One of the most advanced features built into MySQL is its ability to connect two or more servers together where all servers maintain a copy (replica) of the data for redundancy. Database administrators and systems architects who manage infrastructures understand the need for building in redundancy while keeping maintenance chores to a minimum. One of the tools used to achieve this is a class of features that make the server or service available as much as possible. We call this high availability (HA).
Not only is high availability a key factor in establishing robust, always ready ...
