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document-haness/docs/clean-architecture-backend-template/final/evidence/rendered/a-resumed-redrive-skips-what-it-could-not-move.svg
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

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<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="2482" viewBox="0 0 1200 2482" 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>
<rect x="1" y="1" width="1198" height="2480" rx="14" fill="#0d1117" stroke="#30363d"/>
<rect x="1" y="1" width="1198" height="44" rx="14" fill="#161b22"/>
<rect x="1" y="30" width="1198" height="14" fill="#161b22"/>
<circle cx="24" cy="22" r="6" fill="#ff5f57"/>
<circle cx="44" cy="22" r="6" fill="#febc2e"/>
<circle cx="64" cy="22" r="6" fill="#28c840"/>
<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">$ M=messaging/messaging-admin-runtime/src/main/java/dev/caskeleton/messaging/admin/runtime
A=messaging/messaging-admin-a</tspan><tspan x="24" dy="22">pi/src/main/java/dev/caskeleton/messaging/admin
T=messaging/messaging-admin-runtime/src/test/java/dev/caskeleton/messagi</tspan><tspan x="24" dy="22">ng/admin/runtime
echo &#x27;# 재개 지점의 계약&#x27;
grep -n &#x27;param resumeFrom&#x27; $M/RedriveService.java
echo &#x27;# 그리고 건너뛰는 </tspan><tspan x="24" dy="22">자리의 주석&#x27;
sed -n &#x27;109,113p&#x27; $M/RedriveService.java
echo
echo &#x27;# 그런데 체크포인트가 세는 것은 시도한 개수다&#x27;
sed -n &#x27;</tspan><tspan x="24" dy="22">105,107p;114,120p&#x27; $M/RedriveService.java
echo
echo &#x27;# 그 체크포인트 값이 다음 재개 지점이 된다&#x27;
sed -n &#x27;55,61p&#x27; $M/InMe</tspan><tspan x="24" dy="22">moryAdminOperationJournal.java
sed -n &#x27;101,106p&#x27; $M/InMemoryAdminOperationJournal.java
echo &#x27;# 두 저널 구현이 각각 되</tspan><tspan x="24" dy="22">돌아가지 않게 고정한다&#x27;
grep -n &#x27;Math.max(current.itemsCompleted()&#x27; $M/InMemoryAdminOperationJournal.java | head -1
grep</tspan><tspan x="24" dy="22"> -rn &#x27;GREATEST&#x27; --include=JdbcAdminOperationJournal.java . | sed &#x27;s|.*/||&#x27; | head -1
echo
echo &#x27;# 완료로 닫힌 승인은 다</tspan><tspan x="24" dy="22">시 인수되지 않는다&#x27;
sed -n &#x27;86,89p&#x27; $M/InMemoryAdminOperationJournal.java
echo
echo &#x27;# 목록은 매번 다시 조회하고, 확인되</tspan><tspan x="24" dy="22">지 않은 재발행은 정착시키지 않는다&#x27;
grep -n &#x27;source.peek(request.source&#x27; $M/RedriveService.java
sed -n &#x27;10,13p&#x27; $A/Redri</tspan><tspan x="24" dy="22">veResult.java
echo
echo &#x27;# 전부 정산됐는지 묻는 술어가 이미 있다&#x27;
sed -n &#x27;41,48p&#x27; $A/RedriveResult.java
echo -n &#x27;# 그 </tspan><tspan x="24" dy="22">술어를 부르는 main 코드: &#x27;
grep -rn &#x27;isFullyAccounted&#x27; --include=*.java . | grep &#x27;/main/&#x27; | grep -vc &#x27;RedriveResult.java</tspan><tspan x="24" dy="22">&#x27;
echo -n &#x27;# 부르는 테스트 메서드: &#x27;
grep -rn &#x27;isFullyAccounted&#x27; --include=*.java . | grep &#x27;/test/&#x27; | sed &#x27;s|.*/||&#x27;
ec</tspan><tspan x="24" dy="22">ho
echo &#x27;# 이 경로에는 실행 가능한 구현이 없다&#x27;
echo -n &#x27; 오케스트레이터를 생성하는 코드: &#x27;
grep -rn &#x27;new DefaultMessag</tspan><tspan x="24" dy="22">ingAdminService&#x27; --include=*.java . | wc -l
echo -n &#x27; RedriveSource 를 구현하는 main 코드: &#x27;
grep -rn &#x27;implements Redri</tspan><tspan x="24" dy="22">veService.RedriveSource&#x27; --include=*.java . | grep -c &#x27;/main/&#x27;
echo &#x27; 유일한 구현과 그 조회·정착&#x27;
sed -n &#x27;183,201p&#x27; $T</tspan><tspan x="24" dy="22">/RedriveResumptionTest.java
</tspan></text>
<text x="24" y="442" 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="464" fill="#8b949e" font-size="13" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">time: 2026-09-02T02:14:53+00:00 · exit 0</tspan></text>
<line x1="24" y1="478" x2="1176" y2="478" stroke="#30363d"/>
<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"># 재개 지점의 계약</tspan></text>
<text x="24" y="540" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">81: * @param resumeFrom how many candidates a previous attempt durably moved</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"># 그리고 건너뛰는 자리의 주석</tspan></text>
<text x="24" y="584" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> // Everything before resumeFrom was moved and settled by the previous attempt. Re-publishing</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"> // it is not a retry, it is a duplicate.</tspan></text>
<text x="24" y="628" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> for (MessageId messageId :</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"> candidates.subList(Math.min(resumeFrom, candidates.size()), candidates.size())) {</tspan></text>
<text x="24" y="672" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> if (attempt(messageId, request)) {</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"></tspan></text>
<text x="24" y="716" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 그런데 체크포인트가 세는 것은 시도한 개수다</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"> List&lt;MessageId&gt; moved = new ArrayList&lt;&gt;();</tspan></text>
<text x="24" y="760" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> int failed = 0;</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"> int completed = resumeFrom;</tspan></text>
<text x="24" y="804" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> moved.add(messageId);</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"> } else {</tspan></text>
<text x="24" y="848" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> failed++;</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"> }</tspan></text>
<text x="24" y="892" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> completed++;</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"> checkpoint.accept(completed);</tspan></text>
<text x="24" y="936" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> }</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"></tspan></text>
<text x="24" y="980" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 그 체크포인트 값이 다음 재개 지점이 된다</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"> return new AdminOperationLease(</tspan></text>
<text x="24" y="1024" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> approvalTicket,</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"> planDigest,</tspan></text>
<text x="24" y="1068" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> claimed.operationId(),</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"> claimed.leaseOwner(),</tspan></text>
<text x="24" y="1112" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> claimed.leaseToken(),</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"> claimed.itemsCompleted());</tspan></text>
<text x="24" y="1156" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> // Either the previous attempt failed, or its lease expired without a completion. Both resume</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"> // from the checkpoint under a new token, which fences the previous holder out.</tspan></text>
<text x="24" y="1200" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> return new AdminOperationRecord(</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"> approvalTicket,</tspan></text>
<text x="24" y="1244" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> planDigest,</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"> operationId,</tspan></text>
<text x="24" y="1288" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 두 저널 구현이 각각 되돌아가지 않게 고정한다</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">128: Math.max(current.itemsCompleted(), itemsCompleted),</tspan></text>
<text x="24" y="1332" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">JdbcAdminOperationJournal.java:76: SET items_completed = GREATEST(items_completed, ?),</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"></tspan></text>
<text x="24" y="1376" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 완료로 닫힌 승인은 다시 인수되지 않는다</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"> if (existing.state() == AdminOperationState.COMPLETED) {</tspan></text>
<text x="24" y="1420" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> throw new MessageAuthorizationException(</tspan></text>
<text x="24" y="1442" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> &quot;APPROVAL_ALREADY_EXECUTED&quot;,</tspan></text>
<text x="24" y="1464" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> (&quot;approval %s was already executed to completion at %s; an approval authorises one&quot;</tspan></text>
<text x="24" y="1486" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="1508" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 목록은 매번 다시 조회하고, 확인되지 않은 재발행은 정착시키지 않는다</tspan></text>
<text x="24" y="1530" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">100: List&lt;MessageId&gt; candidates = source.peek(request.source(), request.batchSize());</tspan></text>
<text x="24" y="1552" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * &lt;p&gt;{@code stillParked} is not simply {@code candidates - moved}. A message stays parked when its</tspan></text>
<text x="24" y="1574" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * republish did not confirm, and the redrive deliberately leaves it there rather than settling it —</tspan></text>
<text x="24" y="1596" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * the DLQ-confirm-before-settle rule applies to a redrive exactly as it does to the original</tspan></text>
<text x="24" y="1618" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * dead-lettering, because a redrive that settles an unconfirmed republish deletes the last copy.</tspan></text>
<text x="24" y="1640" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="1662" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 전부 정산됐는지 묻는 술어가 이미 있다</tspan></text>
<text x="24" y="1684" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * Reports whether every candidate was accounted for.</tspan></text>
<text x="24" y="1706" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> *</tspan></text>
<text x="24" y="1728" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * &lt;p&gt;An unaccounted message is a bug, not a partial success: it was neither republished nor left</tspan></text>
<text x="24" y="1750" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * parked, which means the redrive lost track of it.</tspan></text>
<text x="24" y="1772" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> *</tspan></text>
<text x="24" y="1794" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> * @return true when moved plus still-parked covers every candidate</tspan></text>
<text x="24" y="1816" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> */</tspan></text>
<text x="24" y="1838" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> public boolean isFullyAccounted() {</tspan></text>
<text x="24" y="1860" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 그 술어를 부르는 main 코드: 0</tspan></text>
<text x="24" y="1882" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 부르는 테스트 메서드: ApprovedPlanExecutionTest.java:214: assertThat(accounted.isFullyAccounted()).isTrue();</tspan></text>
<text x="24" y="1904" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">ApprovedPlanExecutionTest.java:215: assertThat(unaccounted.isFullyAccounted())</tspan></text>
<text x="24" y="1926" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="1948" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 이 경로에는 실행 가능한 구현이 없다</tspan></text>
<text x="24" y="1970" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 오케스트레이터를 생성하는 코드: 0</tspan></text>
<text x="24" y="1992" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> RedriveSource 를 구현하는 main 코드: 0</tspan></text>
<text x="24" y="2014" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 유일한 구현과 그 조회·정착</tspan></text>
<text x="24" y="2036" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> private static final class RecordingSource implements RedriveService.RedriveSource {</tspan></text>
<text x="24" y="2058" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="2080" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> private List&lt;MessageId&gt; staged = List.of();</tspan></text>
<text x="24" y="2102" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> private final List&lt;MessageId&gt; settled = new ArrayList&lt;&gt;();</tspan></text>
<text x="24" y="2124" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="2146" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> private void stage(List&lt;MessageId&gt; ids) {</tspan></text>
<text x="24" y="2168" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> staged = List.copyOf(ids);</tspan></text>
<text x="24" y="2190" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> }</tspan></text>
<text x="24" y="2212" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="2234" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> @Override</tspan></text>
<text x="24" y="2256" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> public List&lt;MessageId&gt; peek(DestinationName destination, int batchSize) {</tspan></text>
<text x="24" y="2278" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> return staged;</tspan></text>
<text x="24" y="2300" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> }</tspan></text>
<text x="24" y="2322" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"></tspan></text>
<text x="24" y="2344" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> @Override</tspan></text>
<text x="24" y="2366" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> public void settle(DestinationName destination, MessageId messageId) {</tspan></text>
<text x="24" y="2388" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> settled.add(messageId);</tspan></text>
<text x="24" y="2410" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> }</tspan></text>
<text x="24" y="2432" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> }</tspan></text>
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