JP5867960B2 - Data distribution apparatus, data distribution method, and data distribution program - Google Patents

Description

  The present invention relates to a data distribution apparatus, a data distribution method, and a data distribution program for distributing data such as a program.

  When the server device distributes data such as a program to a client terminal via a network line, the load on the client terminal or the network line may increase. For example, if a program is distributed without considering the usage status of the client terminal, the load on the client terminal increases when processing being executed in the client terminal and program distribution overlap.

  Patent Document 1 describes a management apparatus that can execute a management program in an appropriate time zone, for example, a time zone that does not interfere with a user's business, in consideration of the usage status of the client terminal. Has been. The management apparatus described in Patent Document 1 records the usage status of the client terminal as an index value and records it. Then, based on the recorded index value, a time zone (scheduled time zone) in which the client terminal can execute the management program is determined. Then, an instruction to execute the management program is transmitted to the client terminal during the determined scheduled time zone. In addition, the management device described in Patent Literature 1 preferentially selects a time zone when there are fewer information processing devices that execute the management program in the same time zone as the scheduled time zone.

International Publication No. WO2005 / 033940

  Since the management apparatus described in Patent Document 1 determines the scheduled time zone according to the usage status of the information processing apparatus, the load on the information processing apparatus and the communication line can be reduced. However, when there are a large number of information processing apparatuses, the load on the management apparatus may increase.

  Accordingly, an object of the present invention is to provide a data distribution apparatus, a data distribution method, and a data distribution program that can distribute and reduce a load when distributing data such as a program.

  A data distribution apparatus according to the present invention includes a load value calculating unit that calculates a load value of a terminal, a load value totaling unit that totals a load value per unit time on a date of the terminal and a load value per unit time on a day of the week, The day of the week and the time zone where the load value becomes the minimum are specified based on the aggregation result for the load, the specified day of the week and the time zone are set as the first minimum load value date, and the load is determined based on the aggregation result regarding the date. The date and time zone in which the value is minimized are specified, the specified date and time zone are set as the second load value minimum date and time, and the load value at the first load value minimum date and the second load value minimum date and time The distribution date determination means that determines the first delivery date and time with the smaller load value, the second delivery date and time, and the data is delivered to the terminal at the first delivery date and the terminal at the first delivery date and time. Unable to deliver data When it is characterized in that it comprises a distribution means for distributing the data to the second time distribution date.

In the data distribution method according to the present invention, the load value calculation means calculates the load value of the terminal, and the load value aggregation means totals the load value for each unit time on the date of the terminal and the load value for each unit time on the day of the week. The delivery date and time determining means identifies the day of the week and the time zone in which the load value is minimum based on the tabulation result on the day of the week, sets the identified day of the week and time zone as the first load value minimum date and time, and The date and time zone in which the load value is minimized are identified based on the tabulation results, the identified date and time zone are set as the second load value minimum date and time, and the first load value minimum date and time Compare the load value at the minimum load value date and time, decide the one with the smaller load value as the first delivery date and time, decide the other as the second delivery date and time, and the delivery means will deliver the data to the terminal at the first delivery date and time Data on the device at the first delivery date and time If it can not trust is characterized by distributing the data to the second annual distribution date.

The data distribution program according to the present invention includes a computer for calculating a load value of a terminal, a process of totaling a load value for each unit time on a date of the terminal and a load value for each unit time on a day of the week, and a connection state holding unit. Then, based on the processing for holding the connection time information of the terminal for each day of the week and date and the tabulation result regarding the day of the week , the day of the week and the time zone where the load value is the minimum is specified, Based on the process of setting the minimum load value date and time and the tabulated results on the date, the date and time zone where the load value is minimized are specified, and the specified date and time zone are set as the second minimum load value date and time. Comparing the load value in the first load value minimum date and time and the second load value minimum date and time, the one with the smaller load value is determined as the first distribution date and the other is determined as the second distribution date and time Place to do If, to deliver data to the terminal for the first time distribution date, if it could not deliver data to the terminal first run time to execute a process of delivering data to the second time distribution date, the minimum first load value In the process of setting the date and time, based on the connection time information, on the day of the week when the load value becomes the minimum, the latest time zone among the times when the terminal is in the connected state is specified, and the specified time zone is the first load. In the process of setting the second minimum load value date and time in the process of setting the minimum value date and time, the date when the load value is minimum based on the connection time information, An early time zone is specified, and the specified time zone is set to the time zone of the second minimum load value date and time .

  According to the present invention, it is possible to distribute and reduce the load on the server side and the client terminal side when distributing data such as programs.

1 is a block diagram showing a first embodiment of a data distribution system including a data distribution apparatus according to the present invention. It is a block diagram which shows the structure of 1st Embodiment of a data delivery apparatus. It is explanatory drawing which shows an example of the connection information which a connection state holding means hold | maintains. It is explanatory drawing which shows an example of the information which shows a response | compatibility with a message | telegram classification and a weight. It is explanatory drawing which shows an example of the total result of the load value of a client terminal. It is a block diagram which shows the principal part of the data delivery apparatus by this invention.

Embodiment 1. FIG.
A first embodiment of the present invention will be described below with reference to the drawings. Here, a data distribution apparatus that distributes a program as data will be described.

  FIG. 1 is a block diagram showing a first embodiment of a data distribution system including a data distribution apparatus according to the present invention. FIG. 2 is a block diagram showing the configuration of the first embodiment of the data distribution apparatus.

  As shown in FIG. 1, the data distribution system includes a data distribution device (center server) 10 and client terminals 30, 40, and 50. The center server 10 is connected to client terminals 30 to 50 via the network 20. In FIG. 1, three client terminals 30 to 50 are illustrated, but any number of client terminals may be provided.

  As shown in FIG. 2, the center server 10 includes a connection state holding unit 11, a load value calculating unit 12, a load value totaling unit 13, a distribution date determination unit 14, and a distribution unit 15. Note that the connection state holding unit 11, the load value calculating unit 12, the load value totaling unit 13, the distribution date determination unit 14, and the distribution unit 15 are realized by a CPU or the like provided in the center server 10.

  The connection state holding unit 11 holds connection information for each client terminal.

  FIG. 3 is an explanatory diagram illustrating an example of connection information held by the connection state holding unit 11.

  The connection information includes connection state information indicating a connection state between the center server 10 and the client terminal. Further, the connection information includes connection time information indicating a time when the client terminal is connected to the center server 10 (connection time) and a time when the client terminal is disconnected (disconnection time). The connection time and the connection time are stored in the connection time information for each day of the week and date. In the present embodiment, “date” indicates “what day” of what month and what day.

  FIG. 3A is an example of connection state information of the client terminal 30. FIG. 3B is an example of connection time information of the client terminal 30.

  The load value calculation unit 12 calculates a load value for each client terminal. In this embodiment, the load value calculation means 12 calculates the load value of the client terminal from the weight for the message. The weight corresponds to the CPU usage rate of the client terminal from when the message is created until communication is performed. Since not all client terminals have the same model and the same ability, the weight for the message is set for each client terminal.

  FIG. 4 is an explanatory diagram illustrating an example of information (weight correspondence information) indicating correspondence between message types and weights. The information shown in FIG. 4 is stored in advance for each client terminal in a storage unit (not shown) included in the center server 10.

  The load value totaling means 13 totals the load value for each unit time on the same date and the same day of the week as the current date and time. The load value totaling means 13 totals the load values for each client terminal and stores the total results in the storage unit. In the present embodiment, the unit time is 15 minutes.

  The distribution date and time determination means 14 determines the date and time at which the program is distributed for each client terminal from the load value tabulation result. Further, the delivery date determination unit 14 holds information indicating the line speed between the center server 10 and each client terminal for each client terminal.

  The distribution unit 15 distributes the program to each client terminal. The distribution unit 15 distributes the program according to the connection state of the client terminal when executing the program distribution. The distribution unit 15 holds the distribution result of the program for each client terminal.

  The client terminals 30 to 50 are, for example, personal computers (PCs). The client terminals 30 to 50 transmit various messages such as an inquiry message and a registered message to the center server 10. Further, the program distributed from the center server 10 is received.

  Next, the operation of this embodiment will be described. Here, the operation in which the center server 10 distributes the program to the client terminal 30 will be described.

  When the client terminal 30 is connected via the network 20, the connection state holding unit 11 sets the connection state information of the connected client terminal 30 to “connected”. The connection state holding means 11 stores the connection time in the connection time information corresponding to the day of the week and the date when the connection is the first connection on that day.

  When the client terminal 30 is disconnected, the connection state holding unit 11 sets the connection state information of the client terminal 30 to “not connected”. Then, the disconnection time is stored in the connection time information corresponding to the day of the week and date.

  When the center server 10 receives a message from the client terminal 30 via the network 20, the load value calculation unit 12 determines the weight of the received message based on the weight correspondence information shown in FIG. For example, when the center server 10 receives an A reference message, the load value calculation unit 12 determines that the weight of the A reference message is “5”.

  The load value calculation means 12 calculates the load value of the client terminal 30 based on the determined message weight. In the present embodiment, the load value is a value obtained by multiplying the weight by an equal magnification. For example, when the center server 10 receives an A reference message, the load value calculation means 12 calculates the load value of the client terminal as “5” from the weight “5” of the A reference message. Note that the load value is not a value obtained by multiplying the weight by an equal value, but may be a value calculated by another method based on the weight.

  The load value totaling means 13 totals the load value of the client terminal 30 for each unit time of the same date and the same day of the week as the current date and time. Specifically, the load value totaling unit 13 adds the load value calculated by the load value calculating unit 12 to the total result of the same time zone on the same day of the week as the current date and time and the same time zone of the same date. It should be noted that the load value totaling means 13 continues to count without initializing the totaled load value even after the program is distributed.

  Each time the center server 10 receives a message from the client terminal 30, the load value calculation unit 12 and the load value totalization unit 13 repeatedly perform load value calculation and load value totalization processing.

  FIG. 5 is an explanatory diagram illustrating an example of a total result of load values of the client terminal 30. FIG. 5A shows the result of totaling the load values for each day of the week. FIG.5 (b) shows the result which totaled the load value for every date.

  When a program scheduled to be distributed is registered in the center server 10, the distribution date / time determining means 14 determines the time required to distribute the program from the program size of the program scheduled to be distributed and the line speed for each client terminal (hereinafter, estimated distribution required time). Calculated). Then, it is calculated how many times the estimated required time for distribution is in unit time. That is, the number of continuous unit times required for program distribution (hereinafter referred to as the continuous number) is calculated.

  The distribution date and time determination unit 14 specifies the day of the week and the time zone in which the load value is minimum based on the tabulation result for each day of the week totaled by the load value tabulation unit 13.

  Specifically, the delivery date and time determination means 14 determines from the time when the client terminal 30 is in a connected state for each day of the week, that is, from the connection time, based on the counting result for each day of the week and the connection time information of the client terminal 30. The load value per unit time is added for the continuous number of times until the cutting time. Then, the day of the week with the smallest added load value and the time zone on that day are specified. Hereinafter, the specified day of the week and time zone are referred to as “first load value minimum date and time”.

  The time zone at the first minimum load value date and time may be the latest time zone on the specified day of the week (the latest time zone among the times when the client terminal is in the connected state).

  Similarly, the delivery date and time determining means 14 specifies the date and time zone at which the load value is minimum based on the counting results for each date counted by the load value counting means 13.

  Specifically, the distribution date and time determination unit 14 loads the load value of the unit time between the connection time and the disconnection time for each date based on the aggregation result for each date and the connection time information of the client terminal 30. Is added for the number of consecutive. And the date when the added load value becomes the minimum and the time zone on that date are specified. Hereinafter, the specified date and time zone are referred to as “second minimum load value date”.

  Note that the time zone at the second minimum load value date and time may be the earliest time zone on the specified date (the earliest time zone in which the client terminal is in the connected state).

  Alternatively, the time zone at the first minimum load value date and time may be the earliest time zone on the specified day of the week, and the time zone at the second minimum load value date and time may be the latest time zone on the specified date.

  The distribution date determination unit 14 compares the load value at the first minimum load value date with the load value at the second minimum load value date.

  When the load values are different, the distribution date determination means 14 determines the one with the smaller load value as the initial distribution date and the larger one as the spare distribution date (second distribution date). For example, when the load value at the first load value minimum date and time is smaller, the first load value minimum date and time becomes the first delivery date and time, and the second load value minimum date and time becomes the second delivery date and time.

  When the load values are the same, the distribution date and time determination means 14 determines the first distribution date and time as the first distribution date and the other one closer to the date on which the program distribution starts, and the second distribution date and time.

  Next, the operation of the center server 10 at the time of program distribution will be described.

  The distribution unit 15 acquires the connection state information of the client terminal 30 from the connection state holding unit 11 when the first distribution date and time of the client terminal 30 is reached. Then, it is determined whether or not the client terminal 30 is in a connected state.

  The distribution unit 15 starts program distribution when the client terminal 30 is in a connected state. The distribution unit 15 sets the distribution result of the client terminal 30 to “distributed” after the program distribution is completed.

  The distribution means 15 does not perform program distribution when the client terminal 30 is in a disconnected state. Then, the distribution result of the client terminal 30 is set to “undistributed”.

  When the second distribution date / time of the client terminal 30 is reached and the distribution result of the client terminal 30 is “undistributed”, the distribution unit 15 acquires the connection state information of the client terminal 30 from the connection state holding unit 11. To do. When the client terminal 30 is in a connected state, program distribution is started. The distribution unit 15 sets the distribution result of the client terminal 30 to “distributed” after the program distribution is completed.

  The delivery date and time determination means 14 re-enters the first delivery date and the second delivery date and time when the delivery result of the client terminal 30 is “undelivered” even if the delivery means 15 performs the first delivery and the second delivery. To decide. At this time, when the aggregation results shown in FIGS. 5A and 5B are updated, the first delivery date and the second delivery date are updated.

  The delivery date determination means 14 and the delivery means 15 repeatedly execute the above operations until the delivery results of all the client terminals connected to the center server 10 become “delivered”.

  As described above, in the present embodiment, since the first delivery date and time and the second delivery date and time of program delivery are determined from different indicators of date and day of the week, the program delivery load in the center server 10 is distributed. be able to.

  Further, when determining the program delivery date and time, the time zone at the first load value minimum date and time is the latest time zone on the specified day of the week, and the time zone at the second load value minimum date and time is the most on the specified date. By setting the time zone earlier, the load of program distribution can be further distributed.

  In addition, when determining the program distribution date and time, a preliminary distribution date and time (second distribution date and time) is determined at the same time. Therefore, the number of processes for determining the program distribution date and time can be reduced, and the load on the center server 10 can be reduced.

  In addition, weights are provided for messages received from client terminals, and the load values of unit time for each date and day of the week are tabulated. That is, the load value is calculated from the weight corresponding to the CPU usage rate and statistically tabulated. Therefore, it is possible to accurately determine the CPU usage rate of the client terminal. Therefore, since the program distribution date and time can be set at the date and time when the CPU usage rate of the client terminal is low, the load on the client terminal at the time of program distribution can be reduced.

  In addition, since the load values for each client terminal are continuously counted without being initialized even after program distribution, it is possible to perform program distribution in consideration of the tendency of dates and times when the CPU usage rate is low. For example, if the client terminal is a convenience store cashier terminal, by continuously counting load values statistically, it is possible to identify busy days, days of the week, and date / time, and execute program distribution at times when the business is not busy can do.

  In addition, since the line speed is held for each client terminal and the required time for distribution for each client terminal can be predicted, a more appropriate program distribution date and time can be determined.

  Further, when the distribution destination client terminal is not connected, for example, when the client terminal is turned off, the program distribution is not executed. Therefore, useless program distribution can be reduced, and an increase in line load between the center server 10 and each client terminal can be prevented.

  In addition, since the program distribution result for each client terminal is held, undelivered client terminals can be identified. Since the program distribution is repeatedly executed until the program distribution result of the client terminal becomes “distributed”, it is possible to reliably distribute the program to all the client terminals.

  In the present embodiment, the case where the center server 10 distributes the program has been described. However, the data distributed by the center server 10 may be other than the program.

  FIG. 6 is a block diagram showing the main part of the data distribution apparatus according to the present invention. As shown in FIG. 6, the data distribution apparatus (corresponding to the center server 10 shown in FIG. 1) calculates the load value of the terminal (corresponding to the client terminals 30, 40, and 50 shown in FIG. 1). Means 120 (corresponding to the load value calculating means 12 in the center server 10 shown in FIG. 2), and load value totaling means 130 for totaling the load value per unit time on the date of the terminal and the load value per unit time on the day of the week ( 2) and the day of the week and the time zone where the load value is minimized based on the tabulation result regarding the day of the week. 1 is set to the minimum date and time of load value, and the date and time zone when the load value is minimum is specified based on the date-related tabulation result, and the specified date and time zone is specified as the second minimum load value date and time. Distribution in which the load value in the first load value minimum date and the second load value minimum date is compared, the one with the smaller load value is determined as the first distribution date, and the other is determined as the second distribution date When the date and time determining means 140 (corresponding to the distribution date and time determining means 14 in the center server 10 shown in FIG. 2) and the data are delivered to the terminal at the first delivery date and time, and the data cannot be delivered to the terminal at the first delivery date and time. Distribution means 150 (corresponding to the distribution means 15 in the center server 10 shown in FIG. 2) for distributing data at the second distribution date and time.

  In the above embodiment, the following data distribution apparatus is also disclosed.

(1) A data distribution device in which the load value calculation unit 120 uses a value obtained by weighting a message received from a terminal as a load value.

(2) A connection state holding unit (corresponding to the connection state holding unit 11 in the center server 10 shown in FIG. 2) for holding the connection time information of the terminal for each day of the week and date is provided. Based on the information, on the day of the week when the load value is minimized, the latest time zone is identified among the times when the terminal is in the connected state, and the identified time zone is set as the time zone of the first minimum load value date and time A data distribution device that identifies the earliest time zone of the time when the terminal is in the connected state on the date when the load value is minimized, and sets the identified time zone as the time zone of the second load value minimum date and time .

(3) When the first load value minimum date and time and the second load value minimum date and time are the same, the distribution date determination means 140 determines the one closest to the current date as the first distribution date and the other A data distribution device that determines the second distribution date and time.

(4) The distribution unit 150 holds the data distribution result of the terminal, and the distribution date determination unit 140 determines that the terminal data distribution result is undelivered after the second distribution date has elapsed. A data distribution apparatus for newly determining the first distribution date and the second distribution date.

(5) A data distribution apparatus in which the distribution unit 150 distributes a program.

DESCRIPTION OF SYMBOLS 10 Center server 11 Connection state holding means 12, 120 Load value calculation means 13, 130 Load value totaling means 14, 140 Delivery date determination means 15, 150 Distribution means 20 Network 30, 40, 50 Client terminal

Claims (10)

Load value calculating means for calculating the load value of the terminal;
Load value totaling means for totaling the load value per unit time on the date of the terminal and the load value per unit time on the day of the week;
Based on the tabulation results for the day of the week, identify the day of the week and the time zone where the load value is minimum, set the identified day of the week and time zone as the first minimum load value date,
Based on the date-related tabulation results, specify the date and time zone where the load value is minimum, set the specified date and time zone as the second minimum load value date,
A distribution date and time at which the load value at the first load value minimum date and the second load value minimum date and time are compared, and the smaller load value is determined as the first distribution date and the other is determined as the second distribution date and time. A determination means;
Delivery means for delivering data to the terminal at the first delivery date and time and delivering data at the second delivery date when the data could not be delivered to the terminal at the first delivery date and time. Data distribution device. Load value calculation means
The data distribution apparatus according to claim 1, wherein a load value is calculated according to a weight determined for a message received from a terminal. It has a connection state holding means for holding the connection time information of the terminal for each day of the week and date,
Delivery date determination means
Based on the connection time information, on the day of the week when the load value becomes the minimum, the latest time zone among the times when the terminal is in the connected state is specified, and the specified time zone is the time of the first load value minimum date and time. In the date when the load value is minimized, the earliest time zone of the time when the terminal is in the connected state is specified, and the specified time zone is set as the time zone of the second minimum load value date and time. The data distribution apparatus according to claim 1 or 2. Delivery date determination means
If the first load value minimum date and time and the second load value minimum date and time are the same, the one closer to the current date and time is determined as the first distribution date and the other is determined as the second distribution date and time. The data distribution device according to any one of claims 1 to 3. Distribution means
Holds information indicating the data distribution result of the device,
Delivery date determination means
After Second distribution date passed, billing information indicating the delivery result data of the terminal when the identification information indicates that the undelivered is newly determined initial distribution date and second time distribution date of the terminal The data distribution apparatus according to any one of claims 1 to 4. The data distribution apparatus according to any one of claims 1 to 5, wherein the distribution unit distributes the program. The load value calculation means calculates the load value of the terminal,
The load value counting means totals the load value per unit time on the date of the terminal and the load value per unit time on the day of the week,
The delivery date determination means
Based on the tabulation results for the day of the week, identify the day of the week and the time zone where the load value is minimum, set the identified day of the week and time zone as the first minimum load value date,
Based on the date-related tabulation results, specify the date and time zone where the load value is minimum, set the specified date and time zone as the second minimum load value date,
Compare the load value at the first load value minimum date and time and the second load value minimum date and time, determine the smaller load value as the first delivery date and time, and determine the other as the second delivery date and time,
The distribution unit distributes data to the terminal at the first distribution date and time, and distributes data at the second distribution date and time when the data cannot be distributed to the terminal at the first distribution date and time. Data delivery method. The data distribution method according to claim 7, wherein the load value calculating means calculates the load value according to a weight determined for the message received from the terminal. On the computer,
Processing to calculate the load value of the terminal;
A process of aggregating the load value per unit time on the date of the terminal and the load value per unit time on the day of the week;
A process of holding connection time information of the terminal for each day of the week and date in the connection state holding means,
A process of identifying a day of the week and a time zone in which the load value is minimum based on the aggregation result regarding the day of the week, and setting the identified day of the week and time zone as the first load value minimum date and time;
A process for identifying a date and a time zone in which the load value is minimized based on the aggregation result regarding the date, and setting the identified date and time zone as a second load value minimum date and time;
A process of comparing load values in the first load value minimum date and time and the second load value minimum date and time to determine the smaller load value as the first delivery date and the other as the second delivery date and time. When,
Deliver data to the terminal at the first delivery date and time, and if the data could not be delivered to the terminal at the first delivery date and time, execute processing to deliver data at the second delivery date and time ,
In the process of setting the first load value minimum date and time,
Based on the connection time information, on the day of the week when the load value becomes the minimum, the latest time zone among the times when the terminal is in the connected state is specified, and the specified time zone is the time of the first load value minimum date and time. Let the band set,
In the process of setting the second load value minimum date and time,
Based on the connection time information, on the date when the load value becomes minimum, the earliest time zone among the times when the terminal is in the connected state is specified, and the specified time zone is the time of the second load value minimum date and time. Data distribution program for setting the band . On the computer,
In the process of calculating the load value of the terminal,
The data distribution program according to claim 9, wherein a load value is calculated according to a weight determined for a message received from a terminal.

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