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From Yang <teddyyyy...@gmail.com>
Subject at-least-once guarantee?
Date Wed, 07 Aug 2013 23:00:47 GMT
I wonder why at-least-once guarantee is easier to maintain than
exactly-once (in that the latter requires 2PC while the former does not ,
according to

if u achieve at-least-once guarantee, you are able to assert between 2
cases "nothing" vs ">=1 delivered", which can be seen as 2 different
answers 0 and 1. isn't this as hard as the common Byzantine general problem?


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