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>
60 lines
2.9 KiB
Markdown
60 lines
2.9 KiB
Markdown
---
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kind: CONCEPT
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slug: messaging-kafka-share-experimental-c05
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title: 조용히 강등하지 않고 던진다
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topic: delivery-and-settlement-models
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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-kafka-share-experimental-c05
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: messaging-kafka-share-experimental-c05
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file: ../../../final/evidence/rendered/messaging-kafka-share-experimental-c05.svg
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evidence:
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- ../../../final/evidence/raw/messaging-kafka-share-experimental-c05.txt
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source:
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- 원본 분석 절은 analysis/messaging/messaging-kafka-share-experimental.md#L244 이다.
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module: messaging-kafka-share-experimental
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---
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# 조용히 강등하지 않고 던진다
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MessagingCapabilityUnavailableException의 javadoc이 이 leaf의 태도와 정확히 일치한다 — "Thrown instead of quietly degrading. Downgrading … ordered delivery to unordered, produces a system that looks healthy right up to the moment the guarantee actually mattered."
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## 관계
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- **허용 의존 목록은 상한이므로 미사용을 잡지 않는다 — 그것을 잡으려면 별도 검사가 필요하다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **leaf의 각 public 클래스는 자기 레인에 테스트를 갖는다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **에러 메시지가 지시하는 설정은 그 설정을 읽는 코드와 함께 존재해야 한다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **구성 오류는 한 예외 타입과 안정 코드로 보고한다**
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같은 분석 리프에서 끌어낸 규칙이다.
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## 본문
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<!-- body:start -->
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실패가 다섯 가지다.
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| 코드 | 예외 | 카테고리 | 조건 |
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|---|---|---|---|
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| `KAFKA_SHARE_DISABLED` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `enabled == false` |
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| (코드 없음) | `IllegalArgumentException` | — | `orderingScope != NONE` |
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| `KAFKA_SHARE_NO_PAUSE` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `pause(...)` |
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| `KAFKA_SHARE_NO_RESUME` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `resume(...)` |
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| (코드 없음) | `IllegalArgumentException` | — | `shareGroup` 공백, `maxDeliveryCount < 1` |
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## MessagingCapabilityUnavailableException 참조 위치
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:::evidence key="messaging-kafka-share-experimental-c05" alt="코드베이스에서 MessagingCapabilityUnavailableException 를 검색한 출력 37줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="MessagingCapabilityUnavailableException 코드베이스 검색 — 37줄 · exit 0" zoom="true"
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:::
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## javadoc 이 이 leaf 의 태도와 일치한다
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"Thrown instead of quietly degrading. Downgrading … ordered delivery to unordered, produces a system that looks healthy right up to the moment the guarantee actually mattered."
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<!-- body:end -->
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