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document-haness/docs/clean-architecture-backend-template/final/evidence/rendered/messaging-schema-avro-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="1470" viewBox="0 0 1200 1470" 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>
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<rect x="1" y="1" width="1198" height="44" rx="14" fill="#161b22"/>
<rect x="1" y="30" width="1198" height="14" fill="#161b22"/>
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<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;GenericRecord&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: 2026-09-01T05:37:05+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">./messaging/messaging-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:21:import org.ap</tspan><tspan x="24" dy="22">ache.avro.generic.GenericRecord;</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:88: private sta</tspan><tspan x="24" dy="22">tic GenericRecord v1Record() {</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:89: GenericRe</tspan><tspan x="24" dy="22">cord record = new GenericData.Record(V1_SCHEMA);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:102: GenericR</tspan><tspan x="24" dy="22">ecord decoded = codec.decode(ORDER_CREATED, V1, encoded.bytes(), GenericRecord.class);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:127: GenericR</tspan><tspan x="24" dy="22">ecord evolved = codec.decodeEvolved(ORDER_CREATED, V1, V2, encoded.bytes());</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroCompatibilityTest.java:154: GenericR</tspan><tspan x="24" dy="22">ecord wrongShape = new GenericData.Record(V2_SCHEMA);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroRegistryBoundsTest.java:15:import org.a</tspan><tspan x="24" dy="22">pache.avro.generic.GenericRecord;</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroRegistryBoundsTest.java:96: GenericR</tspan><tspan x="24" dy="22">ecord large = record(V1_SCHEMA);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroRegistryBoundsTest.java:131: private s</tspan><tspan x="24" dy="22">tatic GenericRecord record(Schema schema) {</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroRegistryBoundsTest.java:132: Generic</tspan><tspan x="24" dy="22">Record record = new GenericData.Record(schema);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroHostileInputTest.java:15:import org.apa</tspan><tspan x="24" dy="22">che.avro.generic.GenericRecord;</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroHostileInputTest.java:79: assertThat</tspan><tspan x="24" dy="22">ThrownBy(() -&gt; codec.decode(BASKET, V1, hostile, GenericRecord.class))</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroHostileInputTest.java:100: assertTha</tspan><tspan x="24" dy="22">tThrownBy(() -&gt; codec.decode(BASKET, V1, zigzag(4_294_967_296L), GenericRecord.class))</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroHostileInputTest.java:109: GenericRe</tspan><tspan x="24" dy="22">cord basket = new GenericData.Record(V1_SCHEMA);</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-schema-avro/src/test/java/dev/caskeleton/messaging/schema/avro/AvroHostileInputTest.java:113: GenericRe</tspan><tspan x="24" dy="22">cord decoded = codec.decode(BASKET, V1, encoded, GenericRecord.class);</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:22:import org.apache.</tspan><tspan x="24" dy="22">avro.generic.GenericRecord;</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:109: if (!(payload</tspan><tspan x="24" dy="22"> instanceof GenericRecord record)) {</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:112: &quot;the Av</tspan><tspan x="24" dy="22">ro codec encodes GenericRecord payloads, not &quot;</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:127: DatumWriter&lt;G</tspan><tspan x="24" dy="22">enericRecord&gt; writer = new GenericDatumWriter&lt;&gt;(schema);</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:153: if (!payloadT</tspan><tspan x="24" dy="22">ype.isAssignableFrom(GenericRecord.class)</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:154: &amp;&amp; !Gener</tspan><tspan x="24" dy="22">icRecord.class.isAssignableFrom(payloadType)) {</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:157: &quot;the Av</tspan><tspan x="24" dy="22">ro codec decodes into GenericRecord, not &quot; + payloadType.getSimpleName());</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:160: DatumReader&lt;G</tspan><tspan x="24" dy="22">enericRecord&gt; reader = boundedReader(writerSchema, writerSchema);</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:196: public GenericR</tspan><tspan x="24" dy="22">ecord decodeEvolved(</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:206: DatumReader&lt;G</tspan><tspan x="24" dy="22">enericRecord&gt; reader = boundedReader(writerSchema, readerSchema);</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-schema-avro/src/main/java/dev/caskeleton/messaging/schema/avro/AvroMessageCodec.java:237: private DatumRe</tspan><tspan x="24" dy="22">ader&lt;GenericRecord&gt; boundedReader(Schema writerSchema, Schema readerSchema) {</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">./adapter/outbound/messaging/src/test/java/dev/caskeleton/adapter/outbound/messaging/contract/ContractCatalogCompilerTest.java:3</tspan><tspan x="24" dy="22">40: void rejectsOpenRawWildcardMapJsonTreeInterfaceAndGenericRecordGraphs() {</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">./adapter/outbound/messaging/src/test/java/dev/caskeleton/adapter/outbound/messaging/contract/ContractCatalogCompilerTest.java:3</tspan><tspan x="24" dy="22">47: assertUnsupportedGraph(GenericRecordPayload.class, List.of(&quot;value&quot;));</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">./adapter/outbound/messaging/src/test/java/dev/caskeleton/adapter/outbound/messaging/contract/ContractCatalogCompilerTest.java:5</tspan><tspan x="24" dy="22">61: private record GenericRecordPayload(GenericNested&lt;String&gt; value) implements IntegrationPayload {}</tspan></text>
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