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>
194 lines
33 KiB
XML
194 lines
33 KiB
XML
<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="3252" viewBox="0 0 1200 3252" role="img">
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<title>terminal evidence</title>
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<desc>Terminal-style rendering generated from retained command output. Sensitive-looking values are redacted in the visual asset.</desc>
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<rect x="1" y="1" width="1198" height="3250" rx="14" fill="#0d1117" stroke="#30363d"/>
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<rect x="1" y="1" width="1198" height="44" rx="14" fill="#161b22"/>
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<rect x="1" y="30" width="1198" height="14" fill="#161b22"/>
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<circle cx="24" cy="22" r="6" fill="#ff5f57"/>
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<circle cx="44" cy="22" r="6" fill="#febc2e"/>
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<circle cx="64" cy="22" r="6" fill="#28c840"/>
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<text x="92" y="27" fill="#8b949e" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace">terminal evidence</text>
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<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">$ #!/bin/bash
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set -euo pipefail
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cd /shared/codebase/clean-architecture-backend-template
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A=src/grpc/grpc-policy/src/main/</tspan><tspan x="24" dy="22">java/dev/caskeleton/grpc/streaming/GrpcStreamAdmission.java
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test -f "$A"
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echo "# 승인과 해제의 본문"
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awk 'NR>=38 && NR<</tspan><tspan x="24" dy="22">=64 {printf " GrpcStreamAdmission.java:%d %s\n", NR, $0}' $A
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echo " 필드 넷 :"
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awk 'NR>=14 && NR<=18 {printf " GrpcSt</tspan><tspan x="24" dy="22">reamAdmission.java:%d %s\n", NR, $0}' $A
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echo
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echo "# 자바독이 서술하는 실패 시나리오"
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awk 'NR>=5 && NR<=12 {printf " </tspan><tspan x="24" dy="22">GrpcStreamAdmission.java:%d %s\n", NR, $0}' $A
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echo
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echo "# perCaller 가 나오는 줄 전부와 그 소속"
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grep -n 'perCaller' </tspan><tspan x="24" dy="22">$A | sed -E 's#^([0-9]+): *# GrpcStreamAdmission.java:\1 #'
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echo " :43 은 tryAdmit · :57 은 release · :73 은 open</tspan><tspan x="24" dy="22">StreamsFor 안이다"
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echo " 제거 계열 호출 (remove·clear·removeIf·compute·merge·keySet·entrySet) :"
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grep -nE 'per</tspan><tspan x="24" dy="22">Caller\.(remove|clear|compute|merge|keySet|entrySet)' $A || echo " 0 건"
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echo
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echo "# 이 타입을 참조하는 자리 — </tspan><tspan x="24" dy="22">경로 제한 없이 저장소 전체"
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echo " \$ git grep -l GrpcStreamAdmission (pathspec 없음)"
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git grep -l 'GrpcStreamAd</tspan><tspan x="24" dy="22">mission' | sed 's#^# #'
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echo " \$ git grep -l GrpcAdmissionController (대조군)"
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git grep -l 'GrpcAdmissionControl</tspan><tspan x="24" dy="22">ler' | sed 's#^# #'
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echo " 두 타입이 실린 배포 아티팩트가 있는가 :"
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python3 - <<'PY'
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import json
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d = json.load(open(</tspan><tspan x="24" dy="22">'src/config/architecture/modules.json'))
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n = e = 0
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def w(o):
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global n, e
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if isinstance(o, dict):
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if str(</tspan><tspan x="24" dy="22">o.get('id','')).startswith('grpc'):
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n += 1
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if not o.get('runtime_memberships'): e += 1
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f</tspan><tspan x="24" dy="22">or v in o.values(): w(v)
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elif isinstance(o, list):
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for v in o: w(v)
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w(d)
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print(f" modules.json 의 grpc le</tspan><tspan x="24" dy="22">af {n} 개 중 runtime_memberships 가 빈 것 : {e} 개")
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PY
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echo " 자원 파일·자동설정·리플렉션 경로 :"
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git grep -ln 'cask</tspan><tspan x="24" dy="22">eleton.grpc.streaming' -- '*.yml' '*.yaml' '*.properties' '*.xml' '*.imports' '*.factories' || echo " 0 건"
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git grep </tspan><tspan x="24" dy="22">-ln 'Class.forName' -- 'src/grpc/**' || echo " Class.forName 0 건"
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echo
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echo "# 같은 가족이 무제한 증가를 막는 다른 </tspan><tspan x="24" dy="22">자리"
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M=$(git grep -l 'class GrpcMetricCardinalityPolicy' -- 'src/**/*.java' | grep '/main/')
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test "$(printf '%s' "$M" |</tspan><tspan x="24" dy="22"> wc -l)" -eq 0
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echo " $M"
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awk 'NR>=12 && NR<=15 {printf " GrpcMetricCardinalityPolicy.java:%d %s\n", NR, $0}' "$M"
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ech</tspan><tspan x="24" dy="22">o " ALLOWED_TAGS 선언 범위와 원소 :"
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awk '/ALLOWED_TAGS =/,/[)];/ {printf " GrpcMetricCardinalityPolicy.java:%d %s\n",</tspan><tspan x="24" dy="22"> NR, $0}' "$M"
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echo
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echo "# 프로브 — 아래 소스를 그 자리에서 컴파일해 돌린다"
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grep -E 'new GrpcStreamAdmission|for [(]</tspan><tspan x="24" dy="22">|tryAdmit|release|mapSize\(a\)|run\(' \
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/tmp/probe5/MapGrowthProbe.java | sed 's/^ */ /'
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cd /tmp/probe5
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javac -nowa</tspan><tspan x="24" dy="22">rn -encoding UTF-8 -cp "$(cat /tmp/cp-grpc-policy.txt)" -d . MapGrowthProbe.java
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java -Dfile.encoding=UTF-8 -Dsun.stdout</tspan><tspan x="24" dy="22">.encoding=UTF-8 \
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-cp ".:$(cat /tmp/cp-grpc-policy.txt)" MapGrowthProbe
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</tspan></text>
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<text x="24" y="596" 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</tspan></text>
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<text x="24" y="618" fill="#8b949e" font-size="13" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0">time: 2026-09-04T02:49:19+00:00 · exit 0</tspan></text>
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<line x1="24" y1="632" x2="1176" y2="632" stroke="#30363d"/>
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<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"># 승인과 해제의 본문</tspan></text>
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<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"> GrpcStreamAdmission.java:38 public boolean tryAdmit(String callerFingerprint) {</tspan></text>
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<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"> GrpcStreamAdmission.java:39 if (callerFingerprint == null || callerFingerprint.isBlank()) {</tspan></text>
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<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"> GrpcStreamAdmission.java:40 throw new IllegalArgumentException("stream admission needs a caller fingerprint");</tspan></text>
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<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"> GrpcStreamAdmission.java:41 }</tspan></text>
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<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"> GrpcStreamAdmission.java:42 AtomicInteger callerCount =</tspan></text>
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<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"> GrpcStreamAdmission.java:43 perCaller.computeIfAbsent(callerFingerprint, key -> new AtomicInteger());</tspan></text>
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<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"> GrpcStreamAdmission.java:44 if (callerCount.get() >= maxStreamsPerCaller) {</tspan></text>
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<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"> GrpcStreamAdmission.java:45 return false;</tspan></text>
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<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"> GrpcStreamAdmission.java:46 }</tspan></text>
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<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"> GrpcStreamAdmission.java:47 if (openStreams.get() >= maxConcurrentStreams) {</tspan></text>
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<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"> GrpcStreamAdmission.java:48 return false;</tspan></text>
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<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"> GrpcStreamAdmission.java:49 }</tspan></text>
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<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"> GrpcStreamAdmission.java:50 callerCount.incrementAndGet();</tspan></text>
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<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"> GrpcStreamAdmission.java:51 openStreams.incrementAndGet();</tspan></text>
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<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"> GrpcStreamAdmission.java:52 return true;</tspan></text>
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<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"> GrpcStreamAdmission.java:53 }</tspan></text>
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<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"> GrpcStreamAdmission.java:54 </tspan></text>
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<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"> GrpcStreamAdmission.java:55 /** Releases a stream's slot. */</tspan></text>
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<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"> GrpcStreamAdmission.java:56 public void release(String callerFingerprint) {</tspan></text>
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<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"> GrpcStreamAdmission.java:57 AtomicInteger callerCount = perCaller.get(callerFingerprint);</tspan></text>
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<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"> GrpcStreamAdmission.java:58 if (callerCount != null && callerCount.get() > 0) {</tspan></text>
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<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"> GrpcStreamAdmission.java:59 callerCount.decrementAndGet();</tspan></text>
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<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"> GrpcStreamAdmission.java:60 }</tspan></text>
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<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"> GrpcStreamAdmission.java:61 if (openStreams.get() > 0) {</tspan></text>
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<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"> GrpcStreamAdmission.java:62 openStreams.decrementAndGet();</tspan></text>
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<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"> GrpcStreamAdmission.java:63 }</tspan></text>
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<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"> GrpcStreamAdmission.java:64 }</tspan></text>
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<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"> 필드 넷 :</tspan></text>
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<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"> GrpcStreamAdmission.java:14 private final int maxConcurrentStreams;</tspan></text>
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<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"> GrpcStreamAdmission.java:15 private final int maxStreamsPerCaller;</tspan></text>
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<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"> GrpcStreamAdmission.java:16 private final AtomicInteger openStreams = new AtomicInteger();</tspan></text>
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<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"> GrpcStreamAdmission.java:17 private final java.util.concurrent.ConcurrentMap<String, AtomicInteger> perCaller =</tspan></text>
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<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"> GrpcStreamAdmission.java:18 new java.util.concurrent.ConcurrentHashMap<>();</tspan></text>
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<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"></tspan></text>
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<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"># 자바독이 서술하는 실패 시나리오</tspan></text>
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<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"> GrpcStreamAdmission.java:5 /**</tspan></text>
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<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"> GrpcStreamAdmission.java:6 * Bounds how many streams a server holds open at once.</tspan></text>
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<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"> GrpcStreamAdmission.java:7 *</tspan></text>
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<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"> GrpcStreamAdmission.java:8 * <p>Streams are not requests: they occupy a connection, a queue and a producer for their whole</tspan></text>
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<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"> GrpcStreamAdmission.java:9 * lifetime, so the number of them is a capacity number in a way that request rate is not. Without </tspan><tspan x="24" dy="22">a</tspan></text>
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<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"> GrpcStreamAdmission.java:10 * bound, a client that reconnects on every error opens streams faster than the old ones close.</tspan></text>
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<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"> GrpcStreamAdmission.java:11 */</tspan></text>
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<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"> GrpcStreamAdmission.java:12 public final class GrpcStreamAdmission {</tspan></text>
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<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"></tspan></text>
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<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"># perCaller 가 나오는 줄 전부와 그 소속</tspan></text>
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<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"> GrpcStreamAdmission.java:17 private final java.util.concurrent.ConcurrentMap<String, AtomicInteger> perCaller =</tspan></text>
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<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"> GrpcStreamAdmission.java:43 perCaller.computeIfAbsent(callerFingerprint, key -> new AtomicInteger());</tspan></text>
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<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"> GrpcStreamAdmission.java:57 AtomicInteger callerCount = perCaller.get(callerFingerprint);</tspan></text>
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<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"> GrpcStreamAdmission.java:73 AtomicInteger callerCount = perCaller.get(callerFingerprint);</tspan></text>
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<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"> :43 은 tryAdmit · :57 은 release · :73 은 openStreamsFor 안이다</tspan></text>
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<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"> 제거 계열 호출 (remove·clear·removeIf·compute·merge·keySet·entrySet) :</tspan></text>
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<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">43: perCaller.computeIfAbsent(callerFingerprint, key -> new AtomicInteger());</tspan></text>
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<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"></tspan></text>
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<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"># 이 타입을 참조하는 자리 — 경로 제한 없이 저장소 전체</tspan></text>
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<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"> $ git grep -l GrpcStreamAdmission (pathspec 없음)</tspan></text>
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<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"> docs/2026-08-13-grpc-type-safe-rpc-platform-implementation-plan.md</tspan></text>
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<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"> src/grpc/grpc-policy/src/main/java/dev/caskeleton/grpc/streaming/GrpcStreamAdmission.java</tspan></text>
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<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"> src/grpc/grpc-policy/src/test/java/dev/caskeleton/grpc/streaming/GrpcFlowControlPolicyTest.java</tspan></text>
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<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"> $ git grep -l GrpcAdmissionController (대조군)</tspan></text>
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<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"> docs/2026-08-13-grpc-type-safe-rpc-platform-implementation-plan.md</tspan></text>
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<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"> docs/runbooks/grpc-platform-operations.md</tspan></text>
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<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"> src/grpc/grpc-admin/src/main/java/dev/caskeleton/grpc/admin/GrpcDrainCoordinator.java</tspan></text>
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<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"> src/grpc/grpc-admin/src/test/java/dev/caskeleton/grpc/admin/GrpcDrainCoordinatorTest.java</tspan></text>
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<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"> src/grpc/grpc-server/src/main/java/dev/caskeleton/grpc/server/GrpcAdmissionController.java</tspan></text>
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<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"> src/grpc/grpc-server/src/test/java/dev/caskeleton/grpc/server/GrpcServerProfileTest.java</tspan></text>
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<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"> src/grpc/grpc-spring-boot-starter/src/main/java/dev/caskeleton/grpc/boot/GrpcPlatformAutoConfiguration.java</tspan></text>
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<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"> 두 타입이 실린 배포 아티팩트가 있는가 :</tspan></text>
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<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"> modules.json 의 grpc leaf 18 개 중 runtime_memberships 가 빈 것 : 18 개</tspan></text>
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<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"> 자원 파일·자동설정·리플렉션 경로 :</tspan></text>
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<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"> 0 건</tspan></text>
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<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"> Class.forName 0 건</tspan></text>
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<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"></tspan></text>
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<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"># 같은 가족이 무제한 증가를 막는 다른 자리</tspan></text>
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<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"> src/grpc/grpc-observability/src/main/java/dev/caskeleton/grpc/observability/GrpcMetricCardinalityPolicy.java</tspan></text>
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<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"> GrpcMetricCardinalityPolicy.java:12 * <p>An allowlist, because the failure is not a bad tag — it is an unbounded one. A tag </tspan><tspan x="24" dy="22">whose value</tspan></text>
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<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"> GrpcMetricCardinalityPolicy.java:13 * space grows with traffic multiplies every time series by that space: one tenant id turn</tspan><tspan x="24" dy="22">s a</tspan></text>
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<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"> GrpcMetricCardinalityPolicy.java:14 * hundred series into a hundred thousand, and the metric backend either drops the data or</tspan><tspan x="24" dy="22"> bills for</tspan></text>
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<text x="24" y="2476" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:15 * it. By the time anyone notices, the dashboards built on those metrics are already gone.</tspan></text>
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<text x="24" y="2498" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> ALLOWED_TAGS 선언 범위와 원소 :</tspan></text>
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<text x="24" y="2520" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:24 private static final Set<String> ALLOWED_TAGS =</tspan></text>
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<text x="24" y="2542" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:25 Set.of(</tspan></text>
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<text x="24" y="2564" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:26 "grpc.service",</tspan></text>
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<text x="24" y="2586" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:27 "grpc.method",</tspan></text>
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<text x="24" y="2608" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:28 "grpc.rpc_type",</tspan></text>
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<text x="24" y="2630" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:29 "grpc.status",</tspan></text>
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<text x="24" y="2652" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:30 "grpc.channel_profile",</tspan></text>
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<text x="24" y="2674" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:31 "grpc.completion_outcome",</tspan></text>
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<text x="24" y="2696" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:32 "grpc.retry_bucket",</tspan></text>
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<text x="24" y="2718" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcMetricCardinalityPolicy.java:33 "grpc.stream_termination_reason");</tspan></text>
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<text x="24" y="2740" 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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<text x="24" y="2762" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"># 프로브 — 아래 소스를 그 자리에서 컴파일해 돌린다</tspan></text>
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<text x="24" y="2784" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcStreamAdmission a = new GrpcStreamAdmission(200000, 200000);</tspan></text>
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<text x="24" y="2806" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> for (int i = 0; i < n; i++) { a.tryAdmit("fp-" + i); a.release("fp-" + i); }</tspan></text>
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<text x="24" y="2828" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> int after = mapSize(a);</tspan></text>
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<text x="24" y="2850" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> for (int i = 0; i < n; i++) { a.tryAdmit("fp-" + i); a.release("fp-" + i); }</tspan></text>
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<text x="24" y="2872" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> int again = mapSize(a);</tspan></text>
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<text x="24" y="2894" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> a.tryAdmit("new-one"); a.release("new-one");</tspan></text>
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<text x="24" y="2916" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> n, a.openStreams(), after, again, mapSize(a));</tspan></text>
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<text x="24" y="2938" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> GrpcStreamAdmission a = new GrpcStreamAdmission(1, 1);</tspan></text>
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<text x="24" y="2960" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> boolean held = a.tryAdmit("holder");</tspan></text>
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<text x="24" y="2982" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> for (int i = 0; i < n; i++) if (!a.tryAdmit("fp-" + i)) refusedCount++;</tspan></text>
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<text x="24" y="3004" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> System.out.printf(" openStreams=%d (상한 1) · 맵 %d%n", a.openStreams(), mapSize(a));</tspan></text>
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<text x="24" y="3026" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 가. 열고 모두 닫았을 때 맵이 줄어드는가</tspan></text>
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<text x="24" y="3048" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 호출자 3 개를 열고 모두 닫음 : openStreams=0 · 맵 3 · 같은 지문 반복 후 3 · 새 지문 하나 후 4</tspan></text>
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<text x="24" y="3070" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 호출자 50000 개를 열고 모두 닫음 : openStreams=0 · 맵 50000 · 같은 지문 반복 후 50000 · 새 지문 하나 후 50001</tspan></text>
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<text x="24" y="3092" 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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<text x="24" y="3114" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 나. 상한에 걸려 거절된 승인도 항목을 만드는가</tspan></text>
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<text x="24" y="3136" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 상한 (1,1) 에서 먼저 하나 승인=true · 이후 3 번 시도 중 거절 3</tspan></text>
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<text x="24" y="3158" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> openStreams=1 (상한 1) · 맵 4</tspan></text>
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<text x="24" y="3180" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> 상한 (1,1) 에서 먼저 하나 승인=true · 이후 50000 번 시도 중 거절 50000</tspan></text>
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<text x="24" y="3202" fill="#e6edf3" font-size="14" font-family="ui-monospace, SFMono-Regular, Menlo, Consolas, monospace" xml:space="preserve"><tspan x="24" dy="0"> openStreams=1 (상한 1) · 맵 50001</tspan></text>
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