having a high content hit rate by receiving main server group content from the first content distribution managing means according to content delivery control from the content delivery control means to the local node. Distribution control measures.

In addition, the method of the present invention, in the content distribution method according to the content hit rate, the content input / storage unit receives the content to be distributed and the content distribution operation command to store; Receiving, by the content delivery control unit, the content distribution operation command from the content input / storage unit and delivering the command to the first content distribution management unit; If the first content distribution management unit transmits the content distribution operation command to the second content distribution management unit because the content according to the content distribution operation command is the content of the library server group with low hit rate, the second content distribution management unit transmits the content of the corresponding library server group. Downloading and storing the content from the content input / storage unit and notifying the content delivery control unit of completion of content distribution work; Since the content according to the content distribution job command is the main server group content, the first content distribution management unit downloads and stores the content input / storage content input / storage group content and distributes the content to the content delivery control unit. Notifying completion; And when the content delivery control unit transmits a content distribution operation command to a third content distribution management unit as the distribution of the main server group content having a high hit rate is completed in the first content distribution management unit, the third content distribution management unit is configured to perform the second content distribution operation unit. And downloading and storing the corresponding main server group content from the content distribution management unit and notifying the content delivery control unit of completion of the content distribution job.

On the other hand, the present invention, in order to distribute the content in accordance with the content hit rate, a content distribution device having a processor, a function for receiving and storing the content to be distributed and the content distribution operation command to the content input / storage unit; A function of the content delivery control unit receiving the content distribution operation command from the content input / storage unit and delivering the content distribution operation command to a first content distribution management unit; If the first content distribution management unit transmits the content distribution operation command to the second content distribution management unit because the content according to the content distribution operation command is the content of the library server group with low hit rate, the second content distribution management unit transmits the content of the corresponding library server group. Downloading and storing the content from the content input / storage unit and notifying the content delivery control unit of completion of content distribution work; Since the content according to the content distribution job command is the main server group content, the first content distribution management unit downloads and stores the content input / storage content input / storage group content and distributes the content to the content delivery control unit. The ability to notify completion; And when the content delivery control unit transmits a content distribution operation command to a third content distribution management unit as the distribution of the main server group content having a high hit rate is completed in the first content distribution management unit, the third content distribution management unit is configured to perform the second content distribution operation unit. A computer-readable recording medium having recorded thereon a program for realizing a function of downloading and storing contents of a main server group from a content distribution management unit and notifying the content delivery control unit of completion of a content distribution operation.

On the other hand, the method of the present invention for achieving the other object, the content providing method according to the content hit rate, the content type checking step of confirming the type of content requested in response to the video content on demand request from the user terminal; As a result of the checking, as the requested content is content of a main server group having a high hit rate, an IP of the user terminal is analyzed to attempt to connect the user terminal with the corresponding local node, and to determine whether the connection is successful. Determination step; As a result of the determination in the first determination step, as the connection between the user terminal and the local node is successful, the requested content is delivered to the user terminal, and the user terminal fails to connect with the local node. A second determination step of attempting to connect the terminal to the central node main server group and determining whether the connection is successful; As a result of the determination in the second determination step, as the connection between the user terminal and the central node main server group succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node main server group fails. Transmitting a failure message to the user terminal; A third determination step of attempting to connect the user terminal with the central node library server group as the requested content is content of a library server group having a low hit rate, and determining whether the connection is successful; And as a result of the determination in the third determination step, as the connection between the user terminal and the central node library server group is successful, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node library server group is performed. And transmitting a failure message to the user terminal as the failure occurs.

On the other hand, the present invention, in order to provide content according to the content hit rate, on-demand video system having a processor, content type confirmation function for confirming the type of content requested in response to a video content request on demand from the user terminal; As a result of the checking, as the requested content is content of a main server group having a high hit rate, an IP of the user terminal is analyzed to attempt to connect the user terminal with the corresponding local node, and to determine whether the connection is successful. Judgment function; As a result of the determination in the first determination function, as the connection between the user terminal and the corresponding local node succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the corresponding local node fails. A second determination function for attempting to connect the user terminal to the central node main server group and determining whether the connection is successful; As a result of the determination in the second determination function, as the connection between the user terminal and the central node main server group succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node main server group is established. Transmitting a failure message to the user terminal according to the failure; A third determination function of attempting to connect the user terminal to the central node library server group as the requested content is content of a library server group having a low hit rate, and determining whether the connection is successful; And as a result of the determination in the third determination function, as the connection between the user terminal and the central node library server group succeeds, deliver the requested content to the user terminal, and connect the user terminal with the central node library server group. In response to the failure, a computer-readable recording medium having recorded thereon a program for realizing a function of delivering a failure message to the user terminal is provided.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an embodiment of an on-demand video service system having a multi-media server group structure to which the present invention is applied.

As shown in FIG. 1, an on-demand video service system having a multi-media server group structure to which the present invention is applied includes a central node 14 and a local node 15, wherein the central node 14 is a main server group. And a plurality of media server groups including a library server group. One media server group 13 is composed of a media server 11 and a storage 12, which is connected to the user terminal 17 through the Internet (16).

The local node 15 is composed of a single media server group as a whole node, the central node 14 may be composed of a plurality of media server group, the main server group of the central node 14 is the local node of the local node (15) It exists for backup, and the library server group of the central node 14 stores relatively low hit rate content according to the hit rate.

Accordingly, the central node 14 may differentiate the number of servers of the plurality of library server groups according to the content hit ratio. In addition, the storage 12 may be efficiently utilized because the content having a relatively low hit rate is not stored in all the storages 12.

2 is a configuration diagram of an embodiment of a content distribution device based on a content hit ratio according to the present invention.

As shown in FIG. 2, the content distribution device according to the content hit ratio according to the present invention includes a content input / storage unit 21 for receiving and storing content to be distributed and a content distribution work command, and the content input / storage unit. Content delivery control unit 22 for transmitting the content distribution operation command from the 21 to the content distribution management unit 23 of the central node main server group, and controls to deliver the content to the local node according to the delivery status information, the content In accordance with the content distribution job command from the delivery control unit 22, the library server group with low content hit rate is delivered to the content distribution management unit 24 of the central node library server group, and the main server group with high content hit rate is obtained. Content distribution management unit 23 of the central node main server group for managing the distribution of content, content of the central node main server group The content distribution management unit 24 and the content delivery control unit 22 of the central node library server group for managing the distribution of the library server group content having a low content hit rate according to the content distribution operation command from the server distribution management unit 23. Content distribution of the local node for managing the distribution of the main server group content having a high content hit rate by receiving the main server group content from the content distribution management unit 23 of the central node main server group according to the content delivery control to the local node The management unit 25 is included.

The content input / storage unit 21 stores, in the command database 213, a job database 211 for receiving an external content distribution job command and a content distribution job command received from the job database 211. Command unit 212 for delivering to the content delivery control unit 22, the command database 213 for storing the content distribution job command received from the command unit 212, for receiving and storing the content to be distributed And a status updater 215 for receiving the status information from the content storage unit 214 and the status information management unit 225 of the content delivery control unit 22 and updating the command database 213.

The content distribution control unit 22, a content delivery management unit 221 for receiving a content distribution operation command from the command unit 212, a content delivery operation for receiving a content distribution operation command from the content delivery management unit 221. The queue 222 receives a content distribution job command from the content delivery job queue 222 and delivers the content distribution job command to the central node delivery management unit 231 of the content distribution management unit 23 of the central node main server group. A content distribution unit 224 for delivering a content distribution operation command to the regional node delivery management unit 251 of the content distribution management unit 25 of the local node according to the state information of the content distribution operation of the main server group from 225; Live of the main server group task management unit 233 of the content distribution management unit 23 of the central node main server group or the content distribution management unit 24 of the central node library server group Receiving the status information of the content distribution job from the reserver group job management unit 242 or the local node job management unit 253 of the content node management unit 25 of the local node to update the delivery status database 223 and input the content. When the data is transmitted to the status update unit 215 of the storage unit 21, the state distribution information of the content distribution job from the content distribution management unit 23 of the central node main server group is transmitted to the content distribution unit 224. The state information manager 225 and the delivery state database 223 for storing the state information of the content distribution job.

The content distribution management unit 23 of the central node main server group receives the content distribution work command from the content distribution unit 224, and according to the type of content, the content to be distributed is the main server group content having a high content hit rate. Deliver the content deployment job command to the main server group job queue (232), and send the content distribution job command to the content distribution management unit (24) of the central node library server group because the content to be distributed is the library server group content with low content hit rate. Central node delivery management unit 231 for delivering, the content distribution work from the main server group work queue 232, the main server group work queue 232 for receiving the content distribution work command from the central node delivery management unit 231 The main server group content storage unit 23 receives the work command and downloads the corresponding main server group content stored in the content storage unit 214. 4) to store the main server group content downloaded from the main server group task management unit 233 and the content storage unit 214 to notify the state information management unit 225 that the content distribution job is completed. The main server group content storage unit 234 is included.

The content distribution management unit 24 of the central node library server group is a library server group work queue 241 for receiving a content distribution work command for the library server group content having a low content hit rate from the central node delivery management unit 231. Receiving a content distribution work command from the library server group work queue 241, and downloads the corresponding library server group content stored in the content storage unit 214 and stores it in the library server group content storage unit 243, The library server group content storage for storing the library server group task management unit 242 and the library server group content downloaded from the content storage unit 214 to notify the state information management unit 225 that the content distribution job is completed. A portion 243 is included.

The local node content distribution management unit 25 receives a content distribution work command from the content distribution unit 224 and delivers it to the local node work queue 252 and delivers it to the local node work queue 252, and the local node delivery management unit. The local node work queue 252 for receiving a content distribution work command from 251 and a content distribution work command from the local node work queue 252 are stored in the main server group content storage unit 234. The local node task management unit 253 for downloading the main server group content having a high content hit rate and storing the contents in the local node content storage unit 254 and notifying the state information manager 225 of the completion of the content distribution operation. And the local node content storage unit 254 for storing the main server group content downloaded from the main server group content storage unit 234.

3 is a diagram illustrating an embodiment of a content distribution method based on a content hit ratio according to the present invention.

First, when the job database 211 receives a content distribution job command (301), the job database 211 transfers the content distribution job command to the command unit 212 (302), and thus the command unit 212 Stores the content distribution work command in the command database 213.

Thereafter, the command unit 212 registers the content distribution operation command with the content delivery management unit 221 of the content delivery control unit 22 (304). Then, the content delivery work queue 223 receives the content distribution work command from the content delivery management unit 221 (305), and delivers it to the content distribution unit 224 (306).

Then, the content distribution unit 224 transmits the content distribution operation command to the central node delivery management unit 231 of the content distribution management unit 23 of the central node main server group (307).

Here, the central node delivery management unit 231 is a library server group work queue 241 of the content distribution management unit 24 of the library server group when the content according to the content distribution job command is a library server group content having a low content hit ratio. The content distribution work command is transmitted (308), and the library server group work management unit 242 receives the content distribution work command from the library server group work queue 241 (309).

Accordingly, the library server group task management unit 242 downloads the library server group content from the content storage unit 214 of the content input / store unit 21 (310), and downloads the library server group content storage unit 243 to the library server group content management unit 243. The received library server group content is stored (311).

Thereafter, the library server group task manager 242 notifies the task result to the state information manager 225 of the content delivery controller 22 (312). Then, the state information management unit 225 stores the end of the job in the delivery state database 223 (313), and also notifies the state update unit 215 of the content input / storage unit 21 of the end of the job (314). ).

Accordingly, as the status updater 215 updates the command database 213 (315), content distribution to the library server group is completed.

On the other hand, the central node delivery management unit 231 is the main server group work queue 232 of the content distribution management unit 23 of the main server group, when the content according to the content distribution job command is the main server group content with a high content hit rate; The content distribution work command is transferred to the content distribution work command (316), and accordingly, the main server group work management unit 233 receives the content distribution work command from the main server group work queue 232 (317).

Accordingly, the main server group task management unit 233 downloads the main server group content from the content storage unit 214 of the content input / storage unit 318 (318), and downloads the main server group content storage unit 234 to the main server group content storage unit 234. The received main server group content is stored (319).

Thereafter, the main server group operation management unit 233 notifies the operation result to the state information management unit 225 of the content delivery control unit 22 (320). Then, the state information management unit 225 transmits the work result to the content distribution unit 224 (321), and stores the distribution of content to the main server group content storage unit 234 in the delivery state database 223 is completed ( 322).

The content distribution unit 224 receives the completion of content distribution to the main server group content storage unit 244, and instructs the local node delivery management unit 251 to download the central node main server group content to the local node ( 323).

Then, the local node delivery manager 251 transmits the content distribution work command to the local node work queue 252 (324), and accordingly, the local node work manager 253 from the local node work queue 252. In operation 325, the content distribution task command is received.

Accordingly, the regional node task management unit 253 downloads the main server group content from the main server group content storage unit 234 of the central node main server group content distribution management unit 23 (326), and then the local node content storage unit ( In step 254, the downloaded main server group content is stored (327).

Thereafter, the local node task manager 253 notifies the task result to the state information manager 225 of the content delivery controller 22 (328). Then, the state information management unit 225 stores (329) the completion of the job in the delivery status database 223, and also notifies the state update unit 215 of the content input / storage unit 21 that the job is finished (330). ).

Accordingly, as the status updater 215 updates the command database 213 (331), content distribution to the main server group and the local node is completed.

4 is a flowchart illustrating a content providing method according to a content hit ratio according to the present invention.

First, upon receiving the on-demand video content request from the user terminal 17 (401), the application server (not shown in the drawing) determines whether the requested content is main server group content with high hit rate or low library server group content with low hit rate. Confirm (402).

As a result of the check 402, if the requested content is the main server group content, by analyzing the IP (IP) of the user terminal 17 (403), and attempts to connect the user terminal 17 and the local node and 404, it is determined whether the connection is successful (405).

As a result of the determination 405, if the user terminal 17 is successfully connected to the local node, the requested video is delivered to the user terminal 17 to play the video on demand (406).

On the other hand, if the determination result 405, the connection between the user terminal 17 and the local node failed, attempts to connect the user terminal 17 and the central node main server group (407), the connection is successful It is determined whether or not (408).

As a result of the determination 408, if the connection between the user terminal 17 and the central node main server group is successful, the requested video is delivered to the user terminal 17 so that the video on demand is played (406).

On the other hand, if the connection between the user terminal 17 and the central node main server group has failed, the determination result 408, the on-demand video playback failure message is delivered to the user terminal 17 to be displayed (409).

On the other hand, if the check result 402, the requested content is the library server group content, and attempts to connect the user terminal 17 and the central node library server group (410), and determines whether the connection was successful (411) ).

As a result of the determination 411, if the connection between the user terminal 17 and the central node library server group is successful, the requested video is delivered to the user terminal 17 to play the video on demand (406).

As a result of the determination 411, if the connection between the user terminal 17 and the central node library server group fails, the on-demand video reproduction failure message is transmitted to the user terminal 17 to be displayed (409).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

In the present invention as described above, in the multi-server group structure, the content hit rate is low to be located in the library server group of the central node, the content hit rate is high content is located in the main server group and local node of the central node according to the hit rate By distributing the content, it is possible to efficiently utilize the network, server, and storage when providing the on-demand video service in the form of a library.

In addition, the present invention, by distributing the content according to the hit ratio in the multi-server group structure, it is possible not only to maximize the efficiency of the server by optimizing the ratio of the server and storage, but also apply the number of servers according to the hit rate of the content differentially Therefore, it is possible to operate the elastic server, thereby reducing the operating cost.

In addition, the present invention has an effect of efficiently utilizing the storage by providing the content distribution device according to the content hit ratio and the content distributed according to the content hit ratio.

1 is a configuration diagram of an embodiment of an on-demand video service system having a multi-media server group structure to which the present invention is applied.

Figure 2 is a configuration diagram of an embodiment of a content distribution device according to the content hit ratio according to the present invention.

3 is a diagram illustrating an embodiment of a content distribution method according to a content hit ratio according to the present invention;

4 is a flowchart illustrating a content providing method according to a content hit ratio according to the present invention.

* Explanation of symbols for the main parts of the drawings

21: Content input / storage 22: Content delivery control

23: Content distribution management unit of the central node main server group

24: Content distribution management unit of central node library server group

25: Content distribution management department of local node

211: job database 212: command

213: command database 214: content storage

215: status update unit 221: content delivery management unit

222: Content Delivery Job Queue 223: Delivery Status Database

224: content distribution unit 225: status information management unit

231: central node delivery management unit 232: the main server group work queue

233: main server group operation management unit 234: main server group content storage unit

241: library server group job queue 242: library server group job management unit

243: library server group content storage unit

251: Local node delivery management unit 252: Local node work queue

253: local node task management unit 254: local node content storage unit

Claims (10)

In the content distribution device according to the content hit rate, Input / storing means for receiving and storing content to be distributed and a content distribution work command; Content delivery control means for transmitting a content distribution operation command from the input / storage means to a first content distribution management means and controlling to deliver the content to the local node according to the delivery status information; In accordance with the content distribution operation command from the content delivery control means, the content distribution operation command for the library server group content having a low content hit rate is transmitted to the second content distribution management means, and the distribution of the main server group content with a high content hit rate is managed. The first content distribution managing means for performing the above; The second content distribution management means for managing distribution of library server group content having a low content hit rate in accordance with a content distribution operation command from the first content distribution management means; And Third content distribution for receiving distribution of the main server group content from the first content distribution management means according to the content delivery control from the content delivery control means to the local node to manage distribution of the main server group content having a high content hit rate; Management Content distribution device according to the content hit rate, including. The method of claim 1, The input / storage means, A job database for receiving a content distribution job command from an external source; A command unit for storing a content distribution work command received from the work database in a command database and delivering the command to the content delivery control means; The command database for storing a content distribution work command received from the command unit; A content storage unit for receiving and storing content to be distributed; And A status updater for updating the command database by receiving status information from the content delivery control means Content distribution device according to the content hit ratio comprising a. The method of claim 2, The content distribution control means, A content delivery management unit for receiving a content distribution work command from the command unit; A content delivery work unit for receiving a content distribution work command from the content delivery management unit; Receives a content distribution operation command from the content delivery operation unit and delivers it to the first content distribution management unit, and transmits the content distribution operation unit to the third content distribution management unit according to the state information of the content distribution operation of the main server group content from the state information management unit. A content distribution unit for delivering a content distribution work command to the local node; Receives the status information of the content distribution job from the first content distribution management means or the second content distribution management means or the third content distribution management means to update a delivery status database and transmit the status information to the status updater, The state information management unit for transferring the state information of the content distribution job from the content distribution management means to the content distribution unit; And The delivery status database for storing state information of a content distribution job Content distribution device according to the content hit ratio comprising a. The method according to any one of claims 1 to 3, The first content distribution management means, The content distribution work command is received from the content delivery control means, and the content to be distributed according to the type of content is the main server group content having a high content hit rate, so the content distribution work command is delivered to the main server group work unit. A central node delivery manager for delivering a content distribution work command to the second content distribution management means according to the content of the library server group having a low content hit rate; The main server group operation unit for receiving a content distribution operation command from the central node delivery management unit; Receives a content distribution job command from the main server group work unit, downloads the corresponding main server group content stored in the input / storage unit, and stores the main server group content in the main server group content storage unit, and completes the content distribution job. A main server group task management unit for notifying by means; And The main server group content storage unit for storing the main server group content downloaded from the input / storage means Content distribution device according to the content hit ratio comprising a. The method of claim 4, wherein The second content distribution management means, A library server group operation unit for receiving a content distribution work command for the library server group content having a low content hit rate from the central node delivery managing unit; Receives a content distribution job command from the library server group work unit, downloads the corresponding library server group content stored in the content storage unit of the input / storage unit, stores the content in the library server group content storage unit, and completes the content distribution job. A library server group operation manager for notifying the status information manager of the input / storage means; And The library server group content storage unit for storing the library server group content downloaded from the content storage unit of the input / storage means Content distribution device according to the content hit ratio comprising a. The method of claim 5, The third content distribution management means, A local node delivery manager for receiving a content distribution work command from the content distribution unit of the content delivery control unit and delivering the command to the local node work unit; The local node work unit for receiving a content distribution work command from the local node delivery manager; Receives a content distribution work command from the local node work unit, downloads the corresponding main server group content stored in the main server group content storage unit, stores the main server group content in the local node content storage unit, and inputs / stores the completion of the content distribution task. A local node job manager for notifying the status information manager of the means; And The local node content storage unit for storing the main server group content downloaded from the main server group content storage unit. Content distribution device according to the content hit ratio comprising a. In the content distribution method according to the content hit rate, A content input / storing unit receiving and storing content to be distributed and a content distribution work command; Receiving, by the content delivery control unit, the content distribution operation command from the content input / storage unit and delivering the command to the first content distribution management unit; If the first content distribution management unit transmits the content distribution operation command to the second content distribution management unit because the content according to the content distribution operation command is the content of the library server group with low hit rate, the second content distribution management unit transmits the content of the corresponding library server group. Downloading and storing the content from the content input / storage unit and notifying the content delivery control unit of completion of content distribution work; Since the content according to the content distribution job command is the main server group content having a high hit rate, the first content distribution manager downloads and stores the corresponding main server group content from the content input / storage unit and distributes the content to the content delivery control unit. Notifying completion; And As the first content distribution management unit completes the distribution of the main server group content having a high hit rate, when the content delivery control unit transmits a content distribution operation command to the third content distribution management unit, the third content distribution management unit transmits the second content. Downloading and storing the corresponding main server group content from the distribution management unit and notifying the content delivery control unit of completion of content distribution work; Content distribution method according to the content hit ratio comprising a. In the content providing method according to the content hit rate, A content type checking step of checking the type of the requested content according to the on-demand video content request from the user terminal; As a result of the checking, as the requested content is content of a main server group having a high hit rate, an IP of the user terminal is analyzed to attempt to connect the user terminal with the corresponding local node, and to determine whether the connection is successful. Determination step; As a result of the determination in the first determination step, as the connection between the user terminal and the local node is successful, the requested content is delivered to the user terminal, and the user terminal fails to connect with the local node. A second determination step of attempting to connect the terminal to the central node main server group and determining whether the connection is successful; As a result of the determination in the second determination step, as the connection between the user terminal and the central node main server group succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node main server group fails. Transmitting a failure message to the user terminal; A third determination step of attempting to connect the user terminal with the central node library server group as the requested content is content of a library server group having a low hit rate, and determining whether the connection is successful; And As a result of the determination in the third determination step, as the connection between the user terminal and the central node library server group succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node library server group fails. Transmitting a failure message to the user terminal. Content providing method according to the content hit ratio comprising a. In order to distribute the content according to the content hit rate, to a content distribution device having a processor, A content input / storing unit for receiving and storing content to be distributed and a content distribution work command; A function of the content delivery control unit receiving the content distribution operation command from the content input / storage unit and delivering the content distribution operation command to a first content distribution management unit; If the first content distribution management unit transmits the content distribution operation command to the second content distribution management unit because the content according to the content distribution operation command is the content of the library server group with low hit rate, the second content distribution management unit transmits the content of the corresponding library server group. Downloading and storing the content from the content input / storage unit and notifying the content delivery control unit of completion of content distribution work; Since the content according to the content distribution job command is the main server group content having a high hit rate, the first content distribution manager downloads and stores the corresponding main server group content from the content input / storage unit and distributes the content to the content delivery control unit. The ability to notify completion; And As the first content distribution management unit completes the distribution of the main server group content having a high hit rate, when the content delivery control unit transmits a content distribution operation command to the third content distribution management unit, the third content distribution management unit transmits the second content. Downloading and storing the main server group contents from the distribution management unit and notifying the content delivery control unit of completion of content distribution work. A computer-readable recording medium having recorded thereon a program for realizing this. In order to provide content according to the content hit rate, on-demand video system with a processor, A content type checking function for checking the type of the requested content according to the on-demand video content request from the user terminal; As a result of the checking, as the requested content is content of a main server group having a high hit rate, an IP of the user terminal is analyzed to attempt to connect the user terminal with the corresponding local node, and to determine whether the connection is successful. Judgment function; As a result of the determination in the first determination function, as the connection between the user terminal and the corresponding local node succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the corresponding local node fails. A second determination function for attempting to connect the user terminal to the central node main server group and determining whether the connection is successful; As a result of the determination in the second determination function, as the connection between the user terminal and the central node main server group succeeds, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node main server group is established. Transmitting a failure message to the user terminal according to the failure; A third determination function of attempting to connect the user terminal to the central node library server group as the requested content is content of a library server group having a low hit rate, and determining whether the connection is successful; And As a result of the determination in the third determination function, as the connection between the user terminal and the central node library server group is successful, the requested content is delivered to the user terminal, and the connection between the user terminal and the central node library server group is performed. A function of delivering a failure message to the user terminal as a failure A computer-readable recording medium having recorded thereon a program for realizing this.