JP2018101240A - Cache management program, cache management apparatus, cache management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep master data up-to-date.SOLUTION: A client terminal 2 comprises: a determination unit 243 for determining whether or not master data is stored as cache information in a storage unit 23; and a display control unit 242 for displaying, in accordance with the determination that the master data is stored in the storage unit 23, the master data stored as the cache information in the storage unit 23 on a web page displayed on a display unit 21 when the version of the master data is the same as a version of the master data stored in a web application server 1, and displaying the master data stored in the web application server 1 on the web page when the version of the master data is older than the version of the master data stored in the web application server 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cache management program, a cache management apparatus, and a cache management method.

  Conventionally, in a client terminal, data acquired from a server is stored as cache data for the purpose of improving display speed in a web application. For example, Patent Document 1 discloses storing cache data using WebStorage and IndexedDB defined in HTML5.

JP 2015-210663 A

  By the way, if the web application is a web application related to accounting, where journal information is entered, the master data is displayed on the web page in order to prompt the user to select master data such as department data required for journal entry. There are things to do.

  In the case of storing master data as cache data, although it is always required to be the latest information, in Patent Document 1, the master data stored as cache data on the terminal is always kept up-to-date. There is a problem that it is not considered and the latest information is not maintained.

  Therefore, the present invention has been made in view of these points, and an object thereof is to provide a cache management program, a cache management device, and a cache management method capable of keeping master data up-to-date.

  A cache management program according to a first aspect of the present invention includes a computer, a determination unit that determines whether master data is stored as cache information in the storage unit of the computer, and the master data is the storage unit If the version of the master data is the same as the version of the master data stored in a server to which the computer can be connected, it is stored as the cache information in the storage unit. Displayed on a page displayed on the display unit of the computer, and when the version of the master data is older than the version of the master data stored in the server, the master data is stored in the server. A display control unit for displaying the master data on the page; and To function Te.

  The cache management program acquires the master data stored in the server when the master data of the same version as the master data stored in the server is not stored in the storage unit. Functioning as a storage control unit that stores the acquired master data in the storage unit, and the display control unit stores the master data stored in the storage unit by the storage control unit in the page May be displayed.

  The cache management program includes the acquisition unit that acquires the master data stored in the server and version information indicating a version of the master data, the acquired master data, and the version information. The display control unit is stored in the storage unit when the determination unit determines that the master data is stored in the storage unit. When the version indicated by the version information associated with the master data is older than the version indicated by the version information corresponding to the master data stored in the server, the page is displayed on the server. The master data stored in the memory may be displayed.

  The cache management program includes the acquisition unit that acquires the master data stored in the server and version information indicating a version of the master data, the acquired master data, and the version information. Are associated with each other and stored in the storage unit. When the determination unit determines that the master data is stored in the storage unit, the display control unit includes the computer in the server. Compared to the version indicated by the version information corresponding to the master data stored in the server, the version indicated by the version information associated with the master data stored in the storage unit transmitted from If it is determined that it is old, it is stored in the server on the page. The master data is may be displayed.

The determination unit determines whether or not a plurality of master data is stored in the storage unit as the cache information, and the acquisition unit stores a plurality of master data in the storage unit as the cache information. The version information associated with each of the plurality of master data may be transmitted to the server at a time, and at least one of the plurality of master data may be acquired from the server.
The display control unit may display the master data stored in the server on the page when it is determined that the master data is not stored in the storage unit.

  When it is determined that the master data is stored in the storage unit and the master data is damaged, the display control unit displays the master data stored in the server on the page. It may be displayed.

  The display control unit displays the master data on the page in response to selection of a first input item provided on the page, and the determination unit displays the master data on the page. When displaying on the page, it may be determined whether the master data is stored in the storage unit as the cache information.

  The determination unit determines whether or not the first master data is stored in the storage unit as the cache information when the display control unit displays the first master data on the page. It may be determined whether second master data scheduled to be displayed by the display control unit after the master data is stored in the storage unit as the cache information.

  A cache management device according to a second aspect of the present invention is a cache management device that manages a cache, wherein a determination unit that determines whether or not master data is stored as cache information in the storage unit; and the master When it is determined that data is stored in the storage unit, when the version of the master data is the same as the version of the master data stored in a server to which the cache management apparatus can be connected, the cache management The master data stored as the cache information in the storage unit is displayed on a page displayed on the display unit of the apparatus, and the version of the master data is compared with the version of the master data stored in the server When it is old, the master data stored in the server is displayed on the page. Comprising a display control unit that, the.

  A cache management method according to a third aspect of the present invention includes a step of determining whether master data is stored as cache information in a storage unit, which is executed by a computer, and storing the master data in the storage unit. When it is determined that the version of the master data is the same as the version of the master data stored in a server to which the computer can be connected, the page displayed on the display unit of the computer The master data stored as the cache information is displayed in the storage unit, and when the version of the master data is older than the version of the master data stored in the server, the master data is stored in the page. Displaying the master data being processed.

  According to the present invention, there is an effect that the master data can be kept in the latest state.

It is a figure which shows the outline | summary of the display control system which concerns on 1st Embodiment. It is a figure which shows the structure of the client terminal which concerns on 1st Embodiment. It is a flowchart which shows the flow of a process in the client terminal which concerns on 1st Embodiment. It is a figure which shows an example of the web page which concerns on 1st Embodiment. It is a flowchart which shows the flow of the process in the master data acquisition process which concerns on 1st Embodiment. It is a flowchart which shows the flow of the process in the master data acquisition process which concerns on 2nd Embodiment. It is a flowchart which shows the flow of a process in the web application server when the version confirmation information which concerns on 2nd Embodiment is received.

<First Embodiment>
[Outline of Web Application Server 1]
FIG. 1 is a diagram illustrating an overview of a display control system S according to the first embodiment.
The display control system S includes a web application server 1 and a client terminal 2 as a display control device that can communicate with the web application server 1. The display control system S is a system that causes the client terminal 2 to display a web page provided by the web application server 1.

  The web application server 1 is a server that provides the client terminal 2 with a web application for providing an accounting service for an individual business owner or a small business. The web application server 1 includes a control unit and a storage unit. The client terminal 2 is, for example, a computer used by an individual business owner or a small business, and is a personal computer or the like.

  In the description of FIG. 1, an example in which the web application server 1 provides a service to the client terminal 2 used by one user will be described. However, the web application server 1 is a client terminal used by each of a plurality of users. 2 may provide a service.

  The client terminal 2 transmits a web page acquisition request to the web application server 1 in accordance with a user operation ((1) in FIG. 1). Upon receiving the web page acquisition request, the web application server 1 transmits the web page to the client terminal 2 ((2) in FIG. 1). The web page includes information for displaying the master data.

  The client terminal 2 displays the received web page ((3) in FIG. 1). The client terminal 2 checks whether the master data to be displayed on the web page is stored in its own storage unit as cache information ((4) in FIG. 1). Further, when the master data is stored in its own storage unit, the client terminal 2 checks whether the version of the master data is the latest version ((5) in FIG. 1). The client terminal 2 acquires the master data in the web application server 1 when the master data is not stored in its own storage unit or when the version of the master data stored in the storage unit is not the latest version. The request is transmitted ((6) in FIG. 1).

  When receiving the master data acquisition request from the client terminal 2, the web application server 1 transmits the latest master data stored in the web application server 1 to the client terminal 2 ((7) in FIG. 1). The client terminal 2 acquires the latest version of the master data and displays it on the web page ((8) in FIG. 1). By doing in this way, the client terminal 2 can keep the master data displayed on a web page in the latest state.

[Configuration of client terminal 2]
Next, the configuration of the client terminal 2 will be described. FIG. 2 is a diagram illustrating a configuration of the client terminal 2 according to the first embodiment.

The client terminal 2 includes a display unit 21, an input unit 22, a storage unit 23, and a control unit 24.
The display unit 21 includes, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display.
The input unit 22 is, for example, a keyboard or a mouse, and receives an operation input from the user of the client terminal 2.

  The storage unit 23 is a storage medium such as a ROM (Read Only Memory), a RAM (Random Access Memory), and a hard disk, for example. The storage unit 23 stores a program executed by the control unit 24. Moreover, the memory | storage part 23 memorize | stores the master data displayed on the web page acquired from the web application server 1 as cache information. The cache information is stored by, for example, HTML5 IndexedDB. The master data is stored in the storage unit 23 in association with version information indicating the version of the master data.

  The control unit 24 is, for example, a CPU (Central Processing Unit). The control unit 24 controls functions related to the client terminal 2 by executing various programs stored in the storage unit 23 and programs acquired from external devices via a communication network. The control unit 24 functions as a page acquisition unit 241, a display control unit 242, a determination unit 243, a master data acquisition unit 244, and a storage control unit 245.

[Processing flow at client terminal]
Hereinafter, details of functions provided in the control unit 24 will be described with reference to a flowchart showing a flow of processing in the client terminal 2. FIG. 3 is a flowchart showing the flow of processing in the client terminal 2 according to the first embodiment.

  First, the page acquisition unit 241 acquires a web page corresponding to the web application from the web application server 1 in response to receiving a web page acquisition operation corresponding to the web application via the input unit 22 ( S10).

  For example, the page acquisition unit 241 is realized by a browser program (hereinafter referred to as a browser) stored in the storage unit 23. For example, the page acquisition unit 241 receives an operation for designating the address of the web application server 1 via a browser screen displayed on the display unit 21. When receiving an operation for designating an address of the web application server 1, the page acquisition unit 241 transmits a web page acquisition request to the web application server 1.

  When receiving the web page acquisition request from the client terminal 2, the web application server 1 acquires the web page stored in the storage unit of the web application server 1. Here, the web page includes a cache management program that causes the control unit 24 of the client terminal 2 to function as the display control unit 242, the determination unit 243, the master data acquisition unit 244, and the storage control unit 245.

  FIG. 4 is a diagram illustrating an example of the web page 211 according to the first embodiment. A web page 211 shown in FIG. 4 is a page for inputting information related to a sales slip issued by a company. As shown in FIG. 4, the web page 211 includes a plurality of input items that accept input of information. At least one of the plurality of input items is a master data input item (first input item) for selecting and inputting any of the plurality of master data.

  Here, the master data is data given to the accounting information in a company that uses the accounting service, and is data with low update frequency. For example, the master data is a customer code, a department code, or a transaction classification code. By storing these master data in the storage unit 23, the display control unit 242 increases the time from when the master data is displayed on the web page to when the master data is actually displayed on the web page. It can be shortened compared with the case where it acquires from the web application server 1 and displays it.

  The master data may be different for each company fiscal year. In this case, for example, the department code as master data may be stored as cache information in the storage unit 23 for each fiscal year of the company.

  In the example shown in FIG. 4, the customer, department, transaction category, product code, and unit are the master data input items. When the master data input item is selected, the master data is displayed in the master data display area 211A. When inputting the master data in the master data input item, the user can easily select the master data to be input while confirming the master data displayed in the master data display area 211A.

Returning to FIG. The web application server 1 transmits the acquired web page to the client terminal 2.
The page acquisition unit 241 acquires a web page by receiving the web page from the web application server 1.

  The browser executes a cache management program included in the web page acquired by the page acquisition unit 241 (S20). Thereby, the control unit 24 operates as a display control unit 242, a determination unit 243, a master data acquisition unit 244, and a storage control unit 245.

  The display control unit 242 displays the web page acquired by the page acquisition unit 241 on the browser screen (S30). The display control unit 242 receives an operation in the web page through the input unit 22 (S40). For example, the display control unit 242 receives input of information for each of a plurality of items included in the web page 211 illustrated in FIG.

  Subsequently, the determination unit 243 determines whether or not a master data input item is selected by a user operation via the input unit 22 (S50). If the determination unit 243 determines that the master data input item is selected, the process proceeds to S60. If the determination unit 243 determines that the master data input item is not selected, the process proceeds to S40.

  The determination unit 243, the master data acquisition unit 244, and the storage control unit 245 execute a master data acquisition process for acquiring the latest master data (S60). Here, the master data to be acquired is a plurality of master data that are candidates to be input to the master data input item. In the web page 211 shown in FIG. 4, when a transaction classification is selected as a master data input item, the master data to be acquired is a transaction classification master that is a candidate to be input to the transaction classification.

  FIG. 5 is a flowchart showing a process flow in the master data acquisition process according to the first embodiment. As described above, the master data acquisition process is executed when a master data input item provided in a web page is selected and the display control unit 242 displays master data corresponding to the item on the web page. .

  First, the determination unit 243 determines whether or not the browser supports cache management (S610). For example, the cache management program includes correspondence information that associates browser identification information corresponding to the Indexed DB used for cache management and the browser version. The determination unit 243 specifies the identification information and version of the browser displaying the web page. The determination unit 243 determines whether or not the browser supports cache management based on the correspondence information included in the cache management program and the identified browser identification information and version. If the determination unit 243 determines that the browser supports cache management, the process proceeds to S620. If the determination unit 243 determines that the browser does not support cache management, the process proceeds to S680.

  Subsequently, the determination unit 243 determines whether or not the acquisition target master data is stored in the storage unit 23 as cache information (S620). If the determination unit 243 determines that the master data is stored in the storage unit 23, the determination unit 243 moves the process to S630. If the determination unit 243 determines that the master data is not stored in the storage unit 23, the determination unit 243 moves the process to S680.

  Subsequently, the master data acquisition unit 244 determines whether or not the master data to be acquired is damaged (S630). For example, the master data to be acquired includes error detection information, and the master data acquisition unit 244 generates error detection information based on the master data to be acquired. The master data acquisition unit 244 determines that the master data is not damaged when the generated error detection information matches the error detection information included in the master data in advance. The master data acquisition unit 244 determines that the master data is damaged when the generated error detection information does not match the error detection information included in the master data in advance.

If the master data acquisition unit 244 determines that the acquisition target master data is damaged, the process proceeds to S680. If the master data acquisition unit 244 determines that the acquisition target master data is not damaged, the process proceeds to S640. In this way, the client terminal 2 can acquire the master data from the web application server 1 when the master data is damaged.
Subsequently, the master data acquisition unit 244 acquires version information of the master data associated with the acquisition target master data and stored in the storage unit 23 (S640).

  Subsequently, the master data acquisition unit 244 acquires the latest version information corresponding to the acquisition target master data stored in the web application server 1 from the web application server 1 (S650). For example, the master data acquisition unit 244 transmits to the web application server 1 a version acquisition request that includes the identification information of the master data to be acquired and requests acquisition of the latest version information. When receiving the version acquisition request, the web application server 1 acquires the identification information of the master data included in the request, and acquires the latest version information of the master data. The web application server 1 transmits the latest version information to the client terminal 2. The master data acquisition unit 244 receives the latest version information transmitted by the web application server 1.

  Subsequently, the master data acquisition unit 244 determines whether or not the master data stored in the storage unit 23 is the latest master data based on the version information acquired in S640 and S650 (S660). Specifically, the master data acquisition unit 244 determines whether or not the version indicated by the version information acquired from the storage unit 23 is older than the version indicated by the version information acquired from the web application server 1. If the master data acquisition unit 244 determines that the master data stored in the storage unit 23 is the latest master data, the master data acquisition unit 244 proceeds to S670, and the master data stored in the storage unit 23 is not the latest master data. If it is determined that there is no, the process proceeds to S680.

  In S <b> 670, the master data acquisition unit 244 acquires the master data to be acquired from the storage unit 23. That is, the master data acquisition unit 244, when master data of the same version as the master data stored in the web application server 1 is stored in the storage unit 23, the master data stored as cache information in the storage unit 23 Get the data.

  In S680, the master data acquisition unit 244 acquires the master data to be acquired from the web application server 1. The master data acquisition unit 244 acquires master data stored in the web application server 1 when master data of the same version as the master data stored in the web application server 1 is not stored in the storage unit 23. .

  Here, when the master data of the same version as the master data stored in the web application server 1 is not stored in the storage unit 23, the master data to be acquired is when the browser does not support cache management. If the data is not stored in the storage unit 23, the master data stored in the storage unit 23 is damaged, or the version of the master data stored in the storage unit 23 is stored in the web application server 1. It is either older than the latest version of the relevant master data.

  For example, the master data acquisition unit 244 transmits the master acquisition request that includes the identification information of the master data to be acquired and requests acquisition of the master data to the web application server 1. When receiving the master acquisition request, the web application server 1 acquires identification information of the master data included in the request, acquires the master data, and acquires version information of the master data. The web application server 1 transmits the acquired master data and version information to the client terminal 2. The master data acquisition unit 244 receives master data and version information transmitted from the web application server 1.

  Subsequently, the storage control unit 245 associates the acquired master data with the version information and stores them in the storage unit 23 (S690).

  Returning to FIG. The display control unit 242 displays the acquired master data in the master data display area of the web page in response to selection of a master data input item provided on the web page (S70).

  Here, when the determination unit 243 determines that the acquisition target master data is stored in the storage unit 23, the display control unit 242 determines that the version of the master data stored in the storage unit 23 is the web When the version of the master data stored in the application server 1 is the same, the master data stored as cache information in the storage unit 23 is displayed on the web page.

  Further, the display control unit 242 is stored in the web application server 1 when the version of the master data stored in the storage unit 23 is older than the version of the master data stored in the web application server 1. Display master data on a web page. Moreover, the display control part 242 displays the master data memorize | stored in the web application server 1 on a web page, when the master data memorize | stored in the memory | storage part 23 are damaged.

  By doing in this way, the user can select the master data which should be input, confirming the master data currently displayed on the web page, when inputting master data into a master data input item.

  Subsequently, the display control unit 242 determines whether a display end operation for ending the display of the web page has been received from the user (S80). If the display control unit 242 determines that the display end operation has been received, the display control unit 242 ends the process according to this flowchart. If the display control unit 242 determines that the display end operation has not been received, the process proceeds to S40.

[Modification]
In the first embodiment, the determination unit 243 stores the master data as cache information when the display control unit 242 displays the master data on the web page, that is, when a master data input item is selected. Although it is determined whether or not it is stored in the memory 23, the present invention is not limited to this. For example, when the display control unit 242 displays the first master data on the web page, the determination unit 243 determines whether or not the first master data is stored in the storage unit 23 as cache information, and the first It may be determined whether the second master data scheduled to be displayed by the display control unit 242 after one master data is stored in the storage unit 23 as cache information.

  For example, in the web page 211 shown in FIG. 4, after the sales date of the sales slip is input, the customer is input, and then the department related to the sales is input. Therefore, the determination unit 243 determines whether the master data (customer master) corresponding to the customer is the latest version in response to selection of the input item corresponding to the customer. In addition, it may be determined whether the master data (department master) corresponding to the department is the latest version.

  In addition, the determination unit 243 determines whether or not the latest customer master is stored in the storage unit 23 as cache information in response to selection of an input item corresponding to the customer, and the latest department It may be determined whether or not the master is stored in the storage unit 23 as cache information. The determination unit 243 acquires the latest department master from the web application server 1 when the latest department master is not stored in the storage unit 23 at the timing when the input item corresponding to the customer is selected. Alternatively, it may be stored in the storage unit 23 as cache information. In this way, the latest department master can be acquired from the storage unit 23 and displayed at high speed when the input item corresponding to the department is selected.

  Further, the determination unit 243 specifies a master input item that is surely input in the web page in response to the web page being displayed, and whether or not master data corresponding to the item is stored in the storage unit 23. It may be determined.

[Effect in the first embodiment]
As described above, when the client terminal 2 according to the first embodiment determines that the master data is stored in the storage unit 23, the version of the master data is stored in the web application server 1. When the data version is the same, the master data stored as cache information in the storage unit 23 is displayed on the web page displayed on the display unit 21, and the master data version is stored in the web application server 1. When it is older than the data version, the master data stored in the web application server 1 is displayed on the web page.
By doing in this way, the client terminal 2 can keep the master data displayed on a web page in the latest state.

Second Embodiment
[Determining whether the master data cached in the web application server 1 is the latest]
Next, the second embodiment will be described. In the first embodiment, the client terminal 2 acquires the latest version information of the master data to be acquired from the web application server 1 and determines that the master data stored in the storage unit 23 is old based on the version information. Then, master data was acquired from the web application server 1. However, when acquiring master data by this procedure, the client terminal 2 accesses the web application server 1 twice, and the time until acquiring the master data becomes long.

  Therefore, in the second embodiment, the web application server 1 determines whether the cached master data is the latest. The display control unit 242 of the client terminal 2 stores the storage unit 23 transmitted from the client terminal 2 in the web application server 1 when the determination unit 243 determines that the master data is stored in the storage unit 23. When the version indicated by the version information associated with the master data stored in is determined to be older than the version indicated by the version information corresponding to the latest master data stored in the web application server 1 The master data stored in the web application server 1 is displayed on the web page. The second embodiment will be described below with reference to the drawings. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

FIG. 6 is a flowchart showing a process flow in the master data acquisition process according to the second embodiment.
Since the processing from S610 to S640 is the same as the processing from S610 to S640 in the master data acquisition processing according to the first embodiment, the description thereof is omitted.

  The master data acquisition unit 244 transmits the version confirmation information to the web application server 1 (S651). The version confirmation information is information for requesting the web application server 1 to confirm whether the master data to be acquired stored in the storage unit 23 is the latest. The version confirmation information includes the identification information of the master data to be acquired and the version information of the master data acquired in S640.

  When receiving the version confirmation information, the control unit of the web application server 1 confirms whether the master data to be acquired stored in the storage unit 23 is the latest. Then, when the acquisition target master data stored in the storage unit 23 is not the latest, the control unit of the web application server 1 transmits the latest master data and the version information of the master data to the client terminal 2. To do.

FIG. 7 is a flowchart showing a flow of processing in the web application server 1 when the version confirmation information according to the second embodiment is received.
First, the control unit of the web application server 1 acquires master data identification information and version information of the master data included in the version confirmation information (S110).
Subsequently, the control unit of the web application server 1 acquires version information indicating the latest master data version corresponding to the master data identification information acquired in S110 (S120).

  Subsequently, the control unit of the web application server 1 determines whether or not the version indicated by the version information acquired in S110 is different from the version indicated by the version information acquired in S120 (S130). If the control unit of the web application server 1 determines that the versions are different, it moves the process to S140, and if it determines that the versions are the same, it moves the process to S150.

  In S <b> 140, the control unit of the web application server 1 transmits response information including the latest master data and version information of the master data to the client terminal 2. Thereby, the web application server 1 transmits the latest master data and the version information of the master data to the client terminal 2 when the acquisition target master data stored in the storage unit 23 is old.

  In S150, the control unit of the web application server 1 transmits response information including information indicating that the master data stored as cache data in the storage unit 23 is not updated to the client terminal 2.

Returning to FIG. The master data acquisition unit 244 of the client terminal 2 receives the response information from the web application server 1 (S652).
Subsequently, the master data acquisition unit 244 determines whether or not master data is received from the web application server 1 (S661). Specifically, the master data acquisition unit 244 determines whether or not the master data is received from the web application server 1 by determining whether or not the master information is included in the response information received in S652. . If the master data acquisition unit 244 determines that the master data has been received from the web application server 1, the process proceeds to S690. If the master data acquisition unit 244 determines that the master data has not been received from the web application server 1, the process proceeds to S670.

  The processes from S670 to S690 are the same as the processes from S670 to S690 in the master data acquisition process according to the first embodiment, and thus description thereof is omitted.

[Modification]
In addition, when the display control unit 242 displays the master data on the web page, the master data acquisition unit 244 transmits the version confirmation information including the version information of the master data to the web application server 1, but is not limited thereto. . For example, when a plurality of master data is stored in the storage unit 23 as cache information, the master data acquisition unit 244 displays version confirmation information including version information associated with each of the plurality of master data. 1, and at least one of a plurality of master data may be acquired from the web application server 1.

  For example, when the web page 211 shown in FIG. 4 is displayed on the display unit 21, the determination unit 243 determines that the latest customer master is the cache information in response to selection of an input item corresponding to the customer. Is stored in the storage unit 23, and it is determined whether the latest department master is stored in the storage unit 23 as cache information. When it is determined that neither the customer master stored in the storage unit 23 nor the department master is the latest, the master data acquisition unit 244 corresponds to the version information corresponding to the customer master and the department master. Version confirmation information including version information to be transmitted may be transmitted to the web application server 1. By doing in this way, the client terminal 2 can acquire a plurality of master data from the web application server 1 in a short time.

[Effects of Second Embodiment]
As described above, when the master data is stored in the storage unit 23, the client terminal 2 according to the second embodiment stores the data in the storage unit 23 transmitted from the client terminal 2 in the web application server 1. If it is determined that the version indicated by the version information associated with the master data stored is older than the version indicated by the version information corresponding to the latest master data stored in the web application server 1, The master data stored in the web application server 1 is displayed on the page.
By doing in this way, the client terminal 2 can keep the master data displayed on the web page in the latest state as in the first embodiment.

  When the web application server 1 determines that the master data to be acquired is old based on the master data identification information and the version information included in the version confirmation information received from the client terminal 2, the web application server 1 sets the latest master data to the client Transmit to terminal 2. By doing in this way, the client terminal 2 only transmits the version confirmation information to the web application server 1, and when the version of the master data stored in the storage unit 23 is old, the latest information is sent from the web application server 1. Version master data can be acquired. Therefore, the client terminal 2 can acquire master data from the web application server 1 in a short time.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Web application server, 2 ... Client terminal, 21 ... Display part, 22 ... Input part, 23 ... Memory | storage part, 24 ... Control part, 241 ... Page acquisition part 242 ... Display control unit, 243 ... Determination unit, 244 ... Master data acquisition unit, 245 ... Storage control unit, S ... Display control system

Claims (11)

Computer
A determination unit that determines whether or not master data is stored as cache information in the storage unit of the computer; and a version of the master data when it is determined that the master data is stored in the storage unit When the version of the master data stored in the server to which the computer can be connected is the same, the master data stored as the cache information in the storage unit is displayed on the page displayed on the display unit of the computer. A display control unit that displays the master data stored in the server on the page when the version of the master data is older than the version of the master data stored in the server;
Cache management program that functions as The computer,
When the master data of the same version as the master data stored in the server is not stored in the storage unit, the acquisition unit that acquires the master data stored in the server, and
Function as a storage control unit for storing the acquired master data in the storage unit,
The display control unit displays the master data stored in the storage unit by the storage control unit on the page;
The cache management program according to claim 1. The computer,
An acquisition unit for acquiring the master data stored in the server and version information indicating a version of the master data;
The acquired master data and the version information are associated with each other and function as a storage control unit for storing in the storage unit,
The display control unit, when the determination unit determines that the master data is stored in the storage unit, a version indicated by the version information associated with the master data stored in the storage unit However, if the version is older than the version indicated by the version information corresponding to the master data stored in the server, the master data stored in the server is displayed on the page.
The cache management program according to claim 1 or 2. The computer,
An acquisition unit for acquiring the master data stored in the server and version information indicating a version of the master data;
The acquired master data and the version information are associated with each other and function as a storage control unit for storing in the storage unit,
The display control unit, when the determination unit determines that the master data is stored in the storage unit, the master data transmitted from the computer and stored in the storage unit in the server If it is determined that the version indicated by the version information associated with is older than the version indicated by the version information corresponding to the master data stored in the server, the version is stored in the page. The master data being displayed is displayed,
The cache management program according to claim 1 or 2. The determination unit determines whether or not a plurality of the master data is stored in the storage unit as the cache information,
The acquisition unit, when a plurality of the master data is stored in the storage unit as the cache information, transmits the version information associated with each of the plurality of master data to the server at a time, Obtaining at least one of the plurality of master data from the server;
The cache management program according to claim 4. The display control unit displays the master data stored in the server on the page when it is determined that the master data is not stored in the storage unit.
The cache management program according to any one of claims 1 to 5. When it is determined that the master data is stored in the storage unit and the master data is damaged, the display control unit displays the master data stored in the server on the page. Display,
The cache management program according to any one of claims 1 to 6. The display control unit displays the master data on the page in response to selection of a first input item provided on the page,
The determination unit determines whether the master data is stored in the storage unit as the cache information when the display control unit displays the master data on the page.
The cache management program according to any one of claims 1 to 7. The determination unit determines whether or not the first master data is stored in the storage unit as the cache information when the display control unit displays the first master data on the page. Determining whether or not second master data scheduled to be displayed by the display control unit after the master data is stored in the storage unit as the cache information;
The cache management program according to claim 8. A cache management device for managing a cache,
A determination unit for determining whether master data is stored as cache information in the storage unit;
When it is determined that the master data is stored in the storage unit, when the version of the master data is the same as the version of the master data stored in a server to which the cache management device can be connected, The master data stored as the cache information in the storage unit is displayed on the page displayed on the display unit of the cache management device, and the version of the master data is changed to the version of the master data stored in the server. A display control unit for displaying the master data stored in the server on the page,
A cache management device. The computer runs,
Determining whether or not master data is stored as cache information in the storage unit;
When it is determined that the master data is stored in the storage unit, the version of the master data is the same as the version of the master data stored in a server to which the computer can be connected. When the master data stored as the cache information in the storage unit is displayed on the page displayed on the display unit, and the version of the master data is older than the version of the master data stored in the server Displaying the master data stored in the server on the page;
A cache management method comprising:

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