JP2010191601A - Numbered ticket issuing server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for causing a service providing server to stably and efficiently provide services. <P>SOLUTION: The numbered ticket issuing server 11 includes a server monitoring means which monitors the load of the service providing server which provides a service in response to a request from a client 2; an immediate providing possibility determination means which determines whether the service providing server can immediately provide the service; a providing start time calculation means which calculates, when the immediate providing possibility determination means determines that the service providing server cannot immediately provide the service, a providing start time of the service by the service providing server; an immediate interruption means which causes, when the immediate providing possibility determination means determines that the service providing means can immediately provide the service, the service providing means to immediately provide the service; and a numbered ticket issuing means which issues a virtual numbered ticket including the providing start time or a waiting time up to the providing start time. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a numbered ticket issuing server.

  As a technology that avoids concentration of access to the server that provides the service (hereinafter referred to as “service providing server”) and prevents the service providing server from degrading its processing capacity and system down due to congestion, a virtual including the waiting time until the service is provided Has been proposed (see Non-Patent Document 1, for example).

"Proposal of an access control system using numbered ticket issuing function" Authors Goshi Uemura, Yasuhiko Sugano, Hideyuki Kozu, Izumi Okamoto, Keigo Takehara, Gen Nakamura, announced on 26th September 2008, pages 81-86

  However, in the technique described in Non-Patent Document 1, since the waiting time of the issued numbered ticket cannot be changed, the processing capacity of the service providing server at the time of waiting time assumed at the time of issuing the numbered ticket and when the waiting time has elapsed When the processing capability of the actual service providing server deviates, there is a problem that the service providing server cannot provide the service stably and efficiently. For example, when the expected processing capability cannot be actually secured, the service providing server is overloaded, and thus there is a possibility that congestion or system down occurs in the service providing server and the service cannot be provided stably. On the other hand, if the processing capacity far exceeding the expected level can be actually secured, the service providing server will have a low load, so the processing capacity may not be used effectively and the service may not be provided efficiently. .

  The present invention has been made in view of the above-described problems, and provides a technique for allowing a service providing server to provide a service stably and efficiently even when the processing capability of the service providing server fluctuates. For the purpose.

  In order to solve the above problem, a numbered ticket issuing server according to one aspect of the present invention has a request for server monitoring means for monitoring a load of a service providing server that provides a service in response to a request from a client. In this case, based on the load of the service providing server monitored by the server monitoring means, the service providing server determines whether the service providing server can provide the service immediately, and provides the service by the immediate providing availability determining means. When it is determined that the server cannot provide the service immediately, the service providing server can provide the service immediately by the provision start time calculating means for calculating the service provision start time by the service providing server and the immediate provision availability determining means. Immediate interrupt that causes the service providing server to provide the service immediately when it is determined And the step, characterized in that it comprises a ticket issuing means for issuing a virtual ticket, including the waiting time until the launch time or provide start time.

  In the numbered ticket issuing server, the immediate interruption means may notify the service providing server of a service immediately by notifying the numbered ticket issuing means of the current time as the provision start time. The immediate interruption means may cause the service providing server to immediately provide a service by transferring the request to the service providing server.

  An object of the present invention is to provide a technique for causing a service providing server to provide a service stably and efficiently even when the processing capability of the service providing server varies.

It is an example of the functional block diagram of the numbered ticket issuing server 1 by embodiment of this invention. It is a flowchart which shows operation | movement of the numbered ticket issuing server 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the numbered ticket issuance server 1 includes a numbered ticket issuance processing unit 10 (in charge of the numbered ticket issuance means of the present invention) and a server load control unit (the server monitoring means of the present invention, immediate provision availability determination means). In charge of providing start time calculation means and immediate interruption means).

  The numbered ticket issue processing unit 10 receives a service provision request from the client 2. The numbered ticket issue processing unit 10 that has received the service provision request notifies the server load control unit 20 of the service provision request.

  In addition, when the numbered ticket issue processing unit 10 acquires the service provision start time (hereinafter referred to as “service provision start time”) by the service provision server 3 from the server load control unit 20, the service provision start time or the service provision start A numbered ticket including a waiting time until the time (hereinafter referred to as “service waiting time”) is issued to the client 2 (numbered ticket issuing means).

  The server load control unit 20 monitors the load of the service providing server 3 in real time (server monitoring means). When the server load control unit 20 receives a service provision request from the numbered ticket issuance processing unit 10, the server load control unit 20 determines whether or not the service provision server 3 can immediately provide a service based on the load of the service provision server 3 being monitored. Judgment (immediate provision availability determination means).

  When determining that the service providing server 3 cannot provide the service immediately, the server load control unit 20 calculates a service providing start time by the service providing server 3 (providing start time calculating means). The server load control unit 20 that has calculated the service provision start time notifies the numbered ticket issue processing unit 10 of the calculated service provision start time.

  The server load control unit 20 determines (calculates) the service provision start time so as not to be overloaded even when the processing capacity is reduced, in order to ensure a margin for fluctuations in the processing capacity of the service providing server 3. For example, the server load control unit 20 determines the service provision start time so that the load is commensurate with the processing capacity that is considered to be secured at the minimum, based on the decrease amount of the server processing capacity to be assumed. As a result, it is possible to guarantee the provision of a service to the user who accesses based on the issued numbered ticket at all times against the assumed decrease in server processing capacity.

  On the other hand, when it is determined that the service providing server 3 can provide the service immediately, the server load control unit 20 causes the service providing server 3 to provide the service immediately (immediate interrupt means). For example, the server load control unit 20 informs the service providing server 3 of the service immediately by notifying the numbered ticket issuing processing unit 10 of the current time as the service providing start time. Further, for example, by transferring a service provision request from the client 2 to the service provision server 3, the service provision server 3 is immediately provided with the service.

  Hereinafter, the operation of the numbered ticket issuing server 1 will be described. The flowchart shown in FIG. 2A starts when the numbered ticket issuance processing unit 10 receives a service provision request from the client 2 (step S100). It is assumed that the server load control unit 20 monitors the load on the service providing server 3 in real time.

  The server load control unit 20 that has received the service provision request from the numbered ticket issuance processing unit 10 determines whether or not the service provision server 3 can provide the service immediately based on the load of the service provision server 3 being monitored. (Step S110).

  When the server load control unit 20 determines that the service providing server 3 cannot provide the service immediately (step S110: No), the server load control unit 20 calculates the service providing start time (step S120). The server load control unit 20 notifies the numbered ticket issue processing unit 10 of the calculated service provision start time.

  On the other hand, if the server load control unit 20 determines that the service providing server 3 can provide the service immediately (step S110: Yes), the server load control unit 20 acquires the current time from the clock in the numbered ticket issuing server 1, and starts providing the service. The numbered ticket issuance processing unit 10 is notified (Step S130).

  Subsequent to step S120 or step S130, the numbered ticket issuance processing unit 10 that has acquired the service provision start time from the server load control unit 20 generates a numbered ticket including the service provision start time or the service waiting time and issues it to the client 2. To do. And this flowchart is complete | finished. The numbered ticket issue processing unit 10 calculates the service waiting time from the difference between the service provision start time acquired from the server load control unit 20 and the current time when generating a numbered ticket including the service waiting time. When the service provision start time acquired from the load control unit 20 is earlier (past) than the current time, the service standby time may be “nothing (for example, 0 seconds)”.

  The flowchart shown in FIG. 2B is another operation of the numbered ticket issuing server 1. Note that steps S200, S210, S220, and S240 in FIG. 2B are the same as steps S100, S110, S120, and S140 in FIG.

  If the server load control unit 20 determines that the service providing server 3 can provide the service immediately (step S210: Yes), the service providing request received by the numbered ticket issue processing unit 10 in step S200 is sent to the service providing server 3. Forward. And this flowchart is complete | finished.

  As described above, when the numbered ticket issuing server 1 receives a service provision request and the processing capacity of the service providing server 3 is not sufficient, an appropriate margin is ensured while guaranteeing the provision of the service with the numbered ticket already issued. If a service ticket is issued that includes a service provision start time (or service standby time) and the service provision server 3 has sufficient processing capacity when a service provision request is received, the service with the current time set A service is immediately provided to the service providing server 3 by, for example, issuing a numbered ticket including the provision start time (or service waiting time “none”). Therefore, according to the numbered ticket issuing server 1, even if the processing capability of the service providing server 3 varies, the service providing server 3 can be provided with a service stably and efficiently. In particular, when a plurality of service providing servers 3 are operated, each service providing server 3 can be provided with services stably and efficiently.

  In the present embodiment, the numbered ticket issuing server 1 has been described as being a separate body from the service providing server 3, but other modes may be used. For example, the service providing server 3 may have the function of the numbered ticket issuing server 1 (the numbered ticket issuing server 1 may have the service providing function). Further, in the case of operating a plurality of service providing servers 3 using a load balancer (load balancer, not shown), the load balancer may have the function of the numbered ticket issuing server 1 (numbered ticket). The issuing server 1 may have a load balancing function).

  In the present embodiment, the server load control unit 20 calculates the service provision start time, but may calculate a service standby time instead of the service provision start time. When the server load control unit 20 calculates the service waiting time instead of the service providing start time, the numbered ticket issue processing unit 10 calculates the service providing start time by adding the service waiting time to the current time.

  In addition, the program for executing each process of the numbered ticket issuing server 1 according to the embodiment of the present invention is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by a computer system. By executing, the above-described various processes related to xx according to an embodiment of the present invention may be performed. Here, the “computer system” may include an OS and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used. The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.

  Further, the “computer-readable recording medium” means a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time. The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 Numbered ticket issuing server 2 Client 3 Service providing server 10 Numbered ticket issuing processing unit 20 Server load control unit

Claims (3)

Server monitoring means for providing a service in response to a request from a client and monitoring a load of a service providing server;
Immediate provision availability determination means for determining whether or not the service provision server can immediately provide a service based on the load of the service provision server monitored by the server monitoring means when there is the request;
Provision start time calculating means for calculating a service start time by the service providing server when the service providing server determines that the service providing server cannot provide the service immediately by the immediate provision availability determining means;
Immediate interrupt means for causing the service providing server to provide a service immediately when the service providing server determines that the service providing server can provide the service immediately by the immediate providing availability determination means;
A numbered ticket issuing server comprising: a numbered ticket issuing means for issuing a virtual numbered ticket including the provision start time or a waiting time until the provision start time. The immediate interruption means is:
2. The numbered ticket issuing server according to claim 1, wherein the service providing server is immediately provided with a service by notifying the numbered ticket issuing means of the current time as the provision start time. The immediate interruption means is:
The numbered ticket issuing server according to claim 1, wherein the service providing server is immediately provided with a service by transferring the request to the service providing server.

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