MySQL Cluster Persistent to Disk
By Thierry Manfe on Nov 23, 2009
I am late following up on a question we got during the Webinar last Wednesday on High Availability for Web applications. The question was about whether MySQL Cluster is using disks for persistency.
In previous releases of MySQL, the NDB cluster engine (a.k.a. MySQL Cluster) would log on disk but would store all the data in memory. Eventually asynchronous checkpoints would flush data to disks. Reliability was also ensured through intra-cluster replication on different nodes.