I don't think it's the cable length: 0.5ms is 150km in fiber or about 100km in copper. Cable length is important in HFT where you are measuring fractions of micro seconds.
It's really quite amazing to me that HFT reduces RPC latency by about three orders of magnitude, I feel like there are lessons from there that are not being transferred to the tech world.
It's really quite amazing to me that HFT reduces RPC latency by about three orders of magnitude, I feel like there are lessons from there that are not being transferred to the tech world.