KR101659579B1 - Server multiplex service providing apparatus using publish-subscribe method and method therefor - Google Patents
Server multiplex service providing apparatus using publish-subscribe method and method therefor Download PDFInfo
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- KR101659579B1 KR101659579B1 KR1020150076052A KR20150076052A KR101659579B1 KR 101659579 B1 KR101659579 B1 KR 101659579B1 KR 1020150076052 A KR1020150076052 A KR 1020150076052A KR 20150076052 A KR20150076052 A KR 20150076052A KR 101659579 B1 KR101659579 B1 KR 101659579B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1029—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1034—Reaction to server failures by a load balancer
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Information Transfer Between Computers (AREA)
Abstract
Description
The present invention relates to a system for multiplexing servers and a multiplexing method thereof. More specifically, the present invention relates to a system for multiplexing servers and a method of multiplexing them using a public-subscription method for constructing a plurality of identical system devices, Server multiplexing service providing apparatus and multiplexing method.
There are two methods for multiplexing a server. It is active-standby type and active-active type. Active-Standby Server (Server) Multiplexing is intended to provide network services by activating spare servers that were waiting before recovering a failed active server in the event of an active server failing in networking.
However, in the case of using the multiplexing method of the server which substitutes the spare server, the service is interrupted while the failed server is switched and replaced with the spare server, so that the data is lost and the service recovery is delayed during the switching period There is no other way. In addition, in case that the work load due to the replacement work of the failed server occurs, and the standby server which is replaced in the middle of the replacement of the failed server fails, the standby server should be prepared in triple quadruple. These standby servers are inefficient in terms of resource utilization because they do nothing when the active server is normal.
Active-active server multiplexing is a service that is maintained by other servers even if one server fails, so there is no data loss or delay in service recovery. Since it is a form that needs to be continuously added to the server, there is little burden on the server work. It is also efficient in terms of load balancing and resource utilization among active servers. Because of these many advantages, we prefer active - active server multiplexing in terms of service operation, but it is difficult to implement and there is no standardized method because system is various.
In the case of a system in which distributed processing is performed using a plurality of multiplexed servers and a multiplexed network, it is necessary for each of the servers to quickly and securely send and receive messages without additional work burden due to multiplexing. In a multiplexed distributed server system, communication between the servers can be ensured to be convenient and reliable, and a server multiplexing method of a new method that can be applied to various systems is demanded.
It is an object of the present invention to provide a method and system for providing a high performance and high reliability of data transmission even under a failure condition of a specific server without depending on a database by constructing a multiplexed server against a failure of a specific server by using a public- And a method for providing the server multiplexing service.
According to an embodiment of the present invention, an apparatus for providing a server multiplexing service using a publish-subscribe scheme obtains transmission information to be transmitted to a client including client identification information capable of identifying a client to be a transmission target from a user, A data storage unit for transmitting and storing data to all servers; And at least one server for transmitting and receiving the transmission information. The server generates client connection list information using client information acquired from each client connected to the server, and transmits client connection list information corresponding to client identification information included in the received transmission information A server for transmitting or deleting the received transmission information by determining whether the client is included in the generated client connection list information; A session management unit for obtaining server state information including a connection state and a connection state of a server from each server and generating connectable server list information using the server state information; And at least one load balancer for obtaining identification information of a server connectable to each client that has transmitted the distribution request in correspondence with each received distribution request and the connectable server list information received and transmitting the identification information to each client, A balancing portion; And a client unit including at least one client that transmits a distribution request and connects to a server corresponding to the received identification information of the server connected to the client and receives transmission information from the connected server.
According to an embodiment of the present invention, the data storage unit stores the received transmission information, and transmits the stored transmission information when reaching at least one server included in the client or the multi server unit corresponding to the client identification information Can be deleted.
According to an embodiment of the present invention, the multi-server may acquire identification information from at least one client connected to each server according to a predetermined period, and may periodically update the client connection list information.
According to an embodiment of the present invention, the session management unit may transmit abnormal notification data when the status of the specific server is determined to be abnormal using the server status information.
According to an embodiment of the present invention, when the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, the multi-server unit transmits the received transmission information to the client identification Information to the client corresponding to the information, and if not, deletes the received transmission information.
According to an embodiment of the present invention, when the transmission information is transmitted to the client corresponding to the client identification information, the multi-server unit may delete the transmission information temporarily stored when the transmission information reaches the client have.
According to an embodiment of the present invention, a method of providing a server multiplexing service using a public-subscription method includes acquiring transmission information to be transmitted to a client including client identification information capable of identifying a client to be a transmission target from a user, Transmitting and storing to all servers; The server transmits and receives the transmission information, generates client connection list information using the client information acquired from each client connected to the server, and transmits the client connection list information to the client corresponding to the client identification information included in the received transmission information, And transmitting or deleting the received transmission information; Obtaining server state information including a connection state and a connection state of a server from each server, and generating connectable server list information using the server state information; Acquiring identification information of a server connectable to each client that has transmitted the distribution request, and transmitting the identification information to each client in correspondence with each received distribution request and the connectable server list information received; And transmitting the distribution request, and receiving the transmission information from the connected server by connecting to the server corresponding to the received identification information of the server connected to the client.
According to an embodiment of the present invention, the transmitting and storing to all the connected servers may include storing the received transmission information, and transmitting the stored transmission information when reaching a client or at least one server corresponding to the client identification information, Can be deleted.
According to an embodiment of the present invention, transmitting or deleting the transmission information comprises: acquiring identification information from at least one client connected to each server according to a predetermined period and updating the client connection list information periodically .
According to an exemplary embodiment of the present invention, the step of generating the connectable server list information may transmit the abnormal notification data when the status of the specific server is determined to be abnormal using the server status information.
According to an embodiment of the present invention, when the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, the step of transmitting or deleting the transmission information comprises: Transmits the transmission information to the client corresponding to the client identification information, and deletes the received transmission information if the transmission information is not included.
According to an embodiment of the present invention, when transmitting the transmission information to the client corresponding to the client identification information, the transmission or deletion of the transmission information may include storing the transmission information temporarily The transmission information can be deleted.
The present invention has the effect of showing high timeliness and integrity of data transmission even under a failure situation of a specific server without depending on a database by constructing a multiplexed server using a public-subscription method.
1 is a block diagram of an apparatus for providing a server multiplexing service using a publish-subscribe scheme according to an embodiment of the present invention.
2 is a diagram illustrating a flow of data in a server multiplexing service providing apparatus implemented according to an embodiment of the present invention.
3 is a flowchart illustrating a method of providing a server multiplexing service using a publish-subscribe scheme according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.
Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.
Hereinafter, an apparatus and method for providing a server multiplexing service using a publish-subscribe scheme according to an embodiment of the present invention will be described with reference to the drawings.
1 is a configuration diagram of an apparatus 1000 for providing a server multiplexing service using a publish-subscribe scheme according to an embodiment of the present invention.
Referring to FIG. 1, an apparatus 1000 for providing a server multiplexing service using a publish-subscribe scheme includes a
The
Here, the client identification information may mean information including an identifier capable of identifying a specific client to which the user wants to transmit the transmission information.
According to an exemplary embodiment of the present invention, an identification ID of a client may be used as an identifier for identifying a client. However, the identification ID of the client may be used without limitation as long as it can identify a specific client, .
According to an exemplary embodiment of the present invention, a client may refer to a terminal or an application program that is a destination of information transmitted from a user terminal providing information in the entire network.
More specifically, when a user connects to a server in a client / server configuration, the client may refer to the user himself or herself, or may be a program running on the computer.
According to one embodiment of the present invention, each client program may be designed to be executed automatically by one or more server programs, and each server program may require a client program.
According to an exemplary embodiment of the present invention, the transmission information to be transmitted to the client may include information including a signal, command, content, and the like to be transmitted by the user using the terminal.
According to the embodiment of the present invention, since the data storage unit can acquire the transmission information and transmit it to all connected servers simultaneously, it is possible to use a publish-subscribe method as a method of simultaneously transmitting transmission information to the server .
The publish-subscribe service means that the server transmits (publishes) data asynchronously to at least one client that is waiting using a protocol such as HTTP, and the client receives the service (subscript).
According to an embodiment of the present invention, the
A publisher is an object responsible for data distribution, so each publisher can send data in multiple data formats, so a single publisher can have multiple data writers.
In other words, there are data creators as many as the number of data types that a single publisher can receive, and data creators can take charge of assigning different types of data.
Therefore, when the data to be transmitted is transmitted to the publisher, the publisher can transmit the data to the associated subscriber according to the QoS value set to the publisher.
Also, the subscriber can receive the published data and receive the data using each application program according to the QoS of the subscriber.
In order to access the received data, a data interpreter according to the corresponding data format must be used and added to the subscriber.
A subscriber may include multiple data analyzers, each of which may read the different data formats it receives.
According to an embodiment of the present invention, the received transmission information may be stored and the stored transmission information may be deleted when the client arrives at a client corresponding to the client identification information.
According to an embodiment of the present invention, when the received transmission information is stored and the stored transmission information reaches at least one server included in a client or a multi server corresponding to the client identification information, the stored transmission information is deleted .
The multi-server 200 includes at least one server for transmitting and receiving transmission information. The multi-server 200 generates client connection list information using client information acquired from each client connected to the server, It is possible to determine whether a client corresponding to the client identification information included in the created client connection list information is included in the generated client connection list information and to transmit or delete the received transmission information.
Herein, the client information may refer to information capable of identifying a client that can be connected to or connected to each server.
According to an exemplary embodiment of the present invention, the identification information of the client can be used as the information for identifying the client. However, the identification information is not limited to the client ID. For example, Can be used.
According to an embodiment of the present invention, the client connection list information is list information generated by using the client information acquired from each client. The client connection list information is generated by a list format, Or in the case where there is a request for confirmation of the information of the user.
According to an embodiment of the present invention, identification information may be acquired from at least one client connected to each server according to a predetermined period, and the client connection list information may be periodically updated.
According to an embodiment of the present invention, when the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, the received transmission information is transmitted to the client corresponding to the client identification information And if it is not included, delete the received transmission information.
According to the embodiment, when the transmission information is transmitted to the client corresponding to the client identification information, the transmission information temporarily stored when the transmission information reaches the client can be deleted.
The
Here, the connectable server list information may be information in which a list of information about an alive state check, a server normal operation check, the number of connected clients, and the like is generated from each server in a list format. The
In addition to the
According to an embodiment of the present invention, abnormal state notification data can be transmitted when the state of the specific server is determined to be abnormal using the server state information.
Here, the abnormal notification data may be data that can notify the abnormal state of a specific server by using an e-mail or a text message (SMS) format, but it is not limited to this, Any type of data that can be advertised can be used in any format.
The
Here, the load balancer may mean a device that distributes the load to each individual server in order to prevent the traffic from concentrating on the specific server so as to increase network efficiency.
According to an embodiment of the present invention, the obtaining of the identification information of the server connected to the transmitted client acquires the identification information of the client that has transmitted the received distribution request, and the information corresponding to the acquired identification information is linked to the server list information And if there is, it acquires information including an identifier capable of identifying a connected server. If the client does not exist, it can ignore the client because it is not connected to the server.
The
Here, the distribution request may mean that the client requests to distribute the server to be connected for networking.
2 is a diagram illustrating a flow of data in a server multiplexing service providing apparatus implemented according to an embodiment of the present invention.
According to an exemplary embodiment of the present invention, at least one server included in the multi-server 200 may obtain client information from a client connected to or connected to the server.
According to the embodiment, at least one server included in the multi-server 200 can generate client connection list information using the acquired client information.
According to an embodiment of the present invention, the
According to an embodiment of the present invention, at least one load balancer included in the
In addition, the load balancer can receive connectable server list information from the
According to an exemplary embodiment of the present invention, at least one load balancer included in the
According to one embodiment of the present invention, at least one load balancer included in the
According to an embodiment of the present invention, at least one client included in the
According to the embodiment, the client can connect to the server corresponding to the identification information of the server connected to the received client.
According to an embodiment of the present invention, a user transmits transmission information to be transmitted to a client including client identification information to its
According to an embodiment of the present invention, the
According to the embodiment, it is determined whether the client corresponding to the client identification information included in the received transmission information is included in the client connection list information stored in at least one server included in the
At least one client included in the
According to an embodiment of the present invention, when at least one server included in the multi-server 200 transmits transmission information to a client corresponding to client identification information, when transmission information reaches the client, The transmission information can be deleted.
Also, the
3 is a flowchart illustrating a method of providing a server multiplexing service using a publish-subscribe scheme according to an embodiment of the present invention.
Server status information is obtained (S10).
According to an embodiment of the present invention, server state information including a connection state and a connection state of a server can be obtained from each server.
According to an embodiment of the present invention, abnormal state notification data can be transmitted when the state of the specific server is determined to be abnormal using the server state information.
Here, the abnormal notification data may be data that can notify the abnormal state of a specific server by using an e-mail or a text message (SMS) format, but it is not limited to this, Any type of data that can be advertised can be used in any format.
Connectable server list information is generated (S20).
According to an embodiment of the present invention, connectable server list information can be generated using server status information.
Here, the connectable server list information may be information in which a list of alive state check, check of normal server operation, number of connected clients, and the like is generated from each server in a list format. Can be used to distribute a particular server to a client.
A distribution request is received from each client (S30).
Here, the distribution request may mean that the client requests to distribute the server to be connected for networking.
The distribution request and the receivable server list information are corresponded (S40).
According to an embodiment of the present invention, the distribution request received from each client and the list information of clients of each server can be corresponded.
And acquires identification information of a server connectable with the client and transmits the identification information (S50).
According to an embodiment of the present invention, identification information of a server connected to a client that has transmitted the distribution request can be obtained and transmitted to the client.
According to an embodiment of the present invention, obtaining the identification information of the server connected to the transmitted client can acquire the identification information of the client that has transmitted the received distribution request.
In addition, it is determined whether information corresponding to the acquired identification information is present in the connectable server list information. If the information exists, information including an identifier capable of identifying the connected server is acquired. If not, the client is not connected to the server I can ignore it and ignore it.
The client and the server are connected according to the identification information of the server (S60).
According to an embodiment of the present invention, the server can be connected to the server corresponding to the identification information of the server connected to the received client.
The client information is acquired from the connected client (S70).
Herein, the client information may refer to information capable of identifying a client that can be connected to or connected to each server.
According to an exemplary embodiment of the present invention, the identification information of the client can be used as the information for identifying the client. However, the identification information is not limited to the client ID. For example, Can be used.
Client connection list information for each server is generated using the client information (S80).
According to an embodiment of the present invention, the client connection list information is list information generated by using the client information acquired from each client. The client connection list information is generated by a list format, Or in the case where there is a request for confirmation of the information of the user.
According to an embodiment of the present invention, identification information may be acquired from at least one client connected to each server according to a predetermined period, and the client connection list information may be periodically updated.
The transmission information to be transmitted to the client is received (S90).
According to an embodiment of the present invention, transmission information to be transmitted to a client including client identification information capable of identifying a client to be a transmission target can be received from a user.
Here, the client identification information may mean information including an identifier capable of identifying a specific client to which the user wants to transmit the transmission information.
According to an exemplary embodiment of the present invention, an identification ID of a client may be used as an identifier for identifying a client. However, the identification ID of the client may be used without limitation as long as it can identify a specific client, .
The transmission information can be simultaneously transmitted to each server (S100).
According to an embodiment of the present invention, the transmission information to be transmitted to the client including the client identification information can be obtained and simultaneously transmitted to and stored in all connected servers.
According to the embodiment of the present invention, since the data storage unit can acquire the transmission information and transmit it to all the connected servers simultaneously, it is possible to use a publish-subscribe method as a method of simultaneously transmitting transmission information to the server .
It is determined whether the client is included in the client connection list information (S110).
According to an embodiment of the present invention, it is possible to determine whether a client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, and to transmit or delete the received transmission information.
Herein, the client information may refer to information capable of identifying a client that can be connected to or connected to each server.
According to an exemplary embodiment of the present invention, the identification information of the client can be used as the information for identifying the client. However, the identification information is not limited to the client ID. For example, Can be used.
According to an embodiment of the present invention, the client connection list information is list information generated by using the client information acquired from each client. The client connection list information is generated by a list format, Or in the case where there is a request for confirmation of the information of the user.
According to an embodiment of the present invention, identification information may be acquired from at least one client connected to each server according to a predetermined period, and the client connection list information may be periodically updated.
And transmits the transmission information to the corresponding client (S120).
According to an embodiment of the present invention, when the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, the received transmission information may be transmitted to the client corresponding to the client identification information have.
And deletes the received transmission information (S130).
According to an embodiment of the present invention, when the client corresponding to the client identification information included in the received transmission information is not included in the generated client connection list information, the received transmission information may be deleted.
When the transmission information reaches the client, the transmission information temporarily stored is deleted (S140).
According to an embodiment of the present invention, when the transmission information is transmitted to the client corresponding to the client identification information, the transmission information temporarily stored when the transmission information reaches the client can be deleted.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various modifications and improvements of those skilled in the art using the basic concept of the present invention are also within the scope of the present invention.
100: Data storage unit 200: Multiple server unit
300: Session management unit 400: Load balancing unit
500: client unit 1000: server multiplexing service providing apparatus
Claims (12)
And at least one server for transmitting and receiving the transmission information. The server generates client connection list information using client information acquired from each client connected to the server, and transmits client connection list information corresponding to client identification information included in the received transmission information A server for transmitting or deleting the received transmission information by determining whether the client is included in the generated client connection list information;
A session management unit for obtaining server state information including a connection state and a connection state of a server from each server and generating connectable server list information using the server state information;
And at least one load balancer for obtaining identification information of a server connectable to each client that has transmitted the distribution request in correspondence with each received distribution request and the connectable server list information received and transmitting the identification information to each client, A balancing portion; And
And a client unit including at least one client for transmitting a distribution request and connecting to a server corresponding to the received identification information of the server connected to the client and receiving transmission information from the connected server,
In the data storage unit,
A publish-subscribe method is used to simultaneously transmit transmission information to all the connected servers. A publisher can transmit data of various data formats as an object for data distribution, and the publisher The plurality of data creators are assigned to receive data of different types so that when the data to be transmitted is transmitted to the publisher, the publisher transmits the data to the associated subscriber according to the QoS value set to the publisher A server multiplexing service providing unit that uses the public -subscription method.
Stores the received transmission information, and deletes the stored transmission information when reaching at least one server included in the client or the multi-server unit corresponding to the client identification information. A server multiplexing service providing unit.
Wherein the server acquires identification information from at least one client connected to each server according to a predetermined period and updates the client connection list information periodically.
And transmits the abnormal notification data when the status of the specific server is determined to be abnormal using the server status information.
When the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, transmits the received transmission information to the client corresponding to the client identification information, And deletes the received transmission information if it is determined that the transmission service is not available.
When the transmission information is transmitted to the client corresponding to the client identification information, deletes the transmission information temporarily stored when the transmission information reaches the client. Service provider.
Acquiring transmission information to be transmitted to a client including client identification information capable of identifying a client to be a transmission target from a user, and transmitting and storing the transmission information to all connected servers;
The server generates client connection list information using the client information acquired from each client connected to the server, and when the client corresponding to the client identification information included in the received transmission information generates And transmitting or deleting the received transmission information;
Obtaining server state information including a connection state and a connection state of a server from each server, and generating connectable server list information using the server state information;
To obtain a received the distribution request and the received identification information of the connectable server list corresponding to the information that can be connected with each of the client that sent the distribution request, the server further comprising: transmitting to each client; And
And receiving transmission information from the connected server by connecting to a server corresponding to the received identification information of the server connectable to the client,
Transmitting and storing to all the connected servers,
A publish-subscribe method is used to simultaneously transmit transmission information to all the connected servers. A publisher can transmit data of various data formats as an object for data distribution, and the publisher The plurality of data creators are assigned to receive data of different types so that when the data to be transmitted is transmitted to the publisher, the publisher transmits the data to the associated subscriber according to the QoS value set to the publisher A method of providing a server multiplexing service using a public-subscription method.
Storing the received transmission information, and deleting the stored transmission information when reaching a client or at least one server corresponding to the client identification information.
Acquiring identification information from at least one client connected to each server according to a preset predetermined period, and periodically updating the client connection list information using the public-subscription method.
And transmitting the abnormal notification data when the status of the specific server is determined to be abnormal using the server status information.
When the client corresponding to the client identification information included in the received transmission information is included in the generated client connection list information, transmits the received transmission information to the client corresponding to the client identification information, And deletes the received transmission information if the received service information is not available.
When the transmission information is transmitted to the client corresponding to the client identification information, deletes the transmission information temporarily stored when the transmission information reaches the client. Service delivery method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190138355A (en) * | 2018-06-05 | 2019-12-13 | 엔에이치엔 주식회사 | Method and system for automatic load balancing of server channels based on user movement |
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| US20140195622A1 (en) * | 2001-11-30 | 2014-07-10 | Aurea Software, Inc. | Dynamic subscription and message routing on a topic between publishing nodes and subscribing nodes |
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| US20140195622A1 (en) * | 2001-11-30 | 2014-07-10 | Aurea Software, Inc. | Dynamic subscription and message routing on a topic between publishing nodes and subscribing nodes |
| KR101144190B1 (en) * | 2010-11-12 | 2012-05-14 | 삼성에스디에스 주식회사 | System and method for transmitting message |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190138355A (en) * | 2018-06-05 | 2019-12-13 | 엔에이치엔 주식회사 | Method and system for automatic load balancing of server channels based on user movement |
| KR102077061B1 (en) * | 2018-06-05 | 2020-02-14 | 엔에이치엔 주식회사 | Method and system for automatic load balancing of server channels based on user movement |
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