Viewing profile — Ayyyyyron

I agree with your claim, a recipient can cope with at-least-once delivery by being idempotent. You're right. The meaningful distinction is that something on the recipient needs to …

Yes, but the handoff can fail in the same way (it can't know if the thing it's handing off to actually got it). But the application can also just be resilient to that with idempote…

But the recipient is not one atomic thing - we're assuming perfect communication between the process/driver/hardware receiving the packets and doing the duplicate detection and the…

The principal difference between 'at most once' and 'at least once' is whether a sender re-tries when it is unsure if the recipient has received the message. If the recipient's ack…