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 | grpc-operation-ledger-jpa-c02 | 같은 신원의 두 번째 청구가 같은 행을 겨냥한다 | state-machines-and-ownership | clean-architecture-backend-template | 게시 전 | 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 | concept:grpc-operation-ledger-jpa-c02 | 2026-09-01 |
|
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|
grpc-operation-ledger-jpa |
같은 신원의 두 번째 청구가 같은 행을 겨냥한다
기본 키는 유니크 제약의 세 컬럼을 이어 붙인 파생값이다. 복합 쪽이 원자성을 주고 파생 키가 조회에 단일 컬럼 기본 키를 준다.
본문
기본 키는 유니크 제약의 세 컬럼을 이어 붙인 파생값이다.
public String storageKey() {
return callerFingerprint + "|" + method.canonical() + "|" + idempotencyKeyHash;
}
GrpcOperationIdentity 참조 위치
:::evidence key="grpc-operation-ledger-jpa-c02" alt="코드베이스에서 GrpcOperationIdentity 를 검색한 출력 19줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="GrpcOperationIdentity 코드베이스 검색 — 19줄 · exit 0" zoom="true" :::
이중 저장의 근거와 그 결과
엔티티 javadoc 이 그 이중 저장을 설명한다 — 복합 쪽이 원자성을 주고, 파생 키가 조회에 단일 컬럼 기본 키를 준다. 그래서 같은 신원의 두 번째 청구는 같은 기본 키 행을 겨냥한다. §17.1 이 그 사실에서 나온다.