alt Hacker NewsGC in Java is the best in world with a lot options and knobs that allows to tune to particular application requirements. Still some trading platforms using it disable GC and just ensure enough memory is available so memory leaks during the trading hours would not matter before the application will be restarted.
Just like plenty of C and C++ deployment scenarios have special purpose memory allocators, or forbid memory allocations other than at startup.
Yet one still needs to account with processes like MISRA to account for safety.