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The tradeoffs you cite aren’t about the CAP theorem. It’s more about RUM conjecture: http://daslab.seas.harvard.edu/rum-conjecture/

Since this is about aborted writes during VACUUM then this is likely also relevant: https://www.cs.cmu.edu/~pavlo/blog/2023/04/the-part-of-postg...

Hard to blame the CAP theorem since this is a problem across an interface layer. If the DB knew about the data it could manage the LSM tree without issue.

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