Re:You Cannot Have Exactly-Once Delivery
by fizwhiz on Wednesday March 01, 2023 @02:33PM
(#34987145)
With idempotence, you shift the problem from "deliver X exactly once" to "make it seem like X was delivered exactly once". In most systems, exactly-once is really "effectively exactly once".
[ Parent
| on HN ]
That's my point. You are simply converting the problem to a new form, not actually solving it.
Hey here's a solution to the halting problem – always assume yes, and then figure out the edge cases. How do you do that? Well that's on you, I did my job.
Idempotency - famously complex. No one has ever successfully implemented it, great point.
If you don't think idempotency can be complex then you haven't really worked on serious distributed computing problems.
If you don't think your analogy is a miss then you haven't really read any serious literature.