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It's amusing that they relied on a write followed by an immediate read to see if the updates were immediately consistent since S3 is only eventually consistent even if you're only using one region (with exception of certain utilities like the Import/Export tool) unless I'm missing something?


There's read after write consistency for new objects, eventual consistency for overwriting existing objects.

Historically this applied to all regions except US Standard, but now that too supports it if you go through the VA instead of global endpoint.


That makes sense - in this article it looked like they were using a modification to test the consistency - which should always be eventually consistent though. Maybe I'm misunderstanding though? Regardless, interesting.


Yeah, I was operating under the assumption that it was eventually consistent and just found it curious that it converged way faster than I expected. (until I read the explanation)


That makes sense - thanks for clarifying.




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