All HFT systems that I know (Tora Trading Services, Flow Traders, Open HFT) use Chronicle, memory mapped files without using any RDBMS. More, the best HFT systems operate below 100 microseconds already, to stay competitive. Hibernate is a tool meant for OLTP transactions, not OLAP, not HFT. Hibernate is suitable for web and enterprise applications, where, usually, a response time of 1 or 10 milliseconds is definitely fast. |