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document-haness/docs/clean-architecture-backend-template/tech-log-studio/delivery-and-settlement-models/concept/concept-messaging-kafka-share-experimental-c05.md
T
DongHyeonkaandClaude Opus 5 b2963105a8 docs(keycloak-session-store): import the session-storage lab as a new project
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>
2026-09-04 22:51:59 +09:00

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2.9 KiB
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---
kind: CONCEPT
slug: messaging-kafka-share-experimental-c05
title: 조용히 강등하지 않고 던진다
topic: delivery-and-settlement-models
project: clean-architecture-backend-template
status: 게시 전
sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
rootTreeNode: concept:messaging-kafka-share-experimental-c05
evidenceCapturedOn: 2026-09-01
assets:
- key: messaging-kafka-share-experimental-c05
file: ../../../final/evidence/rendered/messaging-kafka-share-experimental-c05.svg
evidence:
- ../../../final/evidence/raw/messaging-kafka-share-experimental-c05.txt
source:
- 원본 분석 절은 analysis/messaging/messaging-kafka-share-experimental.md#L244 이다.
module: messaging-kafka-share-experimental
---
# 조용히 강등하지 않고 던진다
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."
## 관계
- **허용 의존 목록은 상한이므로 미사용을 잡지 않는다 — 그것을 잡으려면 별도 검사가 필요하다**
같은 분석 리프에서 끌어낸 규칙이다.
- **leaf의 각 public 클래스는 자기 레인에 테스트를 갖는다**
같은 분석 리프에서 끌어낸 규칙이다.
- **에러 메시지가 지시하는 설정은 그 설정을 읽는 코드와 함께 존재해야 한다**
같은 분석 리프에서 끌어낸 규칙이다.
- **구성 오류는 한 예외 타입과 안정 코드로 보고한다**
같은 분석 리프에서 끌어낸 규칙이다.
## 본문
<!-- body:start -->
실패가 다섯 가지다.
| 코드 | 예외 | 카테고리 | 조건 |
|---|---|---|---|
| `KAFKA_SHARE_DISABLED` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `enabled == false` |
| (코드 없음) | `IllegalArgumentException` | — | `orderingScope != NONE` |
| `KAFKA_SHARE_NO_PAUSE` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `pause(...)` |
| `KAFKA_SHARE_NO_RESUME` | `MessagingCapabilityUnavailableException` | `CONFIGURATION` | `resume(...)` |
| (코드 없음) | `IllegalArgumentException` | — | `shareGroup` 공백, `maxDeliveryCount < 1` |
## MessagingCapabilityUnavailableException 참조 위치
:::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"
:::
## javadoc 이 이 leaf 의 태도와 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."
<!-- body:end -->