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"Transactions: myths, surprises and opportunities" by Martin Kleppmann

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Further reading 1

Can one record tell you both now and then? →Two reads disagree. First ask which moment each value describes, then who can change it. Keeping history and coordinating writes solve different problems.This video helps answer · How can a backup lose money using only committed reads?

Caption notes

In Kleppmann’s transfer example a backup reads only committed values yet appears to lose a hundred dollars. Its two account reads straddle the transfer, so the pair describes no single instant.

Video or transcript source ↗
Original passages · 2
you've seen different parts of the database at different points in time
"Transactions: myths, surprises and opportunities" by Martin Kleppmann · ▶ 16:34–16:42
you only read the data once it's been committed
"Transactions: myths, surprises and opportunities" by Martin Kleppmann · ▶ 13:40–13:45

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