Web request broker controlling multiple processes

(57) the web server constituted so that the demand of a client may be answered through a network like summary world ワイブウェブ, The web listener which has HyperText Transfer Protocol (HTTP) Damon, In order to answer two or more extended programs and the client request which are constituted so that each operation may be performed, the web demand broker constituted so that the availability of the instance of the program which specified one program and was specified may be determined is included. A web demand broker maintains control of two or more instances of each server extension program so that the server operation extended without overwhelming a server resource may be given. A web demand broker maintains specified minimum number of a program of instances by a memory, and each is performed in a self address space. If it determines whether a web demand broker has an instance which can use the specified program in an existing number of instances and other instances which can be used cannot be found, the new instance of a program will be イニシエート (ed) alternatively. If there is no instance which can be used and an existing number of instances exceed the maximum predetermined number, a web demand broker will send the answer that returned the answer to the web listener and a demand was not processed, through a network.