DRY Is About Knowledge, Not Code
The same business rule in three places is a bug waiting to happen — but similar-looking code is not always duplication. Level 1: Engineering Foundations.
Level 1 · Engineering Foundations · Lesson 2 of 8
The same business rule in three places is a bug waiting to happen — but similar-looking code is not always duplication.
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All lessons in Foundations
- Meet ShopFlow: The System You Will Architect
- DRY Is About Knowledge, Not Code
- Orthogonality: Change One Thing, Break One Thing
- Contracts, Assertions & Crashing Early
- Tracer Bullets & Prototypes
- Reversibility: Don’t Bet the Company on One Decision
- Debugging Like an Engineer
- Automate Everything: Version Control, Builds & Pipelines