Patent ID: 7818289

Claim:
A network control system comprising: a data controller that stores therein search target data representing a search target; a request terminal that outputs identification data uniquely identifying the search target data and retrieves the search target data corresponding to the identification data; a plurality of data collectors that retrieve the search target data from the data controller by using the identification data output from the request terminal; a load-dispersing device that relays the identification data and the search target data between the request terminal and the data collectors; and a shared storage device that receives the identification data and the search target data from the data collectors and establishes and stores therein a correspondence between the identification data and the search target data, wherein each of the data collectors includes a shared storage device searching unit that searches the shared storage device by using the identification data received from the load-dispersing device, the shared storage device searching unit retrieving the search target data from the shared storage device, and transmitting the retrieved search target data to the load-dispersing device, when the search target data corresponding to the identification data is stored in the shared storage device; a data controller searching unit that searches the data controller by using the identification data, retrieves the search target data corresponding to the identification data, and transmits the retrieved search target data to the load-dispersing device, when the search target data is not stored in the shared storage device at the time of searching by the shared storage device searching unit; and a storage requesting unit that transmits to the shared storage device, the search target data retrieved by the data controller searching unit and the identification data corresponding to the search target data, and requests the shared storage device to establish and store therein a correspondence between the search target data and the identification data.