Two things to point out as a VoltDB engineer. 1) VoltDB's global transactions are much slower than its partitioned transactions, but it's relative. It can stil

Two things to point out as a VoltDB engineer. 1) VoltDB's global transactions are much slower than its partitioned transactions, but it's relative. It can still do hundreds or thousands per second. 2) Making this number faster for common cases is ongoing work. In upcoming 4.0, multi-partition consistent reads will get about a 10x performance boost if they're bottlenecked on transaction overhead. This allows us to do up to 50k/sec global reads while doing 500k/sec partitioned writes. Expect improvements for global writes in 2014.