is an organized method of trying to find out what you are going to do after you cannot do what you are doing now
MySQL Master-Slave Replication on Ubuntu
MySQL replication is a process that allows data from one database server to be automatically copied
MySQL replication is a process that allows data from one database server to be automatically copied to one or more servers.
MySQL supports a number of replication topologies with Master/Slave topology being one of the most well-known topologies in which one database server acts as the master, while one or more servers act as slaves. By default, the replication is asynchronous where the master sends events that describe database modifications to its binary log, and slaves request the events when they are ready.