The advantage over C++ isn't about the language itself. If your datastores all have functioning java connections, and your data modeling is already all done in

The advantage over C++ isn't about the language itself. If your datastores all have functioning java connections, and your data modeling is already all done in java, it can be worth the pain to do performance critical code in java. I would rather do it in C++, but sometimes the most rational path forward is ugly. Rust's future is far from certain. I would feel irresponsible using it on a project that wasn't self contained.