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>
58 lines
3.4 KiB
Markdown
58 lines
3.4 KiB
Markdown
---
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kind: CONCEPT
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slug: adapter-outbound-cache-redis-c07
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title: guard 아래에서는 명령 이름으로 위험을 다시 유도할 수 없다
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topic: schema-and-wire-models
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project: clean-architecture-backend-template
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status: 게시 전
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sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
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rootTreeNode: concept:adapter-outbound-cache-redis-c07
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: adapter-outbound-cache-redis-c07
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file: ../../../final/evidence/rendered/adapter-outbound-cache-redis-c07.svg
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evidence:
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- ../../../final/evidence/raw/adapter-outbound-cache-redis-c07.txt
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source:
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- 원본 분석 절은 analysis/10-adapter-outbound-cache-redis.md#L350 이다.
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module: adapter-outbound-cache-redis
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---
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# guard 아래에서는 명령 이름으로 위험을 다시 유도할 수 없다
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`RedisCommandDescriptor`가 공식 서버 메타데이터와 조직 정책의 접합점이고, 생성자가 그 접합의 모순 네 가지를 거부한다.
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## 본문
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<!-- body:start -->
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`RedisCommandDescriptor`는 "the join between official server metadata and organization policy"이고, 그 아래를 못박는다 — "Nothing downstream of the guard is allowed to re-derive risk, access, or timeout from a command name." 생성자가 그 접합의 모순 네 가지를 거부한다.
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| 불변식 | 의미 |
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|---|---|
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| `BLOCKED` ⇒ `access == NONE` | 차단된 명령은 ACL 계정을 갖지 않는다 |
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| `R4` ⇒ `BLOCKED` | 최고 위험은 반드시 차단 |
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| `R3` ⇒ `ADMIN_ONLY` 또는 `BLOCKED` | 관리 위험은 애플리케이션에 열리지 않는다 |
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| 쓰기 ∧ `retrySafe` ∧ `mayBeAmbiguous` ⇒ 거부 | 모호할 수 있는 쓰기를 재시도 안전으로 선언 불가 |
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마지막 하나가 §23의 런타임 불변식과 같은 규칙의 **선언 시점** 짝이다 — 하나는 정책 파일이 거짓말하지 못하게 하고, 하나는 실패 객체가 거짓말하지 못하게 한다.
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## RedisCommandDescriptor 참조 위치
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:::evidence key="adapter-outbound-cache-redis-c07" alt="코드베이스에서 RedisCommandDescriptor 를 검색한 출력 28줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="RedisCommandDescriptor 코드베이스 검색 — 28줄 · exit 0" zoom="true"
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:::
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## KeySpec과 CommandId가 없애는 불일치
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`KeySpec`은 공식 Redis 규약(1-based, 음수 lastKey는 뒤에서부터, `movable`은 정적 유도 불가)을 그대로 따르고, `movable`이면 `resolvePositions`가 던진다 — "movable key specification must be resolved by the server". `CommandId`는 항상 대문자로 정규화해 "a policy file, a server metadata reply, and an SDK call site cannot disagree because of casing."
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## permit이 절대 넓히지 못하는 것
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permit 세 종은 인터페이스이고 javadoc이 경계를 명확히 한다 — "Application code may implement this interface, but a self-made instance never passes `RedisPermitVerifier`… The final enforcement boundary remains the Redis ACL account, which a permit never widens." `PersistentKeyPermit`은 한 줄 더 붙인다: "Cache, session, lock, idempotency, and rate-limit APIs never accept this permit."
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## 예산이 선택이 아닌 이유
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`OperationBudget`도 규칙을 문서로 못박는다 — "Every R2 API requires a budget. The budget is never optional and never defaulted, because the whole point is that the caller states the cost it is prepared to pay before Redis is asked."
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<!-- body:end -->
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