Files
document-haness/docs/clean-architecture-backend-template/tech-log-studio/delivery-and-settlement-models/concept/concept-messaging-schema-json-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

2.6 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-json-c01 크기 초과를 codec에서 잡으면 버려도 안전한 실패가 된다 delivery-and-settlement-models clean-architecture-backend-template 게시 전 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 concept:messaging-schema-json-c01 2026-09-01
key file
messaging-schema-json-c01 ../../../final/evidence/rendered/messaging-schema-json-c01.svg
key file
messaging-schema-json-c01-diagram ../../../final/assets/diagrams/messaging-schema-json-c01.svg
../../../final/evidence/raw/messaging-schema-json-c01.txt
원본 분석 절은 analysis/messaging/messaging-schema-json.md#L46 이다.
messaging-schema-json

크기 초과를 codec에서 잡으면 버려도 안전한 실패가 된다

Stable JSON codec 하나. MessageCodec(schema-api)을 구현하고 Jackson 3(tools.jackson.* 네임스페이스)을 쓴다.

관계

  • 실패 코드는 운영자의 다음 행동이 갈리는 지점마다 나눈다 같은 분석 리프에서 끌어낸 규칙이다.

본문

Stable JSON codec 하나. MessageCodec(schema-api)을 구현하고 Jackson 3(tools.jackson.* 네임스페이스)을 쓴다.

크기 초과를 어디서 잡나

:::evidence key="messaging-schema-json-c01-diagram" alt="크기 초과에서 codec 이 잡으면 REJECTED 이고 브로커가 잡으면 AMBIGUOUS 인 두 갈래가 나온다" caption="크기 초과를 어디서 잡나" zoom="false" :::

javadoc이 "기본 codec으로 노출해도 안전한 이유" 셋을 명시한다. 세 번째가 messaging-core-api의 3상태 발행 결과와 직접 연결된다 — 크기 초과를 브로커가 아니라 여기서 잡으면 NOT_TRANSMITTED 증거가 붙은 REJECTED가 되고, 브로커에서 잡히면 AMBIGUOUS가 된다. 전자는 버려도 안전하고 후자는 아니다.

MessageCodec 참조 위치

:::evidence key="messaging-schema-json-c01" alt="코드베이스에서 MessageCodec 를 검색한 출력 40줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="MessageCodec 코드베이스 검색 — 40줄 · exit 0" zoom="true" :::

이 leaf만 implementation인 이유

Jackson 의존성은 implementation이다 — public 시그니처에 Jackson 타입이 없기 때문이다. 형제 leaf(schema-avro, schema-protobuf, cloudevents)는 vendor 타입이 public 시그니처에 나오므로 api로 선언했고 build.gradle에 그 이유를 주석으로 적었다. src/messaging/CLAUDE.md:40-43의 게이트가 이 구분을 강제한다.