Patent ID: 6243719
Filing Date: 2001-06-05
Classification: G06F,Y10S

Abstract:
A data caching apparatus in a client/server distributed system, said apparatus comprising a database for storing a predetermined data, a server for administrating said database, a client which communicates with said server and refers to said database, retention means provided in said server for retaining a predetermined number of duplicates of said data, reference request detection means for detecting that a request is made from said client for reference to said database, caching means which preferentially sends a duplicate of reference request data retained in said retention means back to said client when said reference request data is retained in said caching means and sends actual reference request data back to said client when said reference request data is not retained in said caching means, data update means which retrieves said database and updates said duplicate data retained in said retention means, and execution means for executing said data update means in said server background when said reference request detection means detects a request for reference to said database.