Many modern GC languages and runtimes have benefited greatly from improved escape analysis, which identifies memory allocations that have short, identifiable li

Many modern GC languages and runtimes have benefited greatly from improved escape analysis, which identifies memory allocations that have short, identifiable lifetimes, and removes those from the GC-managed heap entirely. Of course, many GCs have indeed gotten better in their own right, but not using the GC at all remains the most potent optimization.