Data server access manner and LAN

摘要

PROBLEM TO BE SOLVED: To improve the availability of a cache as a whole system and to reduce traffic between a cache server and a data server by accessing to the data server through the cache server of an address, which is obtained in a cache server address introduction stage. ;SOLUTION: Cache server registration information is generated (S1). The address S of the data server, namely, a character string (s) is multiplied by a hash function H. The character string (s) corresponds to a numeric value P by one to one (S2). The numeric value P is mod-converted so that it is settled within the number (m) of cache servers (S3). Thus, any hushing value I of '0' to m-1 is allocated to the address S of the data server (S3). Then, the hash value I and cache server registration information as an index are referred to and the address of the corresponding cache server is obtained (S4). The target data server is accessed through the cache server of the obtained address (S5).;COPYRIGHT: (C)1998,JPO