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Domain-Driven Design · 4 essays · all 25 field notes →

2026.07.27 · 5 min

A Feature Is Not a Service

The ticket said "saved filters". The real decisions were which service, whose identity, and how little to invent.#software-architecture#domain-driven-design
2026.07.20 · 6 min

The Model Is the Easy Part

I put an MCP server in front of a production API. The hard parts were tokens and state, not the model.#software-architecture#artificial-intelligence
2026.03.02 · 5 min

Edge Cases Written by Parliament

What integrating with mandatory government systems taught me about specs you cannot refactor.#software-architecture#government-technology
2026.01.19 · 5 min

The Anti-Corruption Layer Is for People Too

My favorite pattern from Domain-Driven Design protects codebases from foreign models. I keep prescribing it to departments.#domain-driven-design#software-architecture