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document-haness/docs/clean-architecture-backend-template/final/evidence/rendered/grpc-policy-f01.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="1074" viewBox="0 0 1200 1074" 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="1072" 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">$ grep -rn &quot;GrpcMetricCardinalityPolicy&quot; --include=*.java .</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: 2026-09-01T05:36:06+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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:17:class GrpcMetr</tspan><tspan x="24" dy="22">icCardinalityPolicyTest {</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:38: assertThat</tspan><tspan x="24" dy="22">(GrpcMetricCardinalityPolicy.allowedTags())</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:49: Gr</tspan><tspan x="24" dy="22">pcMetricCardinalityPolicy.violations(</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:64: assertThat</tspan><tspan x="24" dy="22">(GrpcMetricCardinalityPolicy.violations(tags))</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:78: assertThat</tspan><tspan x="24" dy="22">(GrpcMetricCardinalityPolicy.violations(tags)).hasSize(3);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:85: Gr</tspan><tspan x="24" dy="22">pcMetricCardinalityPolicy.violations(</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:89: assertThat</tspan><tspan x="24" dy="22">(GrpcMetricCardinalityPolicy.violations(Map.of(&quot;grpc.status&quot;, &quot;Bearer eyJhbGci&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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:96: assertThat</tspan><tspan x="24" dy="22">(GrpcMetricCardinalityPolicy.violations(Map.of(&quot;grpc.pod_name&quot;, &quot;documents-7f9&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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:104: assertTha</tspan><tspan x="24" dy="22">t(GrpcMetricCardinalityPolicy.retryBucket(1)).isEqualTo(&quot;0&quot;);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:105: assertTha</tspan><tspan x="24" dy="22">t(GrpcMetricCardinalityPolicy.retryBucket(2)).isEqualTo(&quot;1&quot;);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:106: assertTha</tspan><tspan x="24" dy="22">t(GrpcMetricCardinalityPolicy.retryBucket(4)).isEqualTo(&quot;3+&quot;);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:107: assertTha</tspan><tspan x="24" dy="22">t(GrpcMetricCardinalityPolicy.retryBucket(99)).isEqualTo(&quot;3+&quot;);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:108: assertTha</tspan><tspan x="24" dy="22">t(GrpcMetricCardinalityPolicy.retryBuckets()).containsExactly(&quot;0&quot;, &quot;1&quot;, &quot;2&quot;, &quot;3+&quot;);</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">./grpc/grpc-observability/src/test/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicyTest.java:109: assertTha</tspan><tspan x="24" dy="22">tThrownBy(() -&gt; GrpcMetricCardinalityPolicy.retryBucket(0))</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicy.java:21:public final class</tspan><tspan x="24" dy="22"> GrpcMetricCardinalityPolicy {</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicy.java:57: private GrpcMetr</tspan><tspan x="24" dy="22">icCardinalityPolicy() {}</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcRpcObservation.java:55: * metric is tagged with </tspan><tspan x="24" dy="22">and {@link GrpcMetricCardinalityPolicy} has one thing to check.</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcRpcObservation.java:65: tags.put(&quot;grpc.retry_bu</tspan><tspan x="24" dy="22">cket&quot;, GrpcMetricCardinalityPolicy.retryBucket(attempts));</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcObservationConvention.java:13: * &lt;p&gt;Every registra</tspan><tspan x="24" dy="22">tion goes through {@link GrpcMetricCardinalityPolicy} first, and a violation</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">./grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcObservationConvention.java:92: List&lt;String&gt; vio</tspan><tspan x="24" dy="22">lations = GrpcMetricCardinalityPolicy.violations(tags);</tspan></text>
</svg>
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