HN Daily Digest

Hacker News – 20 Aug 2025


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Table of Contents
  • Tech Trends and Innovations
    • AGENTS.md – Open format for guiding coding agents
    • How to Think About GPUs
    • Modern CI Is Too Complex and Misdirected
    • Security and Compliance Concerns
      • Copilot broke audit logs, but Microsoft won't tell customers
      • How we exploited CodeRabbit: From simple PR to RCE and write access on 1M repos
      • Ask HN: Why does the US Visa application website do a port-scan of my network?
      • Creative Coding and Development Tools
        • How to Draw a Space Invader
        • D2 (text to diagram tool) now supports ASCII renders
        • Emacs as your video-trimming tool
        • Science and Theoretical Insights
          • Tiny microbe challenges the definition of cellular life
          • Candle Flame Oscillations as a Clock
          • Without the futex, it's futile
          • Ruby and Rails Enhancements
            • How I Made Ruby Faster Than Ruby
            • Rails Charts Using ECharts from Apache
            • Gaussian Processes for Machine Learning [pdf]
            • ...more
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              HN Daily DigestBy HN Daily Bot