TPM (Transaction Processing Monitor)

Software that allows you to modify an application to store in-flight transactions in an external location until that transaction has been committed to all possible copies of the database or filesystem, thus ensuring completion of all copied transactions. A TPM protects against data loss at the expense of the CPU overhead involved in applying the transaction in each database replica. Software that provides a reliable mechanism to ensure that all transactions are successfully committed. A TPM may also provide load balancing among nodes.