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>
52 lines
2.5 KiB
Markdown
52 lines
2.5 KiB
Markdown
---
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kind: CONCEPT
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slug: messaging-pulsar-experimental-c01
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title: 알 수 없는 실패의 기본값을 모호로 둔다
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topic: result-and-failure-algebra
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project: clean-architecture-backend-template
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status: 게시 전
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sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
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rootTreeNode: concept:messaging-pulsar-experimental-c01
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: messaging-pulsar-experimental-c01
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file: ../../../final/evidence/rendered/messaging-pulsar-experimental-c01.svg
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- key: messaging-pulsar-experimental-c01-diagram
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file: ../../../final/assets/diagrams/messaging-pulsar-experimental-c01.svg
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evidence:
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- ../../../final/evidence/raw/messaging-pulsar-experimental-c01.txt
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source:
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- 원본 분석 절은 analysis/messaging/messaging-pulsar-experimental.md#L50 이다.
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module: messaging-pulsar-experimental
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---
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# 알 수 없는 실패의 기본값을 모호로 둔다
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분류는 타입 있는 신호만 본다. `PulsarPreSendRejection`이면 REJECTED, `TimeoutException`이면 시간 초과, 나머지는 전부 AMBIGUOUS다. javadoc이 이전 구현과 그 결함을 적는다.
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## 본문
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<!-- body:start -->
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javadoc 이 이전 구현과 그 결함을 적는다. 예전에는 예외의 클래스 단순 이름을 읽어서 `"Timeout"`이면 모호, 그 밖이면 거절로 분류했다.
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> "Classification used to read the exception's class simple name: `"Timeout"` meant ambiguous, anything else meant rejected. A class name is not part of Pulsar's contract — it changes between client versions — and defaulting the unknown case to `REJECTED` tells the caller nothing was transmitted, which is how the same entry is published to the bookies twice."
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기본값이 모호로 바뀐 것이 핵심이다. 알 수 없는 실패에서 안전한 방향은 모호다.
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## 분류가 갈라지는 자리
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:::evidence key="messaging-pulsar-experimental-c01-diagram" alt="사전 거절과 그 밖의 실패가 나란히 놓이고 모호가 아래에 놓인 구조" caption="분류의 기본값" zoom="false"
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:::
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## 성공을 영수증이 아니라 복제 증거로 적는다
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확인된 성공은 복제 증거로 기록된다 — 전송 미래가 설정된 수의 저장 노드에 기록된 뒤에야 해소되므로 영수증이 아니라 복제 증거다.
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## 이 기록이 다루는 파일 범위
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:::evidence key="messaging-pulsar-experimental-c01" alt="코드베이스에서 파일 목록을 만든 출력 8줄. 이 기록이 다루는 범위가 그 목록이다." caption="코드베이스 파일 목록 — 8줄 · exit 0" zoom="true"
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:::
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<!-- body:end -->
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