Clustering
Disambiguation
Section titled “Disambiguation”“MySQL Cluster” disambiguation…
- NDB Cluster — A specialized, mostly in-memory, engine. Not widely used.
- Galera Cluster aka Percona XtraDB Cluster aka PXC aka MariaDB with Galera. — A very good High Availability solution for MySQL; it goes beyond Replication.
See individual pages on those variants of “Cluster”.
For “clustered index” see page(s) on PRIMARY KEY.