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Links for 2022-09-05

  • don’t use JVM Flight Recorder profiling

    Solid tip from Nitsan Wakart on Twitter:

    If you are profiling for a CPU bottleneck [in java], DO NOT RELY ON JVM FLIGHT RECORDER METHOD PROFILING. Not even a little bit. Use `async-profiler` for profiling(`-e cpu,lock,alloc`), with `–jfrsync default/profile` for extra JVM/JDK events.

    (tags: profiling java performance optimization jvm async-profiler via:twitter)

  • The Ice-Cold Alchemy of Beer Slushies – Imbibe Magazine

    I had no idea that the beer slushy had been so perfected in Japan:

    In March 2012, Kirin pushed beer even closer to Arctic climes with the Ichiban Shibori Frozen Draft: a draft beer topped with a multi-inch-thick angelic swirl of marshmallow fluff-like frozen foam. At that time, ice-cold beer was booming in Japan, says Tsuneo Mitsudomi, president of Kirin Brewery of America, and Kirin sought its own take on the trend that also served a practical purpose. Inspired by a frozen smoothie machine found in Italy, Kirin lab techs developed technology capable of whipping up beer—yes, 100 percent beer—into a froyo-like state. “We focused on the function which can keep beer cold, and magical looks,” Mitsudomi says. Kirin spent roughly five years perfecting the texture and temperature (23 degrees Fahrenheit) of its frozen foam. An unorthodox lid, the layer of frozen foam not only prevents carbonation from quickly escaping, but also insulates the glass for 30 minutes, more time than it takes to polish off the average pint.
    Also “jelly beer”, excellent tech from Thailand:
    At Uncle Boons, the beer slushy takes the form of bia wun, or jelly beer. Unlike other beer slushies, jelly beer is shaped and served in the bottle. A motorized barrel sourced from Thailand is filled with ice, water and salt, the bottles placed within. The whole apparatus gently rocks back and forth with the enthusiasm of a small dingy to agitate its contents. The salted water drops to 27 degrees, while the pressure inside the bottle keeps the beer from freezing over and exploding. Once the beer is removed from the barrel, the bottle is given a shake, then a sharp tap, and ice crystals begin to form within. As the cap is removed, the beer starts to froth and foam, freezing over in a molecular equation most often described as magic.

    (tags: beer bia-wun jelly-beer slushies drinks cocktails beer-slushies thailand japan kirin beer-ice-cream)

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