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
2.1 KiB
Markdown
52 lines
2.1 KiB
Markdown
---
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kind: CONCEPT
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slug: messaging-transport-spi-c06
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title: 두 자료구조가 다른 방식으로 보호되고 주석이 없다
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topic: state-machines-and-ownership
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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-transport-spi-c06
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: messaging-transport-spi-c06
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file: ../../../final/evidence/rendered/messaging-transport-spi-c06.svg
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evidence:
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- ../../../final/evidence/raw/messaging-transport-spi-c06.txt
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source:
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- 원본 분석 절은 analysis/messaging/messaging-transport-spi.md#L352 이다.
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module: messaging-transport-spi
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---
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# 두 자료구조가 다른 방식으로 보호되고 주석이 없다
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이 leaf는 messaging family에서 동시성 밀도가 가장 높다. `current`는 lock-free로, `draining`은 `synchronized`로 다룬다.
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## 관계
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- **멱등 종료를 보장하는 컴포넌트는 종료 이후의 등록도 정의한다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **같은 개념의 sentinel은 계층을 넘어 하나로 정한다**
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같은 분석 리프에서 끌어낸 규칙이다.
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## 본문
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<!-- body:start -->
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이 leaf는 messaging family에서 **동시성 밀도가 가장 높다.**
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## DefaultMessagingRuntimeRegistry 참조 위치
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:::evidence key="messaging-transport-spi-c06" alt="코드베이스에서 DefaultMessagingRuntimeRegistry 를 검색한 출력 25줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="DefaultMessagingRuntimeRegistry 코드베이스 검색 — 25줄 · exit 0" zoom="true"
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:::
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## 두 자료구조가 다른 방식으로 보호된다
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**주목할 비대칭:** `DefaultMessagingRuntimeRegistry`가 `current`는 lock-free(`ConcurrentHashMap`)로, `draining`은 `synchronized ArrayList`로 다룬다. `draining`은 회전 때만 접근하므로 경합이 없다 — 합리적 선택이지만 주석이 없다.
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## 선언된 것과 실현된 것
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수명주기는 §4.4의 8단계가 **선언**이고 §12.1이 실현 상태를 다룬다.
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<!-- body:end -->
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