Voltdb

High Quality Content by WIKIPEDIA articles! VoltDB is an in-memory database designed by Michael Stonebraker who was involved in Ingres and PostgreSQL. It is ACID-compliant. It is a RDBMS. It uses a shared nothing architecture. It is free software released under the terms of the GNU General Public License version 3. VoltDB is based on the academic HStore project. VoltDB is a relational database that supports SQL access from within pre-compiled Java stored procedures. The unit of transaction is the stored procedure which is Java interspersed with SQL. VoltDB relies on horizontal partitioning down the individual hardware thread to scale and k-safety (synchronous replication) to provide durability.