MySQL NDB Cluster
Oracle's official shared-nothing, in-memory distributed storage engine and clustering technology for MySQL — built for very high availability and horizontal scaling, with no single point of failure.
MySQL NDB Cluster combines the standard MySQL server with NDB, an in-memory clustered storage engine, to form a shared-nothing distributed database. Management nodes, SQL/API nodes, and data nodes each run as separate processes, and data is automatically partitioned and replicated — two replicas per partition by default — across data nodes, so no single node failure interrupts service.
It targets workloads that need very high availability and predictable, low-latency reads and writes at scale; it originated for telecom session and subscriber databases and has since been used in other high-throughput, high-availability deployments. It’s distributed as part of the MySQL Community offering under GPLv2 — alongside a Carrier Grade Edition with Oracle commercial support — and ships its own release lines (including an 8.4 LTS track) in step with the core MySQL server.
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