JPH0773130A - Distribution processing system - Google Patents

Abstract

PURPOSE:To efficiently execute a processing for synthesizing results processed in respective distributed places on a distribution processing. CONSTITUTION:Respective servers 10 are systems which are provided with individual data bases 11 and are connected by a line network 12 so that they can communicate one another. The data collection part 14 of a management server 13 periodically executes a processing for collecting data by sequentially communicating with the data take-out parts 16 of all the necessary servers 10 through the line network 12 and holds data which are collected lately as collected data 18. The respective data take-out parts 16 read requested data from the respective data bases 11 and transfer them to the data collection part 14 being a request source when data is requested from the data collection part 14. The data request parts 17 of the respective servers 10 give a request to the data response part 15 of a management server 13 if need and receive data returned from the data response part 15 as the collection result of necessary data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed processing system, and more particularly to a distributed processing system capable of efficiently performing processing for integrating the results of processing distributed to various places.

[0002]

[Problems to be Solved by the Prior Art and Invention] In a company having sales offices laid out nationwide, local processing for each sales office is performed by a computer of each sales office, and they are connected to each other. A so-called distributed processing system has been widely used, which is connected by a network to perform necessary communication with each other.

FIG. 3 is a block diagram showing an example of the configuration of such a distributed processing system. There is a local area network (LAN) 1 for each remote place, and a server 2 (hereinafter referred to as "LAN") for each LAN. Servers A, B, etc.) and necessary workstations 3 etc. are connected when necessary for explanation, and processing of many jobs is completed by the server 2 on each LAN by communication within each LAN. To be done. Therefore, in many cases, each server 2 individually has each database 6 related to the shared processing.

Further, each LAN 1 is connected to an appropriate wide area network (WAN) 4 by a connection device 5, and communication between LANs is possible via the WAN. That is, the system configured by each LAN is provided corresponding to, for example, sales offices in various places, and the WAN is used for processing across the sales offices and for communication related to all the sales offices.

In such a distributed processing system, it may be necessary for one server 2 to collect and process data resulting from processing by another server 2, for example.
For example, this is a case where the sales situation of each store is desired to be known at another store.

In such a case, for example, the data requesting unit 7 of the server A is activated by a data acquisition request transferred from a certain workstation 3 on the LAN 1 having the server A to the server A, and the data requesting unit 7 is activated. 7 is LAN1 and WA
A session is established with each data extraction unit 8 on all required servers 2 (including the own server) via N4.

In each of these sessions, the data requesting unit 7 requests the data fetching unit 8 to transfer the required data, and each data fetching unit 8 reads out the requested data from its own database 6 and sends the requested data. Transfer to the data request unit 7.

When the data request unit 7 collects the necessary data from each server as described above, the data requesting unit 7 performs the necessary processing on the collected data and passes it to, for example, the workstation 3 of the request source.

However, since a communication path with each server is set via the network and a process of exchanging data is sequentially performed with a large number of partner servers, data is collected until a necessary process result is obtained. Response time becomes long, and if each server that requires similar data collects data, the traffic of the network increases abnormally.

For this reason, in the case where the above-described processing is standardized in advance and is always performed regularly, it is desirable to take such conditions into consideration so that the processing can be performed more efficiently. Be done.

An object of the present invention is to provide a distributed processing system capable of efficiently performing a stylized processing for integrating the results of processing distributed to various places.

[0012]

FIG. 1 is a block diagram showing the configuration of the present invention. The figure shows the configuration of a distributed processing system, which has a plurality of servers 10 arranged in a distributed manner.
Reference numeral 10 denotes a system in which data processed by the server is held in each individual database 11, and the servers 10 are connected by a network 12 so that they can communicate with each other. A section 14 and a data response section 15 are provided to connect to the network 12, and each server 10 has a data extraction section.
16 and a data requesting unit 17 in the required server 10, respectively.

The data collecting unit 14 sequentially communicates with all required data extracting units 16 via the network 12,
A process of collecting required data held by the server is periodically executed, and a processing result of recently collected data is held as collected data 18.

When there is a data request from the data collecting unit 14, each data fetching unit 16 reads out the data of the request from each of the databases 11 and requests the data collecting unit of the request source.
Transfer to 14.

When a request for collecting predetermined data is made, each data request unit 17 notifies the required data response unit 15 of the request and requests the data returned from the data response unit 15 for the required data. Received as a data collection result.

The data response section 15 collects data collected by the data collection section 14 when requested by the data request section 17.
18 is returned to the data request unit 17 of the request source.

[0017]

According to the distributed processing system of the present invention, the management server periodically executes batch data collection for planned data collection, holds the latest collection data, and when there is a request, the request source Send the collected data to the server.

Therefore, the traffic of the network for data collection does not increase redundantly,
The server can collect data immediately when needed only by communicating with the management server.

[0019]

FIG. 2 is a block diagram showing the configuration of an embodiment of the distributed processing system of the present invention. In FIG. 2, the line network 12 of FIG. 1 is the LAN 1 of each place as in the case of FIG.
And W connecting those LANs 1 via the connection device 5.
It is composed of AN4.

The database 11 and the data extraction unit 16 provided in each server 10 may be the same as the conventional database 6 and the data extraction unit 8 described above. However, unlike the past,
According to the present invention, a request for retrieving data will be issued only from the management server as described later.

Further, for example, the data requesting unit 17 of the server A is activated by a data acquisition request transferred from the workstation 3 on the LAN 1 of the server A to the server A, similarly to the data requesting unit 7, and the data is acquired. A collection process is performed, but as described below, data collection is processed only by communication with the management server according to the present invention.

For the above reasons, according to the present invention, for example, the management server 13 is provided in a specific LAN 1 so that the management server 13 can communicate with each of the other servers 10. The management server 13 may be a dedicated server having the function of a management server described below, or a certain server 10 may be used as a management server. Whichever is selected, the situation of communication traffic, It is necessary to select it in consideration of the processing capacity of the server and economical efficiency.

The data collection unit 14 of the management server 13 uses, for example, a so-called timer interrupt by a known clock mechanism, for example, 1
Make it start every hour. The activated data collection unit 14 calls the servers A, B, C, etc., which are the data collection targets, in a fixed order, establishes a session with the data extraction unit 16 of each server, and requests the necessary data. Then, the data returned from the data extraction unit 16 of each server is received, necessary processing is performed if necessary, arranged in a fixed server order, and stored as the latest data of the collected data 18.

As the collected data 18, for example, two sets of collected data storage areas are provided and alternately used, and the data returned from each server is sequentially stored in one area to collect data from all necessary servers. When the collection is completed, the area is notified to the data response section 15 as the area of the latest collected data,
The other area is released as an area used for the next data collection.

The data extracting unit 16 of each server operates in the same manner as the conventional data extracting unit 8 in the session with the data collecting unit 14 described above, reads out the designated data from the database 11, and stores it in the data collecting unit 14. Send it back.

The data requesting unit 17 is activated in the same manner as the conventional data requesting unit 7 when the data requesting request is issued from the work station 3 in the server in which the data requesting unit 17 is installed.

However, the data request unit 17 does not collect the data by itself, but calls the data response unit 15 of the predetermined management server 13 to open a session and requests the data response unit 15 to transfer the collected data. .

Therefore, the data response section 15 reads out the data in the area of the collected data 18, which has been notified as the area of the latest data from the data collection section 14 as described above, and requests the data request from the server A as the request source. Return to department 17.

Then, the data requesting unit 17 receives the returned data, performs necessary processing if necessary, and passes it to the workstation 3 of the requesting source.

[0030]

As is apparent from the above description, according to the present invention, in the distributed processing system, regarding the planned data collection, the management server periodically collectively executes the data collection, and the latest collection is performed. Data is retained, and when a request is made, the collected data is sent to the request source server, so that the traffic of the network for data collection does not increase redundantly, and the server communicates with the management server when necessary. There is a remarkable industrial effect that data can be collected immediately by using only.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional configuration example.

[Explanation of symbols]

 1 LAN 2, 10 server 3 workstation 4 WAN 5 connection device 6, 11 database 7, 17 data request unit 8, 16 data extraction unit 12 network 13 management server 14 data collection unit 15 data response unit

Claims (1)

[Claims] 1. A plurality of distributed servers (10) are provided, and each server holds data shared by the server in an individual database (11) so that the servers can communicate with each other. In the system connected to the network by the network (12), the management server (13) has a data collection unit (14) and a data response unit (1).
5) is provided to connect to the circuit network, each server (10) is provided with a data extraction unit (16), and each required server is provided with a data request unit (17), and the data collection unit (14) is provided. ) Communicates with all the required data extraction units (16) via the line network (12) to periodically execute a process of collecting required data held by the server (10). Then, the processing result of the recently collected data is retained as the collected data (18), and each of the data extraction units (16) collects the corresponding data when the data collection unit (14) requests the data. The data of the request is read from the database (11), and the data collection unit of the request source is read.
(14), each data request unit (17) notifies the required data response unit (15) of the request when a request to collect predetermined data is made, and the data response unit (17) The data returned from the data receiving unit is received as the collection result of the required data, and the data response unit (15) holds the data collecting unit (14) when requested by the data requesting unit (17). A distributed processing system configured to return the collected data to a data request unit of the request source.