Mysql/galera is a distributed version of MySQL that can be used to create a synchronous multiple master MySQL (InnoDB) cluster. It is based on the concept of write settings synchronization and the patched MySQL server as well as the galera composition, a universal synchronous backend that implements the Wsrep interface. Mysql/galera has a truly multiple-master function that can be modified at the same time on different nodes in the same table. This is truly highly available and will never lose a committed transaction.
The Mysql/galera 1.0 version extends the Galera cluster of MySQL Milestone 1.0. This version supports MySQL 5.5.15 and version 5.1.58, Writeset disk cache, rigorous synchronous reading, and improved stability across the WAN.
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