This week, GitLab cuts backups from 48h to 41m, Twitter’s DMs aren’t as secure as they seem, and Stanford’s Tokasaurus boosts LLM speed. Plus, rethink common misconceptions in aviation software.

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Architecture Notes

GitLab dramatically reduced repository backup times from 48 hours to 41 minutes by addressing a 15-year-old Git bottleneck. Twitter's encrypted DMs remain vulnerable despite new encryption features, lacking forward secrecy. Stanford's Tokasaurus LLM inference engine achieves 3x performance improvements through dynamic prefix identification and async tensor parallelism. The newsletter also covers shell history optimization, aviation software misconceptions, DNS fundamentals, and various open-source observability tools.

Arc Notes Weekly #97: Accounting