I am now trying to develop the PG to support real-time backup.My architecture is somehow similar to the "Database Mirroring" technology of SQL Server 2005.The server end of the system is consisted of two DB servers one is the Principal server,the other is the Mirror server.whenever the Principal flushes its log buffer to the local log file,it must send the content of its buffer to the Mirror simultaneously.After the mirror receives the buffer,it write to its own log file and send a response message to the Principal,then the Mirror redo/undo its log.By this way, we can guarantee the database instances of the two servers identical.
But now I encounter a problem.I don't know where the functions to control log buffer are.Which code segment may I refer to? I have just participated the PG project for a short time,and I will appreciate your help very much! Look forward to you all! Charlie Wang ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
