MySQL Cluster vs. Oracle RAC
I am going to build a very large database and don't need too many features. MySQL seems fine in that respect. Does the cluster version of MySQL scale as well as Oracle? Should I go with a different product for a very large database?

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MySQL makes the following statements about their Cluster:

  • Near-linear scalability on preferred system configurations
  • 99.999% availability
  • Sub-second automatic failover

Oracle RAC requires shared access to storage. Such storage can be very expensive to purchase and maintain. MySQL Cluster requires no shared storage, and is relatively inexpensive to maintain. You can run the entire cluster on a single desktop machine. You can incrementally add commodity hardware to your cluster as needed.

See MySQL's Cluster description for more details.

This was first published in November 2006

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