feat: 오토스케일링/로드밸런싱 검증용 Grafana 대시보드 패널 추가 (#687)

[GANGHYEON02]

Closes #687

변경 내용

• common-dashboard.json에 패널 2개 추가
  • 인스턴스별 RPS: by (instance_name) 기준 timeseries — 트래픽 분산 확인
  • 활성 인스턴스 수: count(up{job="hard-click-backend"} == 1) stat — 스케일아웃/인 이벤트 확인
• 기존 패널은 변경 없음

체크리스트

• 로컬 빌드 통과 (./gradlew build)
• Flyway 파일 포함 여부 확인 — 해당 없음 (Grafana JSON 설정 변경만)
• ddl-auto: update 없음
• MinIO 설정 없음
• InfluxDB 설정 없음

[coderabbitai]

Important

Review skipped

Review was skipped due to path filters

⛔ Files ignored due to path filters (1)

• monitoring/grafana/provisioning/dashboards/json/common-dashboard.json is excluded by none and included by none

CodeRabbit blocks several paths by default. You can override this behavior by explicitly including those paths in the path filters. For example, including **/dist/** will override the default block on the dist directory, by removing the pattern from both the lists.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: a2e64e1a-4075-4c59-b335-3e4d66680cc8

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/#687-grafana-autoscale-dashboard

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

Test Results

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit 153efa2. ± Comparison against base commit 1491ea0.

[github-actions]

Gate 2 · 결정론 판정

88 tests  ±0   82 ✅ ±0   0s ⏱️ ±0s
29 suites ±0    6 💤 ±0 
29 files   ±0    0 ❌ ±0 

Results for commit 153efa2. ± Comparison against base commit 1491ea0.

[github-actions]

Gate 1 · 결정론 규칙

16 tests  ±0   16 ✅ ±0   0s ⏱️ -1s
 3 suites ±0    0 💤 ±0 
 3 files   ±0    0 ❌ ±0 

Results for commit 153efa2. ± Comparison against base commit 1491ea0.

[dlxodus02]

확인