APPARATUS FOR MANAGING BUSINESS OBJECTS IN MEMORY OF WEB-BASED APPLICATION SYSTEMS AND METHOD THEREOF

摘要

PURPOSE: A device and a method for managing a business object on a memory of a web based application system are provided to efficiently manage the state information and the data of the business object by using a cache technology and an object pool management technology. CONSTITUTION: An instance manager(11) returns an object instance if a server requests the object instance. An instance cache(12) stores the object activated by processing the user's request and joined in transaction in the memory, and returns the object instance requested by the instance manager(11). An activator(13) reads the object state from a database(15), stores it in the object instance, and returns it. An LRU(Least Recently Used) queue(16) stores the object not receiving the user's request at the instance cache(12) and not joined in the transaction. A timeout checker(17) stores the object state not processing the user's request at the LRU queue(16) in the database(15), and returns the object to the instance pool(14). A passivator(18) records the state of the object instance in the database(15) if the object not receiving the user's request is received, and stores the object instance in the instance pool(14).