It is not clear for many MySQL users that Percona XtraDB Cluster (PXC) and MariaDB Galera Cluster depend on the same Galera library i.e used in Galera Cluster for MySQL which is provided by Codership team:
- Galera Cluster: MySQL Server (by Oracle) + Galera library.
- Percona XtraDB Cluster: Percona Server + Galera library.
- MariaDB Galera Cluster: MariaDB Server + Galera library.
But the question is, are there any performance differences between the three of them ?