Anyone who has used Reddit for any period of time (or basically any similar site, which includes FB, Twitter, and even HN), has seen data consistency issues during high load (like periods of activism). Shards die or fall out of quorum, work queues get purged, etc. That's the reality of systems with a lot of very low value data.
Eventually consistent, but also perpetually inconsistent.
Anyone who has used Reddit for any period of time (or basically any similar site, which includes FB, Twitter, and even HN), has seen data consistency issues during high load (like periods of activism). Shards die or fall out of quorum, work queues get purged, etc. That's the reality of systems with a lot of very low value data.
Eventually consistent, but also perpetually inconsistent.