# Systems
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Code Review: Strata & branchfs — What I Found
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The Serverless Sandbox Landscape: From ptrace to Dandelion
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AI-Driven Game Design: From Protocol Spec to Leaderboard in One Shot
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Building a production-grade code judging platform: Botzone Neo technical postmortem
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WASM vs seccomp: Benchmarking Sandbox Startup for a Code Grader
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Shimmy WASM: When the Security Model Has No Syscalls
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Building a Userspace Sandbox for Student Code: 3 Hours of Red-Teaming
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Sandlock v1.4: From Single File to Full-Stack Sandbox
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Sandlock: A Rootless Linux Sandbox in 705 Lines of C
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Why the OJ Leaderboard Froze — and How Redis Sorted Sets Fixed It
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Refactoring a Production OJ: From Tech Debt to Clean Architecture
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Rebuilding an Online Judge from Scratch: A Full-Stack Refactor Story
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From a Hand-Rolled Queue to Bull: Redesigning the Judge Pipeline
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JWT vs Session: Why We Replaced the Entire Auth System
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29 Bugs From One Code Review: What a Zero-Test NestJS OJ Taught Me
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Sandboxing Student Code in Serverless: A Threat Model