I am not sure this solves anything. From their implementation details I could just mount mysql on a memory filesystem and have 100% of MySQL's feature. If I need near 100% assurance that the data will be saved, there is always block replication, transaction logs and regular replication. their transition module adds nearly nothing but overhead, since stored procedures are better, and if you have the need for ultra performance, there is always the ability to access mysql at the command level and bypass sql entirely.