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Links for 2017-07-05

  • Why did Apple, Amazon, Google stocks crash to the same price today?

    Nasdaq said in a statement that “certain third parties improperly propagated test data that was distributed as part of the normal evening test procedures.” “For July 3, 2017, all production data was completed by 5:16 PM as expected per the early close of the markets,” the statement continued. “Any data messages received post 5:16 PM should be deemed as test data and purged from direct data recipient’s databases. UTP (Unlisted Trading Privileges) is asking all third parties to revert to Nasdaq Official Closing Prices effective at 5:16 PM.”

    (tags: testing fail stock-markets nasdaq test-data test production integration-testing test-in-prod)

  • Exactly-once Support in Apache Kafka – Jay Kreps

    If you’re one of the people who think [exactly-once support is impossible], I’d ask you to take an actual look at what we actually know to be possible and impossible, and what has been built in Kafka, and hopefully come to a more informed opinion. So let’s address this in two parts. First, is exactly-once a theoretical impossibility? Second, how does Kafka support it.

    (tags: exactly-once-delivery distributed kafka distcomp jay-kreps coding broadcast)

  • Letters and Liquor

    These are lovely! (via Ben)

    Letters and Liquor illustrates the history of lettering associated with cocktails. From the 1690s to the 1990s, I’ve selected 52 of the most important drinks in the cocktail canon and rendered their names in period-inspired design. I post a new drink each week with history, photos and recipes. Don’t want to miss a single cocktail? Click here for email updates.

    (tags: cocktails text letters typography graphics history booze)

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