I am sure your use case was incredibly specific. For insane performance requirements plus enterprise software that is not greenfield, basically everything is C++.
No trolling. Have you ever seen the high-frequency Java stuff from Peter Lawrey's Higher Frequency Ltd.? It is insanely fast. Also, LMAX Disruptor (Java) data structure (ring buffer) is also legendary. I have seen it ported to C++. That said, you can beat all of this with C++, given enough time and resources!
No trolling. Have you ever seen the high-frequency Java stuff from Peter Lawrey's Higher Frequency Ltd.? It is insanely fast. Also, LMAX Disruptor (Java) data structure (ring buffer) is also legendary. I have seen it ported to C++. That said, you can beat all of this with C++, given enough time and resources!