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document-haness/docs/clean-architecture-backend-template/final/evidence/rendered/messaging-observability-c04.svg
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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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<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="1822" viewBox="0 0 1200 1822" 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="1820" 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"/>
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<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">$ grep -rn &quot;MessagingTags&quot; --include=*.java messaging/messaging-observability</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/codebase/clean-architecture-backend-template/src</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: 2026-09-01T05:36:49+00:00 · exit 0</tspan></text>
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<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">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingMetricCardinalityTest.java:18: pr</tspan><tspan x="24" dy="22">ivate static MessagingTags tagsFor(String destination) {</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">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingMetricCardinalityTest.java:19: </tspan><tspan x="24" dy="22">return MessagingTags.of(&quot;kafka&quot;, destination, &quot;publish&quot;, &quot;confirmed&quot;);</tspan></text>
<text x="24" y="254" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingMetricCardinalityTest.java:55: </tspan><tspan x="24" dy="22">MessagingTags tags = MessagingTags.of(&quot;kafka&quot;, &quot;orders.v1&quot;, &quot;consume&quot;, &quot;handled&quot;);</tspan></text>
<text x="24" y="298" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingMetricCardinalityTest.java:93: </tspan><tspan x="24" dy="22">MessagingTags tags = MessagingTags.of(&quot;kafka&quot;, &quot;orders.v1&quot;, &quot;consume&quot;, &quot;lag&quot;);</tspan></text>
<text x="24" y="342" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingMetricCardinalityTest.java:104: </tspan><tspan x="24" dy="22"> MessagingTags tags = MessagingTags.of(&quot;kafka&quot;, &quot;orders.v1&quot;, &quot;consume&quot;, &quot;handled&quot;);</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">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingSecretLeakTest.java:77: Mes</tspan><tspan x="24" dy="22">sagingTags.of(&quot;kafka&quot;, &quot;orders.v1&quot;, &quot;publish&quot;, &quot;rejected&quot;),</tspan></text>
<text x="24" y="430" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingSecretLeakTest.java:106: Messag</tspan><tspan x="24" dy="22">ingTags tags = MessagingTags.of(&quot;kafka&quot;, &quot;orders.v1&quot;, &quot;publish&quot;, &quot;rejected&quot;);</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">messaging/messaging-observability/src/test/java/dev/caskeleton/messaging/observation/MessagingRedactorTest.java:70: Messaging</tspan><tspan x="24" dy="22">Tags tags = MessagingTags.of(&quot;kafka-primary&quot;, &quot;order-events&quot;, &quot;publish&quot;, &quot;CONFIRMED&quot;);</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">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:71: public void reco</tspan><tspan x="24" dy="22">rdPublish(MessagingTags tags, Duration elapsed) {</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">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:78: public void reco</tspan><tspan x="24" dy="22">rdDelivery(MessagingTags tags, Duration elapsed, int attempt) {</tspan></text>
<text x="24" y="606" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:96: public void reco</tspan><tspan x="24" dy="22">rdSettlement(MessagingTags tags) {</tspan></text>
<text x="24" y="650" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:103: public void rec</tspan><tspan x="24" dy="22">ordBacklog(MessagingTags tags, long messages) {</tspan></text>
<text x="24" y="694" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:116: public void rec</tspan><tspan x="24" dy="22">ordDiagnostics(MessagingTags tags, Map&lt;String, String&gt; diagnostics) {</tspan></text>
<text x="24" y="738" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingMetrics.java:158: private java.ut</tspan><tspan x="24" dy="22">il.Optional&lt;Tags&gt; admitted(MessagingTags tags) {</tspan></text>
<text x="24" y="782" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/CardinalityGuard.java:78: public boolean a</tspan><tspan x="24" dy="22">dmit(MessagingTags tags) {</tspan></text>
<text x="24" y="826" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingObservation.java:21: void recordP</tspan><tspan x="24" dy="22">ublish(MessagingTags tags, Duration elapsed);</tspan></text>
<text x="24" y="870" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingObservation.java:30: void recordD</tspan><tspan x="24" dy="22">elivery(MessagingTags tags, Duration elapsed, int attempt);</tspan></text>
<text x="24" y="914" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingObservation.java:37: void recordS</tspan><tspan x="24" dy="22">ettlement(MessagingTags tags);</tspan></text>
<text x="24" y="958" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingObservation.java:45: void recordB</tspan><tspan x="24" dy="22">acklog(MessagingTags tags, long messages);</tspan></text>
<text x="24" y="1002" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingObservation.java:55: void recordD</tspan><tspan x="24" dy="22">iagnostics(MessagingTags tags, Map&lt;String, String&gt; diagnostics);</tspan></text>
<text x="24" y="1046" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">43: public MessagingTags publish(</tspan></text>
<text x="24" y="1090" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">50: return new MessagingTags(</tspan></text>
<text x="24" y="1134" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">55: failure.map(category -&gt; lower(category.name())).orElse(MessagingTags.NONE),</tspan></text>
<text x="24" y="1178" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">56: MessagingTags.NONE);</tspan></text>
<text x="24" y="1222" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">65: * @param retryStage the retry stage, or {@link MessagingTags#NONE} on the first attempt</tspan></text>
<text x="24" y="1266" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">69: public MessagingTags consume(</tspan></text>
<text x="24" y="1310" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">78: return new MessagingTags(</tspan></text>
<text x="24" y="1354" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">83: failure.map(category -&gt; lower(category.name())).orElse(MessagingTags.NONE),</tspan></text>
<text x="24" y="1398" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">95: public MessagingTags settlement(String broker, String destinationProfile, String outcome) {</tspan></text>
<text x="24" y="1442" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">96: return MessagingTags.of(broker, destinationProfile, SETTLE, lower(outcome));</tspan></text>
<text x="24" y="1486" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">108: public MessagingTags deadLetter(</tspan></text>
<text x="24" y="1530" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">111: return new MessagingTags(</tspan></text>
<text x="24" y="1574" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/DefaultMessagingObservationConvention.java:</tspan><tspan x="24" dy="22">117: MessagingTags.NONE);</tspan></text>
<text x="24" y="1618" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingTags.java:22:public record Messagi</tspan><tspan x="24" dy="22">ngTags(</tspan></text>
<text x="24" y="1662" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingTags.java:33: public MessagingTag</tspan><tspan x="24" dy="22">s {</tspan></text>
<text x="24" y="1706" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingTags.java:51: public static Messa</tspan><tspan x="24" dy="22">gingTags of(</tspan></text>
<text x="24" y="1750" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">messaging/messaging-observability/src/main/java/dev/caskeleton/messaging/observation/MessagingTags.java:53: return new Messag</tspan><tspan x="24" dy="22">ingTags(broker, destinationProfile, operation, outcome, NONE, NONE);</tspan></text>
</svg>
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