vioft2nntf2t|tblJournal|Abstract_paper|0xf4ff0d26260000000a0d000001001000
In this paper we propose the method for preparing the preliminary server which can perform the role of the primary server when it may be attacked or other abnormal issues happen through the data synchronization system based on the web service. We propose and realize a new method to establish the replication system which can replace the primary server by changing the IP address of the secondary server in case the primary server has stopped working while serving the customers the information preparing the primary and secondary servers. The important point is that the changed data of the primary server should be sent to the secondary server’s database and that the added files should also be sent. In order to solve this problem we suggest the immediate synchronization protocol based on the web service and propose the method to safely establishment the secondary server through the data synchronization system of streaming style. This method makes the services of the several servers identical, thus can also be applied to the cloud computing.