| 摘要 |
A shared storage device stores therein a correspondence between data retrieved by data collectors bys previously searching a data controller and a search target data identification (ID) for searching the data controller. The data collector first accesses the shared storage device and uses the search target data ID to search the shared storage device. Upon corresponding data being stored in the shared storage device, the data collector retrieves the data and transmits the retrieved data and the search target data ID to a load-dispersing device. Upon the corresponding data not being stored in the shared storage device, the data collector uses the search target data ID to search the data controller. After retrieving the data from the data controller, the data collector transmits to the load-dispersing device and further transmits to the shared storage device, the read data and the search target data ID used to search the data controller.
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