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j-vogel

HN member
Joined
Fri, Mar 13, 2026, 7:17 PM UTC
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6 items

About j-vogel

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Recent public activity

  1. comment
    Comment #47459737

    Good catches from several of you. The original fix dropped the try-catch entirely which was a regression for overflow and edge cases like a bare "-". Updated the post to keep a try…

  2. comment
    Comment #47456094

    Author here. DB and external service calls are often the biggest wins, thanks for calling that out. In my demo app, the CPU hotspots were entirely in application code, not I/O wait…

  3. comment
    Comment #47456020

    Author here. Great callout. That's the -XX:+OmitStackTraceInFastThrow optimization, been around since JDK 5. The C2 compiler detects exceptions thrown repeatedly from the same site…

  4. comment
    Comment #47455232

    Fair point on ecosystem decisions, that's basically the thesis of the post. These patterns aren't Java being slow, they're developers (myself included) writing code that looks fine…

  5. comment
    Comment #47455221

    I'm a fan of Rust too. But there are millions of Java applications running in production right now, and some of them are running these anti-patterns today. Not everyone has the opt…

  6. story