§ JOURNAL · BUILDING VALUEJournal 019

Decision records are value preservation.

A written architecture decision can outlast a roadmap deck, a staffing plan, and half the code it first described. That durability is why it creates value.

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§ I — COVER

The context behind the article.

Journal 0194 min
VISUAL DIRECTION

A written architecture decision can outlast a roadmap deck, a staffing plan, and half the code it first described. That durability is why it creates value.

BRIEF

A written architecture decision can outlast a roadmap deck, a staffing plan, and half the code it first described. That durability is why it creates value.

WHY IT MATTERS

This entry exists to make the operating logic visible: not just the system we would build, but the constraint, tradeoff, or failure mode that forced the architecture to matter.

§ II — ARTICLE

The text.

Decisions outlast code

Code gets refactored, rewritten, and deleted. Roadmaps change quarterly. Team members leave. But the reasoning behind a well-documented architectural decision remains valuable for years.

The anatomy of a useful ADR

  • Title: A short, descriptive name
  • Context: What situation prompted this decision? What constraints existed?
  • Decision: What was decided, clearly and concisely
  • Alternatives considered: What other options were evaluated? Why were they rejected?
  • Consequences: What are the expected benefits and trade-offs?
  • Status: Proposed, accepted, deprecated, or superseded

Decision records as organizational memory

Individual memory is unreliable and non-transferable. Decision records create organizational memory that survives team changes: new members read the history, incident responders check intent, planners review past decisions to avoid repeating mistakes.

An ADR costs an hour to write and saves weeks of future investigation. The return on investment is among the highest of any engineering practice.

§ III — KEEP READING

Adjacent articles.

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