DongHyeonkaandClaude Opus 5
b2963105a8
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>
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kind, slug, title, topic, project, status, sourceRevision, rootTreeNode, evidenceCapturedOn, assets, evidence, source, module
| kind | slug | title | topic | project | status | sourceRevision | rootTreeNode | evidenceCapturedOn | assets | evidence | source | module | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CONCEPT | messaging-schema-json-c06 | 메시지당 유지 메모리를 성능 테스트가 간접 확인한다 | state-machines-and-ownership | clean-architecture-backend-template | 게시 전 | 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 | concept:messaging-schema-json-c06 | 2026-09-01 |
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messaging-schema-json |
메시지당 유지 메모리를 성능 테스트가 간접 확인한다
JacksonMessageCodec은 불변이고 BoundedByteSink는 매 encode마다 새로 만들어져 공유되지 않는다.
관계
- 실패 코드는 운영자의 다음 행동이 갈리는 지점마다 나눈다 같은 분석 리프에서 끌어낸 규칙이다.
본문
JacksonMessageCodec은 불변이다 — registry는 Map.copyOf, maxBytes는 int, mapper는 빌드 후 재구성되지 않는 Jackson ObjectMapper(스레드 안전). BoundedByteSink는 매 encode마다 새로 만들어지므로 공유되지 않는다.
JacksonMessageCodec 참조 위치
:::evidence key="messaging-schema-json-c06" alt="코드베이스에서 JacksonMessageCodec 를 검색한 출력 39줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="JacksonMessageCodec 코드베이스 검색 — 39줄 · exit 0" zoom="true" :::
성능 테스트가 간접 확인하는 것
PlatformOverheadPerformanceTest.aRoundTripDoesNotAllocateAGrowingRetainedSet이 codec이 메시지별 상태를 보유하지 않음을 간접 확인한다(메시지당 유지 메모리 64바이트 미만).