1.3 KiB
1.3 KiB
ADR Format
ADRs live in docs/adr/ and use sequential numbering: 0001-slug.md, 0002-slug.md, etc.
Create the docs/adr/ directory lazily — only when the first ADR is needed.
Template
# {Short title of the decision}
{1-3 sentences: what's the context, what did we decide, and why.}
That's it. An ADR can be a single paragraph. The value is in recording that a decision was made and why — not in filling out sections.
Optional sections
Only include these when they add genuine value. Most ADRs won't need them.
- Status frontmatter (
proposed | accepted | deprecated | superseded by ADR-NNNN) — useful when decisions are revisited - Considered Options — only when the rejected alternatives are worth remembering
- Consequences — only when non-obvious downstream effects need to be called out
Numbering
Scan docs/adr/ for the highest existing number and increment by one.
When to offer an ADR
All three of these must be true:
- Hard to reverse — the cost of changing your mind later is meaningful
- Surprising without context — a future reader will look at the code and wonder "why on earth did they do it this way?"
- The result of a real trade-off — there were genuine alternatives and you picked one for specific reasons