<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>System Design on Ryan's Blog</title><link>/tags/system-design/</link><description>Recent content in System Design on Ryan's Blog</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Thu, 29 Oct 2026 16:00:00 +0800</lastBuildDate><atom:link href="/tags/system-design/index.xml" rel="self" type="application/rss+xml"/><item><title>大道至简：用 700 行纯 Python 从零手搓 NVIDIA OpenShell 零信任 Agent 沙箱</title><link>/posts/building-nano-openshell-from-scratch/</link><pubDate>Thu, 29 Oct 2026 16:00:00 +0800</pubDate><guid>/posts/building-nano-openshell-from-scratch/</guid><description>深度拆解 NVIDIA OpenShell (v0.1.5) 的 36 个 Rust Crates，剥离生产级工程噪音，仅用 700 行零依赖 Python 标准库代码完整复现进程级 L7 策略引擎、跨命名空间 /proc 套接字溯源、进程外凭证动态代填、断连 SIGSTOP 冻结与静态策略包含性证明器（Prover）。</description></item></channel></rss>