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docs(keycloak-session-store): import the session-storage lab as a new project

Browse Source 
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>
This commit is contained in:
DongHyeonka
2026-09-04 22:51:59 +09:00
co-authored by Claude Opus 5
parent 43bccd08a8
commit b2963105a8
5017 changed files with 372751 additions and 4943 deletions
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docs/clean-architecture-backend-template/final/evidence/rendered/messaging-runtime-core-f03.svg
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<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="678" viewBox="0 0 1200 678" role="img">
<title>terminal evidence</title>
<desc>Terminal-style rendering generated from retained command output. Sensitive-looking values are redacted in the visual asset.</desc>
<rect x="1" y="1" width="1198" height="676" rx="14" fill="#0d1117" stroke="#30363d"/>
<rect x="1" y="1" width="1198" height="44" rx="14" fill="#161b22"/>
<rect x="1" y="30" width="1198" height="14" fill="#161b22"/>
<circle cx="24" cy="22" r="6" fill="#ff5f57"/>
<circle cx="44" cy="22" r="6" fill="#febc2e"/>
<circle cx="64" cy="22" r="6" fill="#28c840"/>
<text x="92" y="27" fill="#8b949e" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace">terminal evidence</text>
<text x="24" y="68" fill="#c9d1d9" font-size="15" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">$ sed -n &#x27;727,741p&#x27; analysis/messaging/messaging-runtime-core.md</tspan></text>
<text x="24" y="90" fill="#8b949e" font-size="13" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">cwd: /shared/document-detail/clean-architecture-backend-template</tspan></text>
<text x="24" y="112" fill="#8b949e" font-size="13" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">time: 2026-09-01T05:42:34+00:00 · exit 0</tspan></text>
<line x1="24" y1="126" x2="1176" y2="126" stroke="#30363d"/>
<text x="24" y="166" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">### P3 — 선언된 content type과 실제 인코딩이 조용히 갈라질 수 있다</tspan></text>
<text x="24" y="188" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="210" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **사실.** `encode`가 `codecs.find(message.contentType()).orElseGet(codecs::defaultCodec)`으로 폴백한다. 출하 registry에는 JSON</tspan><tspan x="24" dy="22"> codec 하나만 등록된다. 봉투가 `application/avro`를 선언해도 JSON으로 인코딩되고, `EncodedMessage`의 content type은 codec이 정하</tspan><tspan x="24" dy="22">므로 `application/json`이 된다.</tspan></text>
<text x="24" y="276" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **근거.** `DefaultMessagePublisher.java:97-102`, `RegisteredMessageCodecs.find`, `MessagingCoreAutoConfiguration:363`(varargs </tspan><tspan x="24" dy="22">비어 있음).</tspan></text>
<text x="24" y="320" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **왜 문제인가.** 실패하지 않고 **다른 포맷으로 성공**한다. 소비 측이 봉투의 원래 선언을 믿고 디코더를 고르면 어긋난다. `Destin</tspan><tspan x="24" dy="22">ationProfile.schema().codec()`이 목적지의 codec을 선언하는데 그 값과 대조하는 코드가 이 경로에 없다.</tspan></text>
<text x="24" y="364" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **확인 방법.** 등록되지 않은 content type의 봉투를 발행해 `EncodedMessage.contentType()`을 확인.</tspan></text>
<text x="24" y="386" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **후보.** 미등록 content type을 `MessagingConfigurationException`으로 거절하거나, `profile.schema().codec()`과 대조한다.</tspan></text>
<text x="24" y="408" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **다음 단계.** **CASE 후보.** 조용한 성공이라는 형태가 `messaging-core-api`의 &quot;조용한 성능 저하 금지&quot; 설계와 정면으로 어긋난다</tspan><tspan x="24" dy="22">.</tspan></text>
<text x="24" y="452" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="474" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">### P3 — 같은 실패 코드가 두 completion에 쓰인다</tspan></text>
<text x="24" y="496" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="518" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **사실.** `PUBLISH_DEADLINE_EXCEEDED`가 전송 전이면 `REJECTED`(`:16-21`), 전송 후면 `AMBIGUOUS`(`:42-47`)로 붙는다.</tspan></text>
<text x="24" y="540" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **근거.** 두 위치.</tspan></text>
<text x="24" y="562" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **왜 문제인가.** 두 경우의 운영자 행동이 정반대다 — 전자는 버려도 안전, 후자는 같은 `messageId`로만 재발행. `FailureDescripto</tspan><tspan x="24" dy="22">r.code`가 &quot;stable, machine-readable code&quot;이고 대시보드가 그것으로 집계하는데, 이 코드는 completion을 함께 보지 않으면 판단을 뒤</tspan><tspan x="24" dy="22">집는다.</tspan></text>
<text x="24" y="628" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">- **확인 방법.** `git grep -n &#x27;PUBLISH_DEADLINE_EXCEEDED&#x27; -- src/messaging/messaging-runtime-core`</tspan></text>
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