DongHyeonkaandClaude Opus 5
b2963105a8
The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.
Follows the import procedure in README.md.
source/ the originating repository verbatim — 78 documents, 28 SVGs,
8 manifests, plus .source-revision recording the commit
final/ the SSOT
document.md 729 lines written from the 29 experiment documents, not
concatenated: what was predicted, what was measured, and
where the measurement itself was wrong
evidence/raw 125 outputs, flattened to <experiment>__<file> because
the originals collided (01-baseline.txt appeared three
times) and the audit only globs the top level
evidence/meta one per raw file; command and exitCode are null and the
README says why rather than inventing them
evidence/browser 22 captures
assets/ three diagrams through techviz
.techviz/ their VizSpecs
A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.
Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.
verify-pipeline.py passes. audit-records.py reports no issues.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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kind, slug, title, topic, project, status, sourceRevision, rootTreeNode, evidenceCapturedOn, assets, evidence, source, module
| kind | slug | title | topic | project | status | sourceRevision | rootTreeNode | evidenceCapturedOn | assets | evidence | source | module | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CONCEPT | messaging-reliability-api-c05 | 실패를 예외가 아니라 상태와 반환값으로 표현한다 | state-machines-and-ownership | clean-architecture-backend-template | 게시 전 | 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 | concept:messaging-reliability-api-c05 | 2026-09-01 |
|
|
|
messaging-reliability-api |
실패를 예외가 아니라 상태와 반환값으로 표현한다
이 leaf는 MessagingException을 하나도 던지지 않는다. IllegalArgumentException을 던지는 곳은 record 생성자 여섯뿐이다.
관계
- 계약만 담는 leaf도 계약의 거절 조건은 자기 레인에서 검증한다 같은 분석 리프에서 끌어낸 규칙이다.
- record의
equals를 좁히면 이유를 적는다 같은 분석 리프에서 끌어낸 규칙이다. - 호출 컨텍스트가 계약이면 그 컨텍스트를 검증할 수단을 함께 정한다 같은 분석 리프에서 끌어낸 규칙이다.
본문
이 leaf는 MessagingException을 하나도 던지지 않는다. 실패를 상태와 반환값으로 표현한다. IllegalArgumentException을 던지는 곳은 record 생성자 여섯이다 — 전부 호출자의 프로그래밍 오류다.
MessagingException 참조 위치
:::evidence key="messaging-reliability-api-c05" alt="코드베이스에서 MessagingException 를 검색한 출력 36줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="MessagingException 코드베이스 검색 — 36줄 · exit 0" zoom="true" :::
예외가 롤백 신호인 자리
TransactionalMessageAction.apply가 throws Exception이다 — javadoc: "rolling back both it and the inbox reservation". 즉 예외가 롤백 신호이고, 그 처리는 구현 leaf가 소유한다.