Files
document-haness/docs/clean-architecture-backend-template/tech-log-studio/state-machines-and-ownership/concept/concept-grpc-operation-ledger-jpa-c02.md
T
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

1.8 KiB

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
key file
grpc-operation-ledger-jpa-c02 ../../../final/evidence/rendered/grpc-operation-ledger-jpa-c02.svg
../../../final/evidence/raw/grpc-operation-ledger-jpa-c02.txt
원본 분석 절은 analysis/grpc/grpc-operation-ledger-jpa.md#L76 이다.
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.