Observed arrival · 2026-09-14
Buildopsy — System Design Postmortems, Priced.
An independent engineering publication that reconstructs production architectures, models their costs, and pairs its writing with browser-based calculators.
Field notes
Buildopsy combines editorial postmortems with interactive engineering instruments. Its listed subjects range from token limits and context rot to WebSocket conflict resolution, cell-based control planes, and a block-database CDC pipeline. The homepage reports 30+ teardowns and nine calculators, including tools for token billing, error budgets, and HPA sizing. It also maintains a layoff tracker organized by country and reporting window, extending the site beyond architecture commentary into a small operational dashboard.
Observed signals
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Editorial observations of this landing page, not a rating.
One card from the complete issue