"Is 50% faster than Postgres on transaction workloads" - That is a very big claim! 50% faster on everything? Is it a strict improvement across the board or are there tradeoffs that make some workloads slower?

The 50% is specifically on percona-tpcc[0]. I got there through a mix of batching (postgres processes a row at a time), prefetching, and several handful of other optimizations.

  [0] https://github.com/Percona-Lab/sysbench-tpcc