But Judy as it stays is extensively optimized for relatively common architectures (and performance degradation on 32B cache line systems is not too great). In f

But Judy as it stays is extensively optimized for relatively common architectures (and performance degradation on 32B cache line systems is not too great). In fact most software optimized for caching behavior that I know of is optimized for 64B cache lines. Also even simple hash table greatly benefits from even trivial cache-related optimization, so I would say that while Judy is extensively optimized for particularly common expectation, simple hash tables have to be optimized for every platform also. On the other hand, for most use-cases these optimizations does not matter much, but there are special cases. Python's dictionary is great example (by thew way it is if I remember correctly also optimized for 64B cache lines)