What Is an Architecture Decision Record (ADR)? A Practical Guide
An ADR is a short document capturing one architectural decision, its context and its consequences. Here is the format, when to write one, and what makes them fail.
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Jishu Labs
CTO
January 20, 2026
13 min read
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3 articles tagged “documentation”
Clear tag filterAn ADR is a short document capturing one architectural decision, its context and its consequences. Here is the format, when to write one, and what makes them fail.
Onboarding used to mean finding the person who wrote it. In a codebase where much of the code was generated, that person may not exist. A practical approach to ramping engineers into code with no author.
An entity-relationship diagram shows what things exist in a system and how they relate. Its real value is not documentation - it is that cardinality forces questions nobody asks until the data is wrong.
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