Yup me too! Checkout this state_doc Interface I wrote in Python for building a state machine where the state is stored in S3. I never bothered to solve for the edge case of inconsistent reads because my little state machine only ever measured in hours when it slept waiting for work and then minutes in-between waking up and doing work to verify restores.

With the news of S3's strong consistency my program is immediately safer to use for some set of defects, since the underlying datastore properties, S3 has made my codes naive/invalid assumptions, true.

https://github.com/remind101/dbsnap/blob/master/dbsnap_verif...

I should likely pull out the StateDoc class into it's own module.