| 摘要 |
<P>PROBLEM TO BE SOLVED: To facilitate development of an application program and enhance program development efficiency in a duplex system which synchronizes memories of an active server and a stand-by server. <P>SOLUTION: A duplex system comprises an active server 1 and a stand-by server 2. The active server 1 comprises: application processing means 101 and 103 which perform application processing; and first synchronization means 102 and 104 which, in response to a first update request generated in the application processing for updating a main memory 12 of the active server 1, transmit a second update request to the stand-by server 2 for updating a main memory 22 of the stand-by server 2. The stand-by server 2 comprises second synchronization means 202 and 204 which update the main memory 22 of the stand-by server 2 on receiving the second update request from the active server 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
