Load distribution system and method
A technology for load distribution and configuration management, applied in the fields of botanical equipment and methods, transmission systems, instruments, etc., which can solve the problems of hit count estimation, difficult to handle peak phenomenon, etc.
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no. 1 example
[0033] figure 1 is a block diagram showing the configuration of the load distribution system according to the first embodiment of the present invention. figure 1 The system includes a plurality of (for example, 6) Web server computers 11-1 to 11-6 and a load distribution device 12. Web server computers 11-1 to 11-6 and load distribution device 12 are connected to each other via a network (internal network) 13 incorporated into the system. Further, the load distribution device 12 is connected with a plurality of client computers (not shown) via a network (external network) 14 not incorporated into the system.
[0034]Web server computers 11-1 to 11-6 process requests from client computers. When receiving a request from a client computer via the external network 14, the load distribution device 12 selects one server computer from among the Web server computers 11-1 to 11-6 and causes it to process the request. As for the selection, any one of the selection methods (1) to (3) ...
no. 2 example
[0061] image 3 is a block diagram showing the configuration of a load distribution system according to a second embodiment of the present invention. In this figure, with figure 1 Elements that are the same as elements in are labeled with corresponding reference numerals. image 3 system with figure 1 The difference of the system is that in the former, with figure 1 The load distribution device 22 corresponding to the load distribution device 12 has no load information acquisition unit. Instead, with figure 1 The Web server computers 21-1 to 21-6 corresponding to the Web server computers 11-1 to 11-6 respectively include load information acquisition units F1 to F6. The load information acquisition units F1 to F6 acquire only load information on the Web server computers 21-1 to 21-6, respectively, which is the same as figure 1 The load information acquisition unit 120 is different. Further, the items of computer load information acquired by the load information acquiring...
no. 3 example
[0066] Figure 7 is a block diagram showing the configuration of a load distribution system according to a third embodiment of the present invention. In this figure, with figure 1 or image 3 Components that are the same as those in are labeled with corresponding reference numerals. figure 1 The load distribution device 12 shown is used as Figure 7 the load distribution device of the system, and image 3 The shown Web server computers 21-1 to 21-6 are used as Figure 7 The system's web server computer. Figure 7 The system is characterized in that it uses both the load information acquisition unit 120 of the load distribution device 12 and the load information acquisition units of all the load distribution target computers, wherein the latter includes the Web server computers 21-1, . . . , and 21 -6 load information acquisition units F1, . . . , and F6. That is, in order to determine the number of PN computers to be used, Figure 7 The system utilizes both the load in...
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