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document-haness/docs/clean-architecture-backend-template/final/evidence/raw/a05-f005-jparetrypolicy-probe.txt
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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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# 애플리케이션이 준 정책을 넣고, 그 정책이 불리는지 센다
AtomicInteger workCalls = new AtomicInteger();
JpaRetryPolicy customPolicy =
(failure, attempt) -> {
policyCalls.incrementAndGet();
return RetryDecision.fail("application policy says do not retry");
};
var profile =
TransactionProfile.write("order.write", Duration.ofSeconds(5))
.withRetryProfile(RetryProfile.boundedContention("order.write", 2));
애플리케이션 정책 호출 : 0
작업 호출 : 2
최종 예외 : SerializationFailureException
# 플랫폼이 자기 빈에 넣는 기본 프로파일
@ConditionalOnMissingBean
@ConditionalOnBean(SpringJpaTransactionExecutor.class)
public FullTransactionRetryCoordinator jpaRetryCoordinator(
SpringJpaTransactionExecutor executor, RetryEventListener retryListener, Clock clock) {
return new JpaTransactionAutoConfiguration(clock)
.retryCoordinator(
executor,
dev.caskeleton.adapter.outbound.persistence.api.transaction.RetryProfile
.boundedContention("jpa-platform-default", 3),
retryListener);
}