Hi,
while I don't currently use rgw, I still am curious about consistency
guarantees.
Usually, S3 has strong read-after-write consistency guarantees (for
requests that do not overlap). According to
https://docs.ceph.com/en/latest/dev/radosgw/bucket_index/
in Ceph this is also true for per-object ACLs.
Is there also a strong consistency guarantee for (bucket) policies? The
documentation at
https://docs.ceph.com/en/latest/radosgw/bucketpolicy/
apparently does not say anything about this.
How would multiple rgw instances synchronize a policy change? Is this
effective immediate with strong consistency or is there some propagation
delay (hopefully on with some upper bound)?
Best regards
Matthias
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