KR101996239B1 - Message processing system and method - Google Patents

Abstract

A message processing apparatus and method and a service management module for performing the message processing apparatus and method are provided. A message processing apparatus according to an embodiment of the present invention includes: a plurality of device management modules; And a plurality of service management modules for transmitting a message to at least one device management module among the plurality of device management modules, wherein each of the service management modules includes: an ID of each of the device management modules and a total number Determines which of the plurality of device management modules is responsible for one or more responsible device management modules, and retransmits or deletes the messages transmitted to the respective responsible device management modules.

Description

[0001] MESSAGE PROCESSING SYSTEM AND METHOD [0002]

Embodiments of the present invention relate to a message processing apparatus and method, and more particularly to techniques for distributing the load of a message processing system.

Recently, with the generalization of mobile terminals and the development of information communication technology, there is an increasing demand for a message processing system that provides various message services. Such a message processing system can be applied to various fields such as a security service, an e-mail service, and a payment service. In the message processing system, the transmitting side and the receiving side transmit and receive various messages related to the service provided by the message processing system, and the message is often retransmitted to secure the reliability of the service.

However, in the conventional message processing system, a message is repeatedly transmitted between a transmitting side and a receiving side due to message retransmission, which frequently results in overloading of the system. Also, this problem becomes more prominent as the size of the service becomes larger and the number of the transmitting / receiving side instances increases.

Korean Patent Publication No. 10-2017-0087116 (July 27, 2017)

Embodiments of the present invention are intended to provide means for preventing duplicate transmissions of messages and distributing the load.

According to an exemplary embodiment of the present invention, a plurality of device management modules; And a plurality of service management modules for transmitting a message to at least one device management module among the plurality of device management modules, wherein each of the service management modules includes: an ID of each of the device management modules and a total number Is used to determine one or more responsible device management modules that are responsible for the plurality of device management modules and to retransmit or delete the messages transmitted to the respective responsible device management modules.

Wherein each of the service management modules calculates a modulo operation value for each of the device management modules by performing a modulus operation of a hash value for each ID of each of the device management modules to the total number of the service management modules, Value and its own identification number to determine the responsible device management module.

The identification number may be determined according to the order in which each of the service management modules accesses the database.

Each of the service management modules records the identification number of the service management module in the database and confirms the total number of the service management modules by referring to the database.

Each of the service management modules determines whether or not to retransmit or delete the message at a set interval. When the total number of the service management modules is changed, the service management module recalculates the modular operation value at the time of retransmission or deletion of the message, The device management module can be re-determined.

According to another exemplary embodiment of the present invention, there is provided a service management module for transmitting a message to at least one device management module among a plurality of device management modules, the service management module comprising: A determining unit that determines at least one responsible device management module of the plurality of device management modules, And a processing unit for retransmitting or deleting the message sent to the responsible device management module.

Wherein the determiner calculates a modulo operation value for each of the device management modules by performing a modulus operation of a hash value for each ID of each of the device management modules to the total number of the service management modules, The responsible device management module can be determined with reference to the identification number of the device management module.

The identification number may be determined according to the order in which each of the service management modules accesses the database.

The determination unit may record the identification number of the user in the database and confirm the total number of the service management modules by referring to the database.

Wherein the processing unit determines whether to retransmit or delete the message at a set interval, and the determining unit recalculates the modulo operation value at the time of retransmission or deletion of the message when the total number of the service management modules is changed, The responsible device management module can be re-determined.

According to another exemplary embodiment of the present invention, in a determination unit of a service management module that transmits a message to at least one device management module among a plurality of device management modules, the ID of each of the device management modules, Determining at least one responsible device management module of the plurality of device management modules, the number being managed by the plurality of device management modules; And a step of, in the processing unit of the service management module, retransmitting or deleting the message sent to the responsible device management module.

The step of determining the responsible device management module may include calculating a modular operation value for each of the device management modules by performing a modulus operation of a hash value for each ID of each of the device management modules to the total number of the service management modules step; And determining the responsible device management module by referring to the modular operation value and its own identification number.

The identification number may be determined according to the order in which each of the service management modules accesses the database.

The step of determining the responsible device management module may include the step of recording the identification number of the device itself in the database and checking the total number of the service management modules with reference to the database, .

Wherein the step of retransmitting or deleting the message determines whether to retransmit or delete the message at a set interval, and the step of calculating the modular operation value comprises: when the total number of the service management modules is changed, The modular calculation value may be recalculated at the time of deletion, and the step of determining the responsible device management module may re-determine the responsible device management module by referring to the re-calculated modular operation value and its identification number.

According to the embodiments of the present invention, each service management module performs only message retransmission and deletion processing for the responsible device management module (i.e., distributes the assigned device management module for each service management module) It is possible to prevent duplication of messages in the management module and to distribute the load.

In addition, according to embodiments of the present invention, when the total number of service management modules is changed, the corresponding device management module in each service management module is also dynamically changed (i.e., dynamically redistributed) Even if a failure occurs or a new service management module is added, message processing can be performed efficiently by reflecting this.

1 is a block diagram showing a detailed configuration of a message processing apparatus according to an embodiment of the present invention;
2 illustrates an example of a service management module and an application server according to an embodiment of the present invention.
3 illustrates an example of a device management module and a device according to an embodiment of the present invention.
4 is a block diagram illustrating a detailed configuration of a service management module according to an embodiment of the present invention.
5 is a flowchart illustrating an example of a process of determining a device management module in charge in a determination unit according to an embodiment of the present invention.
6 is a diagram illustrating a process of redetermining a charged device management module in response to a change in the total number of service management modules in a determination unit according to an exemplary embodiment of the present invention.
7 is a diagram illustrating a process of redetermining a charged device management module according to a change in the total number of service management modules in a determination unit according to an exemplary embodiment of the present invention.
8 is a flowchart illustrating a message processing method according to an embodiment of the present invention.
9 is a block diagram illustrating and illustrating a computing environment including a computing device suitable for use in the exemplary embodiments.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular form of a term includes plural forms of meaning. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

1 is a block diagram showing a detailed configuration of a message processing apparatus 100 according to an embodiment of the present invention. 1, the message processing apparatus 100 according to an exemplary embodiment of the present invention includes a service management module 102, a device management module 104, a message server 106, and a third party message server 108. [ .

The service management module 102 is an application server (not shown) side component, and transmits and receives various messages related to the application service between the application server and the message server 106. In embodiments of the present invention, the application server is a server for providing application services to a device (not shown). The application service may be, for example, a security related service such as a camera control of a device, a microphone control, a recording function control, or the like, but this is merely an example, and the application service is not particularly limited. In addition, the message may be, for example, a control message for executing the above-described application service in the device, an acknowledgment message for the control message (i.e., an ACK message), and the like.

The service management module 102 may provide reliability to the application server by sending and receiving messages between the application server and the message server 106. [ Specifically, the service management module 102 generates a message related to the application service according to a request from the application server, stores the message in a database (not shown), and transmits the message to the device management module 104 via the message server 106 Lt; / RTI >

At this time, the service management module 102 may retransmit or delete the message according to whether it receives an acknowledgment message (that is, an ACK message) for the message from the device management module 104 within a predetermined time. As an example, the service management module 102 may resend the message if it does not receive an acknowledgment message for the message within the set time. As another example, the service management module 102 may delete the message stored in the database when receiving the acknowledgment message for the message within the set time. The process of the service management module 102 retransmitting or deleting the message will be described later in detail with reference to FIG. 4 through FIG.

In addition, the service management module 102 can perform additional functions such as cancellation of message transmission, conversion of the user ID into the ID of the device management module 104, authentication information management for security, multicast transmission request processing, have.

A plurality of service management modules 102 may exist for load balancing, and each service management module 102 may have a different ID (i.e., an instance ID). In addition, the service management module 102, which processes the same application service, belongs to the same group and can have the same group ID. In addition, the service management module 102 and the application server may be located in the first network. In the present embodiments, the first network may be, for example, an intranet of a particular organization or enterprise.

The device management module 104, as a device-side component, transmits and receives various messages related to the application service between the application client (not shown) installed in the device and the message server 106. In embodiments of the present invention, the device may be a terminal carried by the user, for example, a mobile terminal such as a smart phone, a notebook, a tablet PC, or the like. Further, the application client is a module installed in the device and causing the device to execute the application service provided by the application server.

The device management module 104 receives a message associated with the application service from the service management module 102 via the message server 106 and transmits an acknowledgment message (i.e., an ACK message) To the service management module 102. In addition, the device management module 104 may perform additional functions such as cancellation of message transmission, management of authentication information for security, and the like.

At least one such device management module 104 may exist for each device, and each device management module 104 may have a different ID. The device can be assigned the ID of the device management module 104 from the message server 106 in the process of activating the device management module 104 for the first time. In addition, the device in which the device management module 104 and the device management module 104 are installed may be located in the second network. In the present embodiments, the second network may be an outside area of the first network, for example, the Internet.

The message server 106 is a server that relays (or bi-directionally transmits) a message related to an application service between the service management module 102 and the device management module 104. At this time, the message server 106 may be located in a demilitarized zone (DMZ) between the first network and the second network. A DMZ is a subnetwork located between a first network and a second network, and a firewall may exist between the first network and the DMZ.

The message server 106 may include various channel managers for message relaying, and may route the messages through the channel manager.

The third party message server 108 may be a message server of another organization or enterprise, for example a message server (or push server) of Google Cloud Messaging (GCM), Apple Push Notification Service (APNS). The message server 106 may send and receive messages associated with application services to and from the third party message server 108 via an internal channel manager.

Figure 2 is an illustration of a service management module 102 and an application server 200 according to one embodiment of the present invention.

Referring to FIG. 2, the service management module 102 according to an embodiment of the present invention may exist for a plurality of (for example, 100) load balancing and may call a function through a library (not shown) Way communication with the application server 200 in the form of a message. To this end, the service management module 102 may include an interface (not shown) for bidirectional communication with the application server 200. As described above, the service management module 102 generates a message related to the application service according to a request of the application server 200, stores the message in the database 150, (104). The database 150 may be coupled to each service management module 102 in the first network.

At this time, the message may include a source address, a destination address, via information, data information (for example, an application ID, an ID of a previously transmitted message, etc.) have. Here, the sender address may include the ID of the service management module 102 that transmits the message, and the receiver address may include the ID of the device management module 104, which is the destination of the message. The message server 106 may route the message to the device management module 104 using the sender information, recipient information, transit information, and the like included in the message.

FIG. 3 is an illustration of a device management module 104 and device 300 in accordance with an embodiment of the present invention.

Referring to FIG. 3, the device management module 104 according to an embodiment of the present invention is installed in the device 300 and transmits and receives messages related to the application service to each application client 302. The device management module 104-1 can bidirectionally communicate with the application client 302 in the form of calling a function through a library (not shown). To this end, the device management module 104-1 may include an interface (not shown) for bi-directional communication with the application client 302. [

The device management module 104 also receives a message associated with the application service from the service management module 102 via the message server 106 and transmits an acknowledgment message for the message via the message server 106 Message to the service management module 102.

According to an embodiment of the present invention, the application server 200 side component, that is, the service management module 102 may be configured as a multi-instance for load balancing, and the application server 200 may configure the multi- 300) side component, that is, the device management module 104, as shown in FIG. However, even if the service management module 102 is configured as a multi-instance, when a message to be retransmitted or deleted is concentrated in the specific service management module 102, a load is concentrated only on the service management module 102, Can be degraded. In addition, each service management module 102 may repeatedly transmit the same message, thereby frequently generating an unnecessary load. Accordingly, in the embodiments of the present invention, regardless of whether a message transmission is requested to a service management module 102, the message re-transmission and deletion processing for the specific device management module 104 is performed only by the specific service management module 102 So that duplicate transmission of messages can be prevented and load can be distributed. This will be described in detail with reference to Figs. 4 to 7.

4 is a block diagram illustrating a detailed configuration of a service management module 102 according to an embodiment of the present invention. 4, the service management module 102 according to an exemplary embodiment of the present invention includes a DB access unit 402, a device management module determination unit 404, and a processing unit 406. As shown in FIG.

The DB access unit 402 accesses the database 150 as the service management module 102 is activated and records its identification number in the database 150. Here, the identification number is a number for identifying each service management module 102, and may be changed according to the order in which each service management module 102 accesses the database 150. As an example, if the service management module 102 first accesses the database 150, the identification number of the service management module 102 may be # 0. Also, when the service management module 102 accesses the database 150 a second time, the identification number of the service management module 102 may be # 1. In this way, the identification numbers of the respective service management modules 102 may be # 0, # 1, # 2, etc. according to the order in which each service management module 102 accesses the database 150, The service management module 102 may record its identification number in the database 150.

The determination unit 404 determines one or more responsible device management modules 104 that the plurality of device management modules 104 are responsible for using the IDs of the device management modules 104 and the total number of the service management modules 102, .

First, the determination unit 404 may refer to the database 150 to obtain a hash value for each ID of each device management module and the total number of service management modules. The hash value of each of the device management modules or the ID of each of the device management modules may be stored in the database 150 and the determination unit 404 may refer to the database 150, And obtains a hash value for each ID of the device management module by referring to the database 150. [ As described above, each service management module 102 can record its own identification number in the database 150, and the determination unit 404 refers to the database 150 to determine the total number of service management modules . As an example, the determination unit 404 may check the total number of the service management modules by referring to the identification number of the service management module 102 last recorded in the database 150. [

Next, the determination unit 404 may calculate a modular operation value for each of the device management modules by performing a modulus operation on the hash values of the IDs of the device management modules to the total number of the service management modules. A modular operation is an operation to obtain the remainder by dividing two values. In the modular operation expressed by a mod b (or a% b), the remainder value when a is divided by b is output. Since the hash values for the respective IDs of the device management modules have different values, when the hash values of the IDs of the device management modules are modulo-operated to the total number of the service management modules, They can be uniformly grouped by the total number of service management modules with a random probability. As an example, when the number of the service management module 102 and the number of the device management modules 104 is 100 and 400,000, respectively, the determination unit 404 determines 400,000 device management modules 104 through the modular operation Grouping can be grouped into 100 groups (i.e., groups corresponding to the modular operation values 0, 1, 2 ... 99 respectively).

Next, the determination unit 404 can determine the responsible device management module by referring to the modular operation value and its identification number. Specifically, the determining unit 404 compares the moduler operation value with its own identification number, finds a moduler operation value corresponding to (or coinciding with) its own identification number in the moduler operation value, A device management module having an ID of a device management module (i.e., an ID of a device management module used to acquire the modular operation value) may be determined by the device management module in charge. In this manner, each service management module 102 can determine the respective chargeable device management modules through the modular operation, and accordingly, the chargeable device management modules for each service management module 102 can obtain uniformity Lt; / RTI >

The processing unit 406 retransmits or deletes the message transmitted to the responsible device management module of the service management module 102. [ As described above, when the service management module 102 does not receive the acknowledgment message for the message within the set time, the service management module 102 can retransmit the message. When receiving the acknowledgment message for the message within the set time, And delete the message stored in the memory 150. In performing the message retransmission and deletion processing, the processing unit 406 performs only the message retransmission and deletion processing for the responsible device management module in charge of itself and retransmits the message to the other device management module And deletion processing is not performed. That is, according to the embodiments of the present invention, each service management module 102 performs only message retransmission and deletion processing for the responsible device management module in charge of itself, Transmission can be prevented and load can be dispersed.

In addition, the processing unit 406 can determine whether to retransmit or delete the message every set period (for example, two minutes). At this time, the period may be different for each service management module 102. The processing unit 406 may retransmit or delete the messages for each chargeable device management module one by one for each cycle.

At this time, when the total number of the service management modules 102 is changed, the determination unit 404 can re-calculate the modular operation value at the time of retransmission or deletion of the message to redetermine the responsible device management module. As an example, if some of the plurality of service management modules 102 do not operate due to a system failure or the like, the determination unit 404 recalculates the modular operation value at the time of retransmission or deletion of the message, The management module can be redetermined. As another example, when the service management module 102 is newly added due to an increase in the user of a specific solution or the like, the determination unit 404 recalculates the modular operation value at the time of retransmission or deletion of the message, The module can be redetermined. The period for retransmitting or deleting the message may be different for each service management module 102. In this case, the modular operation value is recalculated for each service management module 102 and the re- It can also be different.

In this way, according to the embodiments of the present invention, when the total number of service management modules 102 is changed, the service management module managed by each service management module 102 is also dynamically changed, 102, or even if a new service management module 102 is added, the message processing can be performed efficiently.

FIG. 5 is an illustration for explaining a process of determining a chargeable device management module in the determination unit 404 according to an embodiment of the present invention.

Here, it is assumed that the number of the service management module 102 and the number of the device management module 104 are three and nine, respectively. It is assumed that the identification numbers of the respective service management modules 102 are # 0, # 1 and # 2, and the hash values for the IDs of the device management modules 104 are 1, 2, 3 ... 9 .

As described above, the determination unit 404 of each service management module 102 performs a modular operation on the hash values of the IDs of the device management modules to the total number of the service management modules, And determine the responsible device management module by referring to the modular operation value and its own identification number. In FIG. 3, the determination unit 404 of each service management module 102 may calculate the modular operation values as shown in Table 1 below.

Device management module Modular operation value Device management module 1 One Device Management Module 2 2 Device Management Module 3 0 Device Management Module 4 One Device Management Module 5 2 Device Management Module 6 0 Device Management Module 7 One Device Management Module 8 2 Device Management Module 9 0

Then, the determination unit 404 of each service management module 102 finds a modulo operation value corresponding to its own identification number among the modulo operation values, and determines the ID of the device management module associated with the modulo operation value (that is, The ID of the device management module used to acquire the operation value) can be determined by the device management module in charge. In the above example, the service management module # 0 determines the device management module 3, the device management module 6, and the device management module 9 associated with the modular operation value 0 as the responsible device management module, and the device management module 3, the device management module 6, Only the message retransmission and deletion processing for the management module 9 can be performed. The service management module # 1 determines the device management module 1, the device management module 4, and the device management module 7 associated with the modular operation value 1 as the responsible device management module. The device management module 1, the device management module 4, 7 only for the message retransmission and deletion processing. The service management module # 2 determines the device management module 2, the device management module 5, and the device management module 8 associated with the modular operation value 2 as the responsible device management module. The device management module 2, the device management module 5, 8 only for message retransmission and deletion processing.

FIG. 6 and FIG. 7 are illustrations for explaining a process of redetermining a charged device management module according to a change in the total number of service management modules in the determination unit 404 according to an embodiment of the present invention. In FIG. 6, it is assumed that the service management module # 2 does not operate due to a failure or the like. In FIG. 7, it is assumed that the service management module # 3 is newly added for load balancing.

6, when the service management module # 2 does not operate, the determination unit 404 of each service management module 102 recalculates the modular operation value at the time of retransmission or deletion of the message, Can be re-determined. In the above example, the service management module # 0 determines the device management module 2, the device management module 4, the device management module 6, and the device management module 8 associated with the modular operation value 0 as the responsible device management module, Only the message retransmission and deletion processing for the management module 4, the device management module 6, and the device management module 8 can be performed. The service management module # 1 determines the device management module 1, the device management module 3, the device management module 5, and the device management module 7 associated with the modular operation value 1 as the responsible device management module, , The device management module 5, and the device management module 7 only.

7, when the service management module # 3 is added, the determination unit 404 of each service management module 102 recalculates the modular operation value at the time of retransmission or deletion of the message, Can be re-determined. In the above example, the service management module # 0 determines the device management module 4 and the device management module 8 associated with the modular operation value 0 as the responsible device management module, and performs the message retransmission and deletion processing for the device management module 4 and the device management module 8 . The service management module # 1 determines the device management module 1, the device management module 5, and the device management module 9 associated with the modular operation value 1 as the responsible device management module. The device management module 1, the device management module 5, 9 only for the retransmission and deletion of the message. The service management module # 2 determines the device management module 2 and the device management module 6 associated with the modular operation value 2 as the responsible device management module and performs only the message retransmission and deletion processing for the device management module 2 and the device management module 6 can do. The service management module # 3 determines the device management module 3 and the device management module 7 associated with the modular operation value 3 as the responsible device management module and performs only the message retransmission and deletion processing for the device management module 3 and the device management module 7 can do.

8 is a flowchart illustrating a message processing method according to an embodiment of the present invention. The method shown in Fig. 8 can be performed, for example, by the service management module 102 described above. In the illustrated flow chart, the method is described as being divided into a plurality of steps, but at least some of the steps may be performed in reverse order, combined with other steps, performed together, omitted, divided into detailed steps, One or more steps may be added and performed.

In step S802, the determination unit 404 performs a modular operation on the hash values of the respective IDs of the device management modules 104 to the total number of the service management modules 102 to calculate a modular operation value for each of the device management modules 104 do.

In step S804, the determination unit 404 determines the responsible device management module by comparing the modular operation value with its own identification number, respectively.

In step S806, the processing unit 406 performs message retransmission and deletion processing for the responsible device management module that is in charge of itself.

In step S808, when the total number of the service management modules 102 is changed, the determination unit 404 recalculates the modular operation value at the time of retransmission or deletion of the message.

In step S810, the determination unit 404 compares the re-computed modulo operation value with its own identification number, and re-determines the responsible device management module.

In step S812, the processing unit 406 performs message retransmission and deletion processing for the responsible device management module determined in step S808.

9 is a block diagram illustrating and illustrating a computing environment including a computing device suitable for use in the exemplary embodiments. In the illustrated embodiment, each of the components may have different functions and capabilities than those described below, and may include additional components in addition to those described below.

The illustrated computing environment 10 includes a computing device 12. In one embodiment, computing device 12 may be one or more components included in message processing device 100, or message processing device 100.

The computing device 12 includes at least one processor 14, a computer readable storage medium 16, The processor 14 may cause the computing device 12 to operate in accordance with the exemplary embodiment discussed above. For example, processor 14 may execute one or more programs stored on computer readable storage medium 16. The one or more programs may include one or more computer-executable instructions, which when executed by the processor 14 cause the computing device 12 to perform operations in accordance with the illustrative embodiment .

The computer-readable storage medium 16 is configured to store computer-executable instructions or program code, program data, and / or other suitable forms of information. The program 20 stored in the computer-readable storage medium 16 includes a set of instructions executable by the processor 14. In one embodiment, the computer-readable storage medium 16 may be any type of storage medium such as a memory (volatile memory such as random access memory, non-volatile memory, or any suitable combination thereof), one or more magnetic disk storage devices, Memory devices, or any other form of storage medium that can be accessed by the computing device 12 and store the desired information, or any suitable combination thereof.

Communication bus 18 interconnects various other components of computing device 12, including processor 14, computer readable storage medium 16.

The computing device 12 may also include one or more input / output interfaces 22 and one or more network communication interfaces 26 that provide an interface for one or more input / output devices 24. The input / output interface 22 and the network communication interface 26 are connected to the communication bus 18. The input / output device 24 may be connected to other components of the computing device 12 via the input / output interface 22. The exemplary input and output device 24 may be any type of device, such as a pointing device (such as a mouse or trackpad), a keyboard, a touch input device (such as a touch pad or touch screen), a voice or sound input device, An input device, and / or an output device such as a display device, a printer, a speaker, and / or a network card. The exemplary input and output device 24 may be included within the computing device 12 as a component of the computing device 12 and may be coupled to the computing device 12 as a separate device distinct from the computing device 12 It is possible.

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 embodiments, but, on the contrary, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

10: Computing environment
12: computing device
14: Processor
16: Computer readable storage medium
18: Communication bus
20: Program
22: I / O interface
24: input / output device
26: Network communication interface
100: Message processing device
102: service management module
104: Device management module
106: message server
108: Third party message server
150: Database
200: Application server
300: device
302: Application client
402: DB access unit
404:
406:

Claims (15)

A plurality of device management modules; And
And a plurality of service management modules for transmitting a message to at least one device management module among the plurality of device management modules,
Wherein each of the service management modules determines at least one responsible device management module of the plurality of device management modules by using the ID of each of the device management modules and the total number of the service management modules, The message transmitted to the management module is retransmitted or deleted every set period,
Calculating a modular operation value for each of the device management modules by performing a modulus operation of a hash value of each of the device management modules to a total number of the service management modules, Determines the responsible device management module,
If the total number of the service management modules is changed, re-calculating the modular operation value at the time of retransmission or deletion of the message,
And retransmitting the message if the acknowledgment message for the message is not received within a set time, and deleting the message if the acknowledgment message is received within the set time.
delete The method according to claim 1,
Wherein the identification number is determined according to the order in which each of the service management modules has accessed the database.
The method of claim 3,
Wherein each of the service management modules records the identification number of the service management module in the database and confirms the total number of the service management modules with reference to the database.
delete A service management module for transmitting a message to at least one device management module among a plurality of device management modules,
A determination unit for determining at least one responsible device management module of the plurality of device management modules, using the IDs of the device management modules and the total number of the service management modules; And
And a processing unit for retransmitting or deleting the message transmitted to the responsible device management module every set period,
Wherein the determiner calculates a modulo operation value for each of the device management modules by performing a modulus operation of a hash value for each ID of each of the device management modules to the total number of the service management modules, Determines the responsible device management module with reference to the identification number of the device management module,
If the total number of the service management modules is changed, re-calculating the modular operation value at the time of retransmission or deletion of the message,
Wherein the processing unit retransmits the message if the acknowledgment message for the message is not received within a set time and deletes the message if the acknowledgment message is received within the set time.
delete The method of claim 6,
Wherein the identification number is determined according to the order in which each of the service management modules has accessed the database.
The method of claim 8,
Wherein the determination unit records the identification number of the service management module in the database and confirms the total number of the service management modules by referring to the database.
delete Wherein the determination unit of the service management module that transmits a message to at least one device management module among the plurality of device management modules uses the ID of each of the device management modules and the total number of the service management modules, Determining at least one responsible device management module in charge of itself; And
Wherein the processing unit of the service management module retransmits or deletes the message transmitted to the responsible device management module every set period,
Wherein the determining of the responsible device management module comprises:
Calculating a modular operation value for each of the device management modules by performing a modulus operation of a hash value for each ID of each of the device management modules to the total number of the service management modules; And
Determining the responsible device management module by referring to the modular operation value and its own identification number,
Wherein the modular operation value is calculated by recalculating the modular operation value at the time of retransmission or deletion of the message when the total number of the service management modules is changed,
Wherein the determining of the responsible device management module comprises: re-determining the responsible device management module with reference to the re-computed modular operation value and its identification number;
Wherein the retransmitting or deleting step comprises retransmitting the message if the acknowledgment message for the message is not received within a set time and deleting the message if the acknowledgment message is received within the set time.
delete The method of claim 11,
Wherein the identification number is determined according to the order in which each of the service management modules has accessed the database.
14. The method of claim 13,
Wherein the determining of the responsible device management module comprises:
Before the step of calculating the calculation value,
Further comprising the steps of: recording the identification number of the service management module in the database; and checking the total number of the service management modules with reference to the database.
delete

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