3 ms·

Why not? (Please see the update on my OP before answering that.)

• akira2501 2y ago
  The mechanism you're describing already exists. TCP has sequence numbers. It can drop duplicate data. The difference between "processing" and "delivery" relates to "network capacity." Process handling wastes capacity in favor of latency. Delivery handling increases latency in favor of capacity. Systems which have "exactly once" delivery typically do so with "send/receive" and "release/delete" message pairs. You need additional round trips to actually accomplish this at the "delivery" layer.
  • lisper 2y ago
    > The mechanism you're describing already exists. Yes, I know, which makes it all the more bizarre that people are claiming that this is impossible. > Systems which have "exactly once" delivery typically do so... Ah, so exactly-once delivery is possible after all?
    • akira2501 2y ago
      If your goal is simply to look smart then absorbing the subtlety of what is said to you before you reply should be top of list.
      • lisper 2y ago
        What subtlety do you think I have failed to absorb?