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document-haness/docs/clean-architecture-backend-template/tech-log-studio/delivery-and-settlement-models/concept/concept-messaging-schema-json-c05.md
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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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---
kind: CONCEPT
slug: messaging-schema-json-c05
title: 여섯 갈래 원인이 하나의 코드로 접힌다
topic: delivery-and-settlement-models
project: clean-architecture-backend-template
status: 게시 전
sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
rootTreeNode: concept:messaging-schema-json-c05
evidenceCapturedOn: 2026-09-01
assets:
- key: messaging-schema-json-c05
file: ../../../final/evidence/rendered/messaging-schema-json-c05.svg
evidence:
- ../../../final/evidence/raw/messaging-schema-json-c05.txt
source:
- 원본 분석 절은 analysis/messaging/messaging-schema-json.md#L246 이다.
module: messaging-schema-json
---
# 여섯 갈래 원인이 하나의 코드로 접힌다
전부 retryable = false다 — PERMANENT_BUSINESS와 DESERIALIZATION 카테고리다. 같은 바이트를 다시 디코딩해도 같은 결과이므로 일관적이다.
## 관계
- **실패 코드는 운영자의 다음 행동이 갈리는 지점마다 나눈다**
같은 분석 리프에서 끌어낸 규칙이다.
## 본문
<!-- body:start -->
실패는 전부 `retryable = false`다 — `PERMANENT_BUSINESS``DESERIALIZATION` 카테고리다. 같은 바이트를 다시 디코딩해도 같은 결과이므로 일관적이다.
## 이 기록이 다루는 범위
:::evidence key="messaging-schema-json-c05" alt="코드베이스에서 파일 목록을 만든 출력 1줄. 이 기록이 다루는 범위가 그 목록이다." caption="코드베이스 파일 목록 — 1줄 · exit 0" zoom="true"
:::
## 진단 손실 하나
파서 강화가 잡는 여섯 가지(깊이, 중복 키, trailing token, 미지 필드, 문서 길이, 토큰 길이)가 전부 하나의 코드 `JSON_DECODE_FAILED`로 접힌다. 운영자는 "JSON 디코딩 실패"만 보고 원인 여섯 갈래를 구분할 수 없다.
## 원인은 붙지만 분류에는 남지 않는다
원인 예외가 `cause`로 붙지만 `FailureDescriptor``exceptionType``Optional.empty()`로 둔다(`MessageSerializationException`의 3인자 생성자 경로). §17 참조.
<!-- body:end -->