KR20040070109A - Method,Progra,Media,Device of processing information for caching - Google Patents

Abstract

PURPOSE: A method, a program, a medium, and a device for processing information to cache the information are provided to save resources and reduce traffics on a network, an information processor, a network interface, a bus, a CPU, and a RAM. CONSTITUTION: The confirmation for the information update is requested(S1). The step(S1) is given to the step for receiving a confirmation request for the information update(S2). The step(S2) is given to the step for judging the confirmation of the information update(S3). The step(S3) is given to the step for proving the information including a fact of the information update(S4). The step(S4) is included in the step for receiving the information including a fact of the information update(S5).

Description

In caching, information processing method, program, media, device {Method, Progra, Media, Device of processing information for caching}

The present invention relates to an information processing method, a program, a medium, and an apparatus, and more particularly, to an information processing method, a program, a medium, and an apparatus in caching.

Conventionally, in the caching-related information processing method of the client server, in the case of a web server and a web browser, for example, in the Internet Explorer 6.0 Service Pack 1 client, enter Internet Options, and in the General tab, press the Settings button in the Temporary Internet Files area. , Set to "Every time I open a page automatically" in Check for new versions of saved pages (hereafter referred to as "Check for new version pages"), If the web server is imported through the server and set to "automatic" in the "check for new version page", the web server is stored in the computer where the client program is installed and the temporary internet file has already been stored from the web server. Do not fetch the requested page from.

For this reason, when a page changed to a new page does not load, call the provider of the page service and talk about the situation. In the "Check for new version page" section, the "Whenever page is opened automatically" It is recommended to set and use.

In general, users often use such a state, and even though there is no update of the page in the web server, each time the page is continuously opened, the transfer requests and loads.

In addition, in the case of "automatic" in the "confirm new version page" corner, there is a problem that the updated page is not loaded even if the page is updated.

In addition, in other caching fields, there is an example of caching without checking whether information is updated or not, and thus, a caching method, a program, and a device for checking whether the information is updated are required.

As a result of the above problems, network traffic is generated unnecessarily, affects network traffic congestion, and traffic of the network interface part is also generated unnecessarily in the information processing apparatus, and in the bus, CPU and RAM in the information processing apparatus for the above reason. Resources and traffic are unnecessarily occupied and are occurring.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information processing method, program, and apparatus for checking whether information is updated in caching.

1 is a view showing a problem of a conventional caching server.

Fig. 2A is a diagram of caching requests and caching in a single information processing apparatus.

Fig. 2B is a connection diagram of a caching device in a client server structure or an information processing device connected in communication.

Fig. 2C is a connection diagram of a caching device in a client server structure or an information processing device connected in communication in a structure having a proxy server or a caching server in the middle.

3A is a diagram of caching information processing.

3B is a diagram of caching information means.

4A is a block diagram of a single information processing device.

4B is a configuration diagram of an information update confirmation request information processing apparatus.

4C is a configuration diagram of an information update check determination apparatus.

IUE: means "information including information on whether information has been updated".

ICUDT: "Information which can distinguish information generation information or information which can distinguish information update information" means.

Hereinafter, the present invention relates to (1) to (100).

(1) An information processing method for checking whether information has been updated in caching

(2) in caching, requesting confirmation of whether or not the information has been updated (S1),

Receiving a request for checking whether the information is updated (S2),

Determining whether the information is updated (S3),

Providing information IUE including information on whether the information has been updated (S4),

Information processing method comprising the step of receiving the IUE (S5)

(3) The information processing method characterized in that (2) includes an information processing step (S6).

(4) In the caching, step S6 of (3) includes storing or caching information (S61).

(5) In the caching, the step S6 of (3) includes the step of displaying information (S62).

(6) in caching, requesting confirmation of whether or not the information has been updated (S1),

And receiving information (IUE) including information on whether the information has been updated (S5).

(7) in caching, receiving a request for checking whether information is updated (S2),

Determining whether the information is updated (S3),

And providing the IUE (S4).

(8) In the caching, the IUE of step S5 or S6 includes any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information update information (ICUDT).

(9) In the caching, the step of storing or caching the information (S61) includes an ICUDT.

(10) In the caching, the step of storing or caching the information (S61) includes the ICUDT of the step S5 or S6, characterized in that the information processing method

(11) The caching wherein the ICUDT includes information representing the generation or change of information.

(12) In caching, the step of storing or caching the information (S61) includes one or more processes of modulating, encrypting, and changing the information of any one of the ICUDTs in the step S5 or the step S6 before or after in time. Information processing method comprising the

(13) The caching wherein the ICUDT includes information representing an order of generation or change of information.

(14) The caching wherein the ICUDT includes information representing a generation or modified version of the information.

(15) The caching wherein the ICUDT includes information for classifying temporary information.

(16) In caching, the ICUDT includes year, month, day, hour, minute, second, yearly weekly number, monthly weekly, quarterly, semi-annual, and information that distinguishes the day of the week, and date and time information. An information processing method comprising information having any one or more combinations of information including information represented by columns;

(17) In the caching, the information processing method characterized in that the IUE of step S5 or S6 is information including updated information.

(18) In the caching, when the IUE of step S5 or S6 is updated, the information processing method characterized in that the information including the updated information.

(19) Any one of (1) to (18) is an information processing method in a client server structure.

(20) Any of the above (1) to (18) is an information processing method in an internet service

(21) Any one of (1) to (18) above is an information processing method in any one or more services of a service field including HTML, XML, ebXML, SGML, VRML, and the like.

(22) Any one of (1) to (18) above is an information processing method in any one or more of services including a web or a web service.

(23) Any of the above (1) to (18) is an information processing method on the web

(24) Any one of (1) to (18) above is an information processing method in a web server and a web client.

(25) Any one of (1) to (18) is a method for processing information in a web server and a web proxy server, or a web proxy server and a web client.

(26) The information processing method in any of (1) to (18) above, which is a server having a caching function with a service server or a server having a caching function and a service request server.

(27) Any of the above (1) to (18) is an information processing method in a video providing service

(28) Any of the above (1) to (18) is an information processing method in a music providing service

(29) Any one of (1) to (18) above is a method for processing information in a data download or a data providing service

(30) Any one of (1) to (18) above is an information processing method in any one of online lectures, real-time lectures, lecture materials, and streaming lecture services.

(31) Any one of (1) to (18) above is an information processing method in any one of services including broadcast, VOD, and AOD.

(32) Any one of (1) to (18) is an information processing method in a digital broadcasting service.

(33) Any one of (1) to (18) is an information processing method in a digital broadcasting service of any one of DMB and broadcasting including Internet broadcasting.

(34) In caching, a program for causing the information processing apparatus to execute whether or not the information has been updated by means including confirmation processing means.

(35) In the caching, in the information processing apparatus,

Means (M1) for requesting confirmation of whether the information has been updated,

Means (M2) for receiving a request for checking whether information has been updated;

Means (M3) for determining whether the information has been updated,

Means (M4) for providing information (IUE) including information on whether the information has been updated,

A program for executing the IUE by means including means for receiving M5

(36) The program (35) includes an information processing means (M6) for execution.

(37) In the caching, a program for causing the information processing apparatus to include the means (M61) for storing or caching information in the M6 means of (36).

(38) In the caching, a program for causing the information processing apparatus to execute, wherein the M6 means of (36) includes means (M62) for displaying information.

(39) In the caching, in the information processing apparatus,

Means (M1) for requesting confirmation of whether the information has been updated,

A program for executing, including means (M5) for receiving information (IUE) including information on whether information has been updated

(40) In the caching, in the information processing apparatus,

Means (M2) for receiving a request for checking whether information has been updated;

Means (M3) for determining whether the information has been updated,

A program for execution including means (M4) for providing an IUE

(41) In the caching, the M5 means or M6 means for processing the IUE including any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information update information, from the information processing apparatus. Program to execute including

(42) In the caching, a program for causing the information processing apparatus to include and execute means (M61) for storing or caching information including the ICUDT.

(43) In caching, a program (M61) for storing or caching the information in the information processing apparatus includes the M5 means or M6 means for processing ICUDT, and executes the program.

(44) A program for caching, wherein the information processing apparatus includes means for processing that the ICUDT is information representing the generation or change of information.

(45) In the caching, means (M61) for storing or caching the information in the information processing apparatus performs one or more processes of modifying, encrypting, and changing the information of any one of the ICUDTs before or after in time. Program for execution, including M5 means or M6 means, including

(46) In caching, a program for causing an information processing apparatus to include the means for processing that the ICUDT is information representing an order of generation or change of information.

(47) A program for caching, wherein the information processing apparatus includes means for processing that the ICUDT is information representing a generation or modified version of the information.

(48) In caching, a program for causing the information processing apparatus to include the means for processing that the ICUDT is information for classifying temporary information.

(49) In caching, in the information processing apparatus, the ICUDT is year, month, day, hour, minute, second, yearly weekly, monthly weekly, quarter, half-year, information for distinguishing the day of the week, date and time. A program for executing, including means for processing what is information having any one or more combinations of information, including information in which the information is represented by one numeric string.

(50) In the caching, a program for causing the information processing apparatus to include means for processing that the IUE in step S5 or S6 is information including updated information.

(51) In the caching, a program for causing the information processing apparatus to include a means for processing that the IUE in the step S5 or the step S6 is information including the updated information when updated.

(52) Any one of (34) to (51) above is an information processing program in a client server structure.

(53) Any one of (34) to (51) above is an information processing program in an Internet service

(54) Any one of (34) to (51) above is an information processing program in any one or more services of a service field including HTML, XML, ebXML, SGML, VRML, and the like.

(55) Any one of (34) to (51) above is an information processing program in any one or more of services including a web or a web service.

(56) Any one of (34) to (51) above is an information processing program on the web.

(57) Any one of (34) to (51) above is an information processing program in a web server and a web client.

(58) Any one of (34) to (51) above is an information processing program in a web server and a web proxy server, or a web proxy server and a web client.

(59) Any one of (34) to (51) above is an information processing program in a server that performs a caching function with a service server or a server that performs a caching function and a service request server.

(60) Any one of (34) to (51) above is an information processing program in a video providing service

(61) Any one of (34) to (51) above is an information processing program in a music providing service

(62) Any one of (34) to (51) above is an information processing program in a data download or data providing service.

(63) Any one of (34) to (51) above is an information processing program in any one of online lectures, real-time lectures, lecture materials, and streaming lecture services.

(64) Any one of (34) to (51) above is an information processing program in any one of services including broadcast, VOD, and AOD.

(65) Any one of (34) to (51) above is an information processing program in a digital broadcasting service.

(66) Any one of (34) to (51) above is an information processing program in a digital broadcasting service of any one of DMB and broadcasting including Internet broadcasting.

(67) The information processing apparatus readable recording medium which recorded the program of said (34)-(66)

(68) An information processing apparatus equipped with a caching, including an information update check processing unit.

(69) in caching,

Request for confirmation of updated information (P1),

Receiving request for information update unit (P2),

Determining whether the information is updated (P3),

The unit (P4) for providing information (IUE) including information whether the information has been updated,

Information processing device including an IUE receiving unit (P5)

(69) The information processing apparatus (69) includes an information processing unit (P6).

(71) In the caching, an information processing apparatus including a portion P61 for storing or caching information in the P6 portion of the 70.

(72) In the caching, the information processing apparatus provided with the P6 part of the said 70 contains the part P62 which displays information.

(73) in caching,

P1 requesting to check whether the information is updated,

An information processing apparatus including a unit (P5) receiving information (IUE) including information whether the information has been updated or not

(74) in caching,

Receiving request for information update unit (P2),

Determining whether the information is updated (P3),

An information processing apparatus including a unit P4 for providing an IUE

(75) An information processing apparatus comprising the P5 or P6 unit for processing an IUE including any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information generation information in caching.

(76) In the caching, an information processing apparatus including a unit (P61) for storing or caching information including the ICUDT.

(77) In the caching, an information processing apparatus including the P5 or P6 section for processing ICUDT, which stores or caches the information.

(78) In the caching, the ICUDT includes an information processing apparatus including a processing unit that processes the information representing the generation or change of information.

(79) In caching, the unit P61 for storing or caching the information includes a P5 unit including one or more processes of modulating, encrypting, and changing the information before or after in the ICUDT. Or an information processing device including a P6 part

(80) An information processing apparatus provided with caching, wherein the ICUDT includes a processing unit that processes information representing an order of generation or change of information.

(81) In the caching, the ICUDT includes an information processing apparatus including a processing unit that processes the information representing the generation or modified version of the information.

(82) An information processing apparatus provided with caching, wherein the ICUDT includes a portion for processing that is information for classifying temporary information.

(83) In caching, the ICUDT includes year, month, day, hour, minute, second, yearly weekly number, monthly weekly, quarterly, semi-annual, information for distinguishing the day of the week, and date and time information. And an information processing apparatus including a processing unit for processing information having any one or more combinations of information including information expressed in columns.

(84) In the caching, an information processing apparatus including a processing unit for processing that the IUE of step S5 or S6 is information including updated information.

(85) In the caching, an information processing apparatus including a processing unit for processing that the IUE of step S5 or step S6 is information including updated information when updated.

(86) Any one of the above (68) to (85) is an information processing apparatus in a client server structure

(87) Any one of the above (68) to (85) is an information processing apparatus in an Internet service

(88) Any one of the above (68) to (85) is an information processing apparatus in any one or more services of the service field including HTML, XML, ebXML, SGML, VRML, etc.

(89) Any one of (68) to (85) above is an information processing apparatus in any one or more of services including a web or a web service.

(90) Any of the above (68) to (85) is an information processing apparatus in the web

(91) Any one of (68) to (85) is an information processing apparatus in a web server and a web client.

(92) Any one of (68) to (85) is an information processing apparatus connected to any one or the same in a web server and a web proxy server, or a web proxy server and a web client.

(93) Any one of (68) to (85) above is any one or an information processing apparatus connected to the service server in the server having a caching function or the server having a caching function and the service request server

(94) Any of the above (68) to (85) is an information processing apparatus in a video providing service

(95) Any one of the above (68) to (85) is an information processing apparatus in a music providing service

(96) Any of the above (68) to (85) is an information processing apparatus in a data download or a data providing service.

(97) Any one of (68) to (85) above is an information processing apparatus in any one of online lectures, real-time lectures, lecture materials, and streaming lecture services.

(98) Any one of (68) to (85) is an information processing apparatus in any one of services including broadcast, VOD, and AOD.

(99) Any of the above (68) to (85) is an information processing apparatus in a digital broadcast service

(100) Any one of the above (68) to (85) is an information processing apparatus in any one of the digital broadcasting services of broadcasting including DMB and Internet broadcasting.

In the detailed description of the present invention, the updated information may be included in the updated information, even when there is no information provided, including when the information is not updated.

Also in providing the information, the processing also includes providing the information including the case where the information has not been updated, including disconnecting the communication or terminating the processing.

For example, in the caching of the client server structure, if the user waits for a certain time and terminates after that time, there may be a method in which the server side does not respond to the update check or the request for providing the information. This is usually the case if you want to exit without a response if there is no update.

Of course, even if the connection is disconnected, the client side can detect whether or not the connection has been disconnected, which means that the update has not occurred, so that the corresponding action can be taken.

The information processing apparatus, which is a term used in the present invention, may also include an information apparatus and an information processing apparatus.

Therefore, it can be included in the information processing device as a PC, a notebook, a server, a PDA, a laptop, a router, a hub, and the like.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings.

And, the following examples do not limit the present invention.

1 is a view showing a problem of a conventional caching server.

In caching, there is a vulnerability that does not check whether the information is updated, and also shows that the problem is not solved.

Fig. 2A is a diagram of caching requests and caching in a single information processing apparatus.

Fig. 2B is a connection diagram of a caching apparatus in an information processing apparatus connected by a client server structure or communication.

Fig. 2C is a connection diagram of a caching device in a client server structure or an information processing device connected in communication in a structure having a proxy server or a caching server in the middle.

In this case, the information processing apparatus 101 of FIG. 2A may be either the information processing apparatus 100 or the information processing apparatus 200 in FIG. 2B.

In addition, the information processing apparatus 101 of FIG. 2A may be any one of the information processing apparatus 102, the information processing apparatus 201, or the information processing apparatus 400 in FIG. 2C.

And a) in the relationship between the information processing apparatus 102 and the information processing apparatus 400 in FIG. 2C, the information processing apparatus 100 of a-1) FIG. 2B differs from the information processing apparatus 102 in FIG. 2C. 2-2 is the same as the information processing apparatus 201 of FIG. 2C, and b) the information processing apparatus 400 and the information processing apparatus 201 of FIG. 2C are the same. In relation, b-1) the information processing apparatus 100 of FIG. 2B is the same as the information processing apparatus 400 of FIG. 2C, and b-2) the information processing apparatus 200 of FIG. 2B is the information processing apparatus (FIG. 2C). 201), and c) in the relationship between the information processing apparatus 102 and the information processing apparatus 201 in FIG. 2C, the information processing apparatus 100 of FIG. 2B is the information processing apparatus of FIG. 2C. Same as 102, c-2) The information processing apparatus 200 of FIG. 2B is the same as the information processing apparatus 201 of FIG. 2C.

In the following embodiment will be described by the number shown in Figure 2b.

In the case of a device to be treated alone, all steps, all means, or all parts shown in the drawings may be processed in a single device or in a single device group and a single device group including a single device group connected to the single device. Includes applicable.

And, if the device is not processed alone, it is connected between the devices through the communication network (300).

That is, the information processing apparatus 100 may be connected to the information processing apparatus 200 through the communication network 300.

In addition, a11) the information processing device 102 may be connected to the information processing device 201 through the communication network 300, b11) the information processing device 102 is the information processing device 400 to the communication network 300. C11) The information processing apparatus 400 may also be connected to the information processing apparatus 201 through the communication network 300.

4A is a configuration diagram of a single information processing device.

4B is a configuration diagram of an information update confirmation request information processing apparatus.

4C is a configuration diagram of an information update confirmation determination apparatus.

4A, 4B, and 4C, the device numbers in parentheses in the indications with the device numbers are not recommended, but are examples showing that such cases may exist.

Example 1

3A is a diagram of caching information processing.

3B is a diagram of caching information means.

(6) in the caching, means (M1) for confirming whether or not the information has been updated, requesting for confirmation of whether or not the information has been updated (S1),

Means (M5) for receiving information (IUE) including information on whether the information has been updated, including step (S5) of receiving information (IUE) including information on whether the information has been updated, and in step S5 after step S1 It includes the information processing method characterized in that the processing.

(39,67) In the caching, in the information processing apparatus,

Means (M1) for requesting confirmation of whether the information has been updated,

A program (M5) for receiving information (IUE) including information on whether the information has been updated, the program for execution including execution by said M1 means and later by said M2 means, and said program of (39); And an information processing apparatus readable recording medium having recorded thereon.

(73) in caching,

P1 requesting to check whether the information is updated,

And an information processing unit (P5) provided with information (IUE) including information on whether the information has been updated, and including the information processing apparatus including the processing by the means P2 after the means P1.

This will be done with the following Embodiment 2) and Modified Embodiment 2-1 in the case of one device, but especially in the case of processing separately from another device, the structure of the client server or communication connection The structure of the devices is an example of processing on the request side.

If the web server and web client are structured, this section contains the description of the parts handled by the web client.

Modified Example 1-1)

In the above (1) to (100), it can be applied including the case applied to the first embodiment.

For example, in caching, if there is caching in the broadcast service, the first embodiment shows a modified embodiment of caching in the broadcast service. The same application to the same numbers as) is in accordance with Example 1) above.)

Example 2

In this embodiment, the caching information processing diagram shown in Fig. 3A and the caching information means shown in Fig. 3B will also be described with reference to Figs. 4A to 4C.

(7) in the caching, means (M2) for receiving a request for confirmation of whether or not the information has been updated, for receiving confirmation of whether the information has been updated (S2),

Means (M3) for determining whether the information has been updated, determining whether the information has been updated (S3),

Means (M4) for providing an IUE, comprising the step of providing an IUE (S4), wherein step S2 is given to step S3, and step S3 is given to step S4 and processed; It includes.

(40,67) caching, in the information processing apparatus,

Means (M2) for receiving a request for checking whether information has been updated;

Means (M3) for determining whether the information has been updated,

And a program for execution including means (M4) for providing an IUE, and an information processing apparatus readable recording medium on which the program of (40) is recorded.

(74) in caching,

Receiving request for information update unit (P2),

Determining whether the information is updated (P3),

And an information processing apparatus including a unit P4 for providing an IUE.

This may be done in the case of one device together with the above-described embodiment 1) and the modified embodiment 1-1), but in the case of processing separately from another device, particularly in the structure of the client server or communication connection. The structure of the devices is an example of processing on the request side.

If this is a web server and web client architecture, this section describes the web server side. If it is a web server and a proxy or caching server structure, this section describes the web server side, and the web client and proxy or caching server. In the structure of a and, this part contains a description of what the proxy or caching server handles.

Modified Example 2-1

In the above (1) to (100), it can be applied including the case applied to the second embodiment.

For example, in the caching, if there is caching in the broadcast service, the second embodiment shows a modified embodiment of caching in the broadcast service. The same application for the same number as) is in accordance with Example 2) above.)

Example 3

(8) In the caching, the IUE of step S5 or S6 includes any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information update information (ICUDT). It includes.

(41,67) In the caching, the M5 means or M6 for processing the IUE including any one of information (ICUDT) capable of distinguishing information generation information or information update information in the information processing apparatus. And a program for execution, including means, and an information processing apparatus readable recording medium on which the program of (41) is recorded.

(75) An information processing apparatus comprising the P5 or P6 unit for processing an IUE including any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information generation information in caching. It includes.

This embodiment 3) can be applied to the above embodiment 1), embodiment 2), modified embodiment 1-1), modified embodiment 2-1).

Example 4

(9) In caching, the step of storing or caching the information (S61) includes an information processing method comprising an ICUDT.

(42,67) In the caching, a program for executing the information processing apparatus including means (M61) for storing or caching information including the ICUDT, and an information processing apparatus capable of reading the program of (42), which can be read. Includes record sales.

(76) In the caching, the information processing apparatus including the information storage or caching unit P61 including the ICUDT is included.

This embodiment 3) can be applied to the above embodiment 1), embodiment 2), modified embodiment 1-1), modified embodiment 2-1).

Example 5

In the caching, an information processing method comprising any one of the above-described steps, a program comprising any one of the above-mentioned means, and an information processing apparatus that records the program. An information processing apparatus including a recording medium and one of any of the above-described parts is included.

These embodiments include, for example, whether the proxy server updates the information and receives the information request from the client, requests for the service server, requests for the service server, and stores the requested information. The part that provides the part, the information requested to the client, and whether the information is updated or not may be used when the server is divided into several clusters and processed.

Example 6

There may be an example including both the embodiment 1) and the embodiment 2).

In this case, the steps S6, S61, and S62 may be included, M6, M61, and M62 may be included, and P6, P61, and P62 may be included.

In this case, it can be used mainly in proxy server or caching server.

Modified Example 6-1

Of course, this modified embodiment can be implemented by applying the modified embodiment 1-1 and the modified embodiment 2-1 together.

In caching, there is an effect of checking whether information is updated.

By checking whether the information is updated or not, the information that has not been updated does not make a request for providing information when the requested information exists on the request side, thereby further securing network usable bandwidth, and the traffic is relatively Compared to the conventional method, the effect is not congested, and when the information is requested, the request is made to check whether the information is updated. In addition, there is an effect of reducing the traffic of the network interface unit of the information processing apparatus due to not being provided with information that has not been updated, and resource savings and traffic reduction effects on the bus, CPU, and RAM in the information processing apparatus. .

Claims (16)

(6) in caching, requesting confirmation of whether or not the information has been updated (S1), And receiving information (IUE) including information on whether the information has been updated (S5). (7) in caching, receiving a request for checking whether information is updated (S2), Determining whether the information is updated (S3), And providing the IUE (S4). (8) In the caching, the IUE of step S5 or S6 includes any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information update information (ICUDT). (9) In the caching, the step of storing or caching the information (S61) includes an ICUDT. (39) In the caching, in the information processing apparatus, Means (M1) for requesting confirmation of whether the information has been updated, A program for executing, including means (M5) for receiving information (IUE) including information on whether information has been updated (40) In the caching, in the information processing apparatus, Means (M2) for receiving a request for checking whether information has been updated; Means (M3) for determining whether the information has been updated, A program for execution including means (M4) for providing an IUE (41) In the caching, the M5 means or M6 means for processing the IUE including any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information update information, from the information processing apparatus. Program to execute including (42) In the caching, a program for causing the information processing apparatus to include and execute means (M61) for storing or caching information including the ICUDT. (73) In the caching, the information processing apparatus including a unit (P1) for requesting confirmation of the updated information, and a unit (P5) receiving information (IUE) including the information whether the information is updated. (74) An information processing apparatus including caching, comprising: a receiving unit (P2) receiving a request for checking whether information is updated, a determining unit (P3), and a providing unit (P4) providing an IUE. (75) An information processing apparatus comprising the P5 or P6 unit for processing an IUE including any one of information (ICUDT) that can distinguish information generation information or information that can distinguish information generation information in caching. (76) In the caching, an information processing apparatus including a unit (P61) for storing or caching information including the ICUDT. In caching to check whether information is updated, Requesting confirmation of whether the information has been updated (S1), Receiving information (IUE) including information on whether the information has been updated (S5); Receiving a request for checking whether the information is updated (S2), Determining whether the information is updated (S3), Providing an IUE (S4), Information processing step (S6), Storing or caching the information (S61), Information processing method comprising any one of the step (S62) of displaying information. In the caching for checking whether the information has been updated, in the information processing apparatus, Means (M1) for requesting confirmation of whether the information has been updated, Means (M5) for receiving information (IUE) including information on whether the information has been updated, Means (M2) for receiving a request for checking whether information has been updated; Means (M3) for determining whether the information has been updated, Means for providing an IUE (M4), Information processing means (M6), Means for storing or caching information (M61), A program for execution comprising any of the means (M62) for displaying information In caching to check whether information is updated, P1 requesting to check whether the information is updated, Receiving information (IUE) including information whether the information is updated (P5), Receiving request for information update unit (P2), Determining whether the information is updated (P3), P4 providing the IUE, Information processing unit (P6), A unit (P61) for storing or caching information, Information processing apparatus including any one of the section P62 for displaying information An information processing apparatus readable recording medium which records the program according to the above items 5 to 8 or 14.