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Module 4 · Memory + profiling · Recap
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Documentation: ADRs for irreversible decisions
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📝 **Question:** What decision is worth an ADR? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
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📝 **Question:** What decision is worth an ADR? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
A
Every PR — an ADR per commit gives future engineers a chronological log of every tiny choice made.
B
Anything expensive to reverse: database choice, language, message broker, auth strategy, monorepo vs polyrepo.
C
Only the founding stack — once shipped, the original ADRs cover everything downstream by transitive inheritance.
D
Refactor decisions only — new features are self-documenting through their PR descriptions and JIRA tickets.
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