JVM’s ZGC promises sub-millisecond pauses regardless of heap size, so I’m fairly sure it is no longer applicable to say that GC’s are incompatible with this type of workload. Though of course where these things really matter one should also look at the underlying OS and at least pin the process to fixed cores, as the OS scheduler may cause bigger latencies than the GC.

Though for completeness’s sake I will add that in case of the JVM, variable tail latency still can be experienced due to the JIT compiler.