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document-haness/docs/clean-architecture-backend-template/tech-log-studio/state-machines-and-ownership/concept/concept-messaging-schema-api-c01.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

2.4 KiB

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-schema-api-c01 codec은 닫힌 registry에 대해서만 동작한다 state-machines-and-ownership clean-architecture-backend-template 게시 전 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 concept:messaging-schema-api-c01 2026-09-01
key file
messaging-schema-api-c01 ../../../final/evidence/rendered/messaging-schema-api-c01.svg
key file
messaging-schema-api-c01-diagram ../../../final/assets/diagrams/messaging-schema-api-c01.svg
../../../final/evidence/raw/messaging-schema-api-c01.txt
원본 분석 절은 analysis/messaging/messaging-schema-api.md#L62 이다.
messaging-schema-api

codec은 닫힌 registry에 대해서만 동작한다

이 leaf는 "바이트를 어떻게 만들고 읽는가"의 계약을 소유하고 실제 포맷 구현은 갖지 않는다.

관계

  • port 계약은 동시성 요구를 적는다 같은 분석 리프에서 끌어낸 규칙이다.
  • 도달성 판정은 단어가 아니라 import로 확인한다 같은 분석 리프에서 끌어낸 규칙이다.

본문

이 leaf는 "바이트를 어떻게 만들고 읽는가"의 계약을 소유한다. 실제 포맷 구현은 갖지 않는다 — 단 하나의 예외가 RawBytesMessageCodec이고, 그것은 포맷이 아니라 포맷의 부재를 구현한다.

계약과 포맷 구현의 소재

:::evidence key="messaging-schema-api-c01-diagram" alt="리프 경계 안에 codec 계약과 닫힌 registry 가 들어 있고 포맷별 벤더가 경계 밖 점선 상자로 놓인 구조" caption="계약과 포맷 구현의 소재" zoom="false" :::

경계 규칙 하나가 모든 곳에 반복된다 — codec은 닫힌 registry에 대해서만 동작한다.

RawBytesMessageCodec 참조 위치

:::evidence key="messaging-schema-api-c01" alt="코드베이스에서 RawBytesMessageCodec 를 검색한 출력 6줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="RawBytesMessageCodec 코드베이스 검색 — 6줄 · exit 0" zoom="true" :::

벤더 의존이 없다

build.gradleapi project(':messaging:messaging-core-api') 하나뿐이고 vendor 의존성이 없다. 포맷별 vendor(jackson, avro, protobuf)는 각자 leaf가 갖는다.