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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