Sequoia: Welcome to the Sequoia Project!: "What is Sequoia?
Sequoia is a transparent middleware solution for offering clustering, load balancing and failover services for any database. Sequoia is the continuation of the C-JDBC project∞. The database is distributed and replicated among several nodes and Sequoia balances the queries among these nodes. Sequoia handles node failures and provides support for checkpointing and hot recovery."