JP2007219963A - Information-distribution server device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a load on an information communication network and quickly distribute information notice by means of new information distribution without retaining retry notice for the information notice in a server. <P>SOLUTION: An information-distribution server device 2 is provided with; a reception means which receives information addressed to a prescribed client device 4 from an information-distribution device 1; a storage means which stores the received information; a notice means which notifies the prescribed client device, via a prescribed communication network, that the information addressed to the prescribed client device has been received; a response means which receives a response to the notice from the client device; a retry means which instructs the notice means to retry the notice when there is no response from the client device; and a control means which restricts the number of times of notice transmission per unit time made by the notice means to a prescribed number or less and controls the notice means so that the notice means may transmit the notice made by the notice means that the reception means has newly received information, with a priority higher than the instructions from the retry means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information distribution server device, and more particularly, to an information distribution server device that distributes information to a client device such as a PC, PDA, or mobile phone via an information communication network that is used in combination with other services other than information distribution. About.

  Conventionally, when distributing information to a client device such as a PC, PDA, mobile phone, etc. via an information communication network, in order to avoid the trouble of confirming the presence / absence of information distribution from the user side of the client device, the system side To the client device, notification that the information has been distributed is sequentially performed. In addition, since the client device is offline or the information communication network is busy, when the notification is not normally received, the information notification (retry) is performed again after a while.

  In recent years, information communication networks have been used for various services such as digital content download, online trade, ticket reservation, etc., and various systems that provide services via information communication networks each stagnate other services. In order to reduce the communication cost and communication time on the user side who uses the service, it is required that the information communication network is not overloaded.

  On the other hand, the use of information distribution via the information communication network is not limited to individuals, but extends to the enterprise, and uses that place a high load on the information communication network, such as simultaneous notifications addressed to client devices of many employees Has also been done.

  In view of the above points, while the amount of transmission to the information communication network per unit time is limited, on the other hand, there is a need for a technology for efficiently distributing information while the amount of information distribution requests is increasing. It had been.

  And as patent document 1, as a prior art which distributes information effectively, the sender of an e-mail gives importance to the e-mail, and the e-mail distribution device transmits e-mail in descending order of importance. Thus, techniques have been proposed to reduce the possibility of delaying the delivery of important or urgent emails.

  Further, Patent Document 2 divides and stores input information into priority information and non-priority information, outputs priority information immediately, and outputs non-priority information collectively when a certain number is reached. A method for preventing delay in transmission of priority information has been proposed.

Japanese Patent Laid-Open No. 4-185032 Japanese Patent Laid-Open No. 2-60259

  However, the conventional technology has a problem that if there is a large number of information distribution requests in a short time and an information notification is transmitted without limitation, the information communication network is overloaded. Also, if a large amount of information notification fails and is retried, the retry notification stays in the server, so the information notification by new information delivery will be in a standby state until the retry is transmitted There was a problem.

  Therefore, the present invention has been made in view of the above-described conventional problems, and while reducing the load on the information communication network, even when a retry is performed, a notification for the retry may stay in the server. It is another object of the present invention to provide an information distribution server device capable of promptly distributing an information notification by new information distribution.

  In order to achieve the above object, the present invention provides an information distribution server device, receiving means for receiving information addressed to a predetermined client device from the information distribution device, and storage means for storing information received by the receiving means. A notification means for notifying the predetermined client apparatus via the predetermined information communication network that the reception means has received information addressed to the predetermined client apparatus; and a notification from the client apparatus for notification from the notification means. If there is no response from the client device, the response means for instructing the notification means to retry the notification, and the number of notifications transmitted per unit time by the notification means are constant values. In addition to the following, an instruction from the retry means is sent to the notification means that the reception means has newly received information. Characterized in that than notification by a control means for controlling to transmit with priority.

  According to the present invention, the control means limits the number of notifications transmitted per unit time by the notification means to a predetermined value or less, and notifies the reception means that the reception means has newly received information by the notification means. Since the transmission is prioritized over the notification based on the instruction from the retry means, the load on the information communication network is maintained below a certain level, and the possibility of interfering with other services using the information communication network is reduced. Can do. Further, even when a notification is retried, the notification for the retry does not stay in the server, and the information notification by new information distribution does not enter a standby state until the retry is transmitted.

  In the information distribution server device, each time the notification unit transmits the notification, the notification unit confirms the transmission queue in which the notification addressed to the client device is accumulated, and if there is no notification recorded in the transmission queue, A notification that the receiving means has newly received information can be sent to a predetermined client device. As a result, it is possible to continue sending new information notifications preferentially to the client device.

  In the information distribution server device, each time the notification is transmitted, the retry means checks the transmission queue in which the notification addressed to the client device is accumulated, and if there is no notification recorded in the transmission queue. The notification means can be instructed to retry the notification. This makes it possible to continue sending information notifications by retry.

  Further, in the information distribution server device, the retry unit periodically extracts a predetermined number of notifications to the predetermined client device that have passed a predetermined time since the previous notification, and instructs the notification unit to retry the notification. Can do. As a result, information notification by retries is interrupted only for a certain number at regular intervals, so that it is possible to avoid that retries are not performed at all.

  In the information distribution server device, the retry unit does not instruct the notification unit to retry the notification when the response unit receives a response from the client device to the notification from the notification unit. Can do.

  As described above, according to the present invention, the load applied to the information communication network can be maintained below a certain level, and information notification by new information distribution does not enter a standby state until the retry portion is transmitted. An information distribution server device can be provided.

  FIG. 1 shows an embodiment of an information distribution system including an information distribution server device (hereinafter referred to as “server device”) according to the present invention. A plurality of information distribution devices 1 and a server device 2 are connected to a network. In addition, the server device 2 and a plurality of client devices (hereinafter simply referred to as “clients”) 4 are connected via the information communication network 3.

  The operations of the server device 2 and the client device 4 in the above system are roughly as follows.

  When the server device 2 receives the information addressed to the client device 4 from the information distribution device 1, the server device 2 accumulates the information content in the internal storage device of the server device 2, and sends the information arrival via the information communication network 3 to a predetermined amount The client device 4 is notified. When notifying the client device 4 of the information, the server device 2 stores the address of the client device 4 that is the notification destination and the notification time, and holds it as a retry list in the internal memory.

  When the client device 4 receives the information notification from the server device 2, it returns a response to the server device 2 and acquires information from the server device 2 at an arbitrary timing.

  When the server apparatus 2 receives the response from the client apparatus 4, the server apparatus 2 deletes the predetermined client apparatus 4 address and notification time from the retry list.

  The server device 2 periodically checks the retry list, and after notifying the client device 4 of information, when there is no response from the client device 4, the server device 2 retries transmission of the information notification to the client device 4.

  Next, the operation of the entire system including the server device 2 according to the present invention will be described in detail with reference to FIGS. 1 and 2.

  In the flowchart (Start 1) of FIG. 2, when the server apparatus 2 receives new information from the information distribution apparatus 1 (step S11), the server apparatus 2 accumulates the received information content in the internal storage device and then notifies the client apparatus 4 as a notification destination. And the current time are registered in the retry list (step S12), and information notification messages are stored in the transmission queue (step S13). The information notification accumulated in the transmission queue is transmitted to a predetermined client device 4 as needed, but is transmitted so that the number of transmissions per unit time does not exceed a predetermined value (step S14). ).

  After transmitting the information notification from the transmission queue, the server device 2 checks whether or not transmission notifications to be transmitted are accumulated in the queue (step S15). If the transmission queue is not empty in step S16, the server device 2 transmits again. Transmission of information notification from the queue is continued (step S14). On the other hand, if the transmission queue is empty in step S16, the process proceeds to a retry list confirmation process (step S22).

  In the flowchart (Start 2) of FIG. 2, the server device 2 reads the retry list at regular time intervals (step S21), compares the information notification time in the list with the current time, and a fixed time has elapsed since the previous information notification. A certain number of client devices 4 are extracted (step S22). If no client device 4 is extracted in step S22, it is not necessary to retry the information notification, so the process is interrupted and the process returns to step S21.

  On the other hand, when the client device 4 is extracted in step S22, the information notification time in the retry list is updated with the current time (step S24), and the information notification as a retry is accumulated in the transmission queue (step S25). Note that the number of information notifications accumulated in step S25 matches the number of clients extracted in step S22. Information notifications for retries accumulated in the transmission queue are sequentially transmitted to the client device 4 in step S14 with a transmission restriction per unit time, as in the case of receiving new information.

  In step S16, if the transmission queue is not empty, the transmission of information notification from the transmission queue is continued. Therefore, when new information distribution from the information distribution apparatus 1 continues to be transmitted, new information is transmitted. Information notification by distribution will continue to be transmitted. When the information distribution from the information distribution apparatus 1 is interrupted, the transmission queue of the server apparatus 2 is also emptied, and the process proceeds to the confirmation of the retry list, that is, the information notification process for the retry. However, since a certain number of information notifications are transmitted at the timing of one retry, the information notification for the retry will not continue to be transmitted while waiting for the new information notification.

  In the flowchart (Start 3) of FIG. 2, when the server device 2 receives the response from the client device 4 after transmitting the information notification to the client device 4 (step S31), it is considered that the notification has been normally completed. The information of the predetermined client device 4 is deleted from the retry list.

  Through the processing described above, the server apparatus 2 according to the present invention continues to transmit new information notifications to the client apparatus 4 preferentially as long as new information is received. However, since the information notification by the retry interrupts only for a certain number at a certain interval, the retry is not performed at all.

  On the other hand, if new information distribution stops, information notification by retry will continue to be sent. However, when new information delivery is received even during successive retries, priority is given in a form of interruption.

  Furthermore, even when a large number of client devices 4 to be retried are registered in the retry list, new information distribution is not significantly hindered. Accordingly, it is possible to realize efficient information distribution in which a new information notification is preferentially processed under a state in which transmission restriction to the information communication network 3 is imposed, and transmission waiting time is reduced.

It is a block diagram which shows the structure of the information delivery system containing the server apparatus concerning this invention. It is a flowchart which shows operation | movement of the information delivery system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information distribution apparatus 2 Server apparatus 3 Information communication network 4 Client apparatus

Claims (5)

Receiving means for receiving information addressed to a predetermined client device from the information distribution device;
Storage means for storing the information received by the receiving means;
Notification means for notifying the predetermined client device via the predetermined information communication network that the receiving means has received information addressed to the predetermined client device;
Response means for receiving a response from the client device in response to the notification from the notification means;
When there is no response from the client device, a retry means for instructing the notification means to retry the notification, and the number of notifications transmitted per unit time by the notification means are limited to a predetermined value or less, and the notification means An information distribution server device comprising: a control unit configured to control so that a notification that the receiving unit has newly received information is given priority over a notification based on an instruction from the retry unit.   Each time the notification unit transmits the notification, the notification unit checks the transmission queue in which the notifications for the client device are accumulated. If there is no notification recorded in the transmission queue, the reception unit newly adds information. The information distribution server device according to claim 1, wherein a notification that a message is received is sent to a predetermined client device.   Each time the retry unit transmits the notification, the retry unit checks the transmission queue in which the notification addressed to the client device is accumulated. If there is no notification recorded in the transmission queue, the retry unit notifies the notification unit to retry the notification. The information distribution server device according to claim 1, wherein:   The retry means periodically extracts a predetermined number of notifications to the predetermined client device that have passed a predetermined time from the previous notification, and instructs the notification means to retry the notification. 2. The information distribution server device according to 2 or 3.   The retry means does not instruct the notification means to retry the notification when the response means receives a response from the client device to the notification from the notification means. An information distribution server device according to any one of the above.

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