This week, saving $1.2M by leaving AWS for bare metal, why Postgres replaces Kafka more often than you think, and a cautionary startup infrastructure tale. Plus, AI debugging and SQLite concurrency.

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Architecture Notes

A curated collection of engineering articles covering infrastructure cost optimization through bare metal migration (saving $1.2M annually), using Postgres as an alternative to Kafka for pub/sub and queueing, startup architecture mistakes with AWS Amplify and serverless, SQLite concurrency challenges in Jellyfin, AI-assisted debugging with Claude Code for cryptography bugs, and career advice on handling silent disagreements in engineering teams.

Arc Notes Weekly #102: Primetime