JPH09231086A - Program distribution system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce disturbance to other jobs due to the load increase of a server computer and the load concentration of a line at the time of program distribution by requesting the distribution of a program to the server computer when a revision is old and a using frequency is high and requesting the distribution of updating information when the using frequency is low. SOLUTION: On the side of a client computer 4, an inquiry from a revision checking means 112 on the side of the server computer 1 is received and the revision collation and the using frequency of the program to be a distribution object are checked. As a result, whether to request the distribution of the program to the server computer 1, to request the distribution of only the updating information of the pertinent program or not to request the distribution is judged and a response to the revision checking means 112 of the server computer 1 is made. Thereafter, to the client computer 4, the program itself to be the object or the updating information of the program to be the object is distributed from the server computer 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a client-server type program distribution system, and more particularly to a program distribution system for reducing the program distribution load of a server computer and line load concentration during distribution.

[0002]

2. Description of the Related Art In the conventional program distribution in a client-server form, a server computer distributes a program to each client computer, but when the program is updated regardless of the frequency of use of the program on each client computer, The program is distributed from the server computer to all client computers. Referring to FIG. 3 illustrating a conventional technique, a server computer 71 in the form of a client server.
Checks all revisions of the target file 73 by the revision checking means 721 and sends the target file 73 to the client computer 74. Therefore, the load (concentration) on the server computer 71 at the time of program distribution increases as the number of client computers 74 increases, and further increases depending on the scale / number of programs to be distributed. At the same time, the centralized load on the line also increases. As a result, the load on the server computer 71 is increased, and the load on the line is increased.
Problems other than server operations will occur.

[0003]

In order to reduce the load on the server computer and suppress the line load concentration, the program to be delivered is delivered by a request from the client computer side based on the frequency of use or update information.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to alleviate a hindrance to other work due to an increase in load on a server computer and a load concentration on a line when a program is distributed in a client server form.

Therefore, in the client server system of the present invention, the server computer has a file device for storing the program to be distributed to the client computer, a means for transmitting update information of the program to the client computer, and a file for the program to the client computer. And a revision check means for transmitting the program update information or the program file in response to the program revision inquiry of the client computer. The client computer stores the program file transmitted from the server computer. Means for receiving, means for receiving the update information from the server computer, and frequency of use of the program held by the client computer itself. Managing means, means for registering and managing the update information for the program group held by the client computer itself, and checking the revision of the program held by itself for the program revision inquiry, and the revision is old and used. When the frequency is high, the program is requested to be distributed to the server computer, when the frequency of use is low, the update information is requested to be distributed, or when the program held by itself is used, the revision of the update information and the program is Revision check means for requesting distribution of the program when they do not match.

The client computer side receives an inquiry from the revision check means on the server computer side, and checks the revision collation of the program to be distributed and the frequency of use. As a result, it is determined whether the corresponding program is requested to be distributed to the server computer, only the update information of the corresponding program is requested to be distributed, or no distribution is requested, and a response is sent to the revision check means of the server computer. After that, the client computer receives the target program itself or the update information of the target program from the server computer. When the update information of the program is distributed, the revision management means on the client computer side receives the update information and turns on the update flag of the corresponding program on the management table of the program group. If the update flag is turned on when the client computer accesses the program, the revision check means of the server computer is requested to deliver the program.

[0007]

Next, the present invention will be described with reference to the drawings.

Referring to FIG. 1, which shows the system configuration of an embodiment of the present invention, a server computer 1 distributes a program to each client computer 4, and a file device 2 for storing a program group to be distributed. And. Program distribution means 11
Inquires the revision of the program to the client computer 4 at the time of program distribution, and according to the response from the client, the revision check means 112 for instructing the delivery of the program and update information, and the target program 21 is sent by the instruction of the revision check means 112. File transmission means 113 and revision check means 1
Update information (revision, creation date, etc.) according to 12 instructions
And an update information transmitting unit 111 that distributes only the information.

A client computer 4 connecting to the server computer 1 through a local area network (hereinafter LAN) 5 is a program receiving means 4 corresponding to the program distributing means 11 from the server computer 1.
1 and a file device 3 for storing a distributed program group. The program receiving means 41 inquires of the program usage frequency management means 411 that manages the usage frequency of the program group to be distributed and the program usage frequency management means 411, and judges whether to distribute the target program or update information of the target program to the server computer. 1 and a file receiving means 413 for receiving the target program 21 distributed from the server computer 1, and receiving update information (revision, creation date, etc.) of the target program distributed from the server computer 1. In addition, the program group management table 415 has an update information receiving unit 414 that registers an update flag. Further, the program usage frequency management unit 411 counts the usage frequency of the program when the client computer 4 uses the program (when the program is loaded).

Next, the operation of this embodiment will be described with reference to FIG. 2 showing an information transfer path. In the server computer 1, the revision check unit 112 inquires the revision check unit 412 of the client computer 4 about the file name and the revision information regarding the program 21 in which the revision update has occurred. The revision check means 412 checks the target program 31 based on the revision information, and the server computer 1
When the revision of the target program on the side is the latest, the program usage frequency management means 411 is inquired about the usage frequency of the target program 31. Program usage frequency management means 411
Notifies the revision check means 412 of the frequency of use of the program. Revision check means 412
Responding to the usage frequency of the program usage frequency management means 411, it responds to the server computer 1 whether to request the distribution of the relevant program or only the update information of the relevant program. When distributing the corresponding program, the revision checking means 112 causes the file transmitting means 113 to transmit the target program 21 to the file receiving means 413 via the LAN 5. The client computer 4 receives the target program 21 by the file receiving means 413 and replaces the target program 31 of the client computer 4 itself. Further, when only the update information is distributed, the update information transmitting unit 111 transmits the update information (revision, creation date, etc.) to the update information receiving unit 414.

In the client computer 4, the update information receiving means 414 receives the update information, and the update flag indicating that the update of the target program has occurred is registered in the program group management table 415. When the client computer 4 uses a program to which only update information is distributed, the reviation check unit 412 sets the update flag on the program group management table 415 to ON when access to the target program 31 is detected. Check if it is done. When the update flag is set to ON, the revision check means 412 requests the server computer 1 to deliver the target program 21, and the file transmission means 113 to the file reception means 41.
The target program 31 of the client computer 4 is replaced via the step 3. The replaced replaced program is loaded into the memory and used.

In this embodiment, the client-server type is formed by LAN, but the wide area communication network (W
It is clear that this can also be applied to AN).

[0013]

According to the present invention as described above,
When the program is distributed from the server computer to the client computer, the load on the server computer side is reduced, and the performance of the server computer is not significantly deteriorated even during the program distribution.

Further, according to the present invention, line load concentration at the time of program distribution can be reduced, performance deterioration of other operations using the same line can be suppressed, line performance can be efficiently maintained, and lines can be shared.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of FIG.

FIG. 3 is a diagram showing a conventional technique.

[Explanation of symbols]

 1 Server Computer 2 File Device 3 File Device 4 Client Computer 5 LAN 11 Program Distribution Means 21 Target Program 31 Target Program 41 Program Receiving Means 111 Update Information Sending Means 112 Revision Checking Means 113 File Sending Means 411 Program Frequency Management Means 412 Revision Checking Means 413 File receiving means 414 Update information receiving means 415 Program group management table

Claims (1)

[Claims] 1. In a client-server system, a server computer has a file device for storing a program to be distributed to the client computer, means for transmitting update information of the program to the client computer, and means for transmitting a file of the program to the client computer. And a revision check means for transmitting program update information or a program file in response to a program revision inquiry of the client computer, and the client computer for receiving the program file transmitted from the server computer. A means for receiving the update information from a server computer and a means for managing the frequency of use of a program held by the client computer itself A means for registering and managing the update information for the program group held by the client computer, and checking the revision of the program held by itself for the program revision inquiry, and when the revision is old and frequently used , When the program is requested to be distributed to the server computer, and when the frequency of use is low, the update information is requested to be distributed, or when the program held by itself is used, the update information does not match the revision of the program. A program distribution system comprising: a revision check unit that requests distribution of the program.