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A comment on Aurora I/O optimized config saved 90% DB cost. Parent comment

Re:Aurora I/O optimized config saved 90% DB cost by twoodfin on Thursday August 10, 2023 @05:12PM (#37081866)
It’s presumably expensive because there’s a lot less inter-AZ bandwidth than there is intra-AZ bandwidth for the obvious reasons.
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Re:Aurora I/O optimized config saved 90% DB cost by Szpadel on Friday August 11, 2023 @09:15AM (#37088337)
But if that's the case, this could be the reason of egress cost. I mean egress cannot be cheaper for aws than cross az. So if we assume that this is just expensive then we should assume the same for egress
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