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Redis as ephemeral cache is ok, but nothing extra.

Redis as transactional, distributed and/or durable storage is pretty poor. Their "active active" docs on conflict resolution for example don't fill me with confidence given there is no formalism, just vague examples. But this comes from people who not only not know how do distributed locks, they refuse to learn when issues are pointed out to them: https://martin.kleppmann.com/2016/02/08/how-to-do-distribute...

Every time I find code that claims to do something transactional in Redis which is critical for correctness, not just latency optimization, I get worried.



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