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摘要

PROBLEM TO BE SOLVED: To reduce the miss hit rate of cache even when the number of received nodes is increased and to perform cache while considering the pattern of access to a node by utilizing hot spots on graphs different for each of users. SOLUTION: In a receiver 110, a node (streamer 102) distributed by a distributor 100 is filtered by a filter 111 and when a cache manager 112 is to cache the filtered node into a cache memory 113, an LRU list and a FIFO buffer are linked. At the same time, plural nodes are stored in one element on the LRU list.