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design/backend/sequence/inner/event-상세조회.puml

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+@startuml event-상세조회
+!theme mono
+
+title Event Service - 이벤트 상세 조회 (UFR-EVENT-060)
+
+participant "EventController" as Controller <<C>>
+participant "EventService" as Service <<S>>
+participant "EventRepository" as Repo <<R>>
+participant "Redis Cache" as Cache <<E>>
+database "Event DB" as DB <<E>>
+
+note over Controller: GET /api/events/{id}
+Controller -> Service: getEventDetail(eventId, userId)
+activate Service
+
+Service -> Cache: get("event:" + eventId)
+activate Cache
+
+alt 캐시 히트
+    Cache --> Service: Event data
+    Service -> Service: validateAccess(userId, event)
+    note right: 사용자 권한 검증
+    Service --> Controller: EventDetailResponse
+
+else 캐시 미스
+    Cache --> Service: null
+    deactivate Cache
+
+    Service -> Repo: findById(eventId)
+    activate Repo
+    Repo -> DB: 이벤트 상세 정보 조회\n(이벤트ID로 이벤트 정보,\n경품 정보, 배포 이력을\nJOIN하여 함께 조회)
+    activate DB
+    note right: JOIN으로\n경품 정보 및\n배포 이력 조회
+    DB --> Repo: Event with prizes and distributions
+    deactivate DB
+    Repo --> Service: Event entity (with relations)
+    deactivate Repo
+
+    Service -> Service: validateAccess(userId, event)
+
+    Service -> Cache: set("event:" + eventId, event, TTL=5분)
+    activate Cache
+    Cache --> Service: OK
+    deactivate Cache
+end
+
+Service --> Controller: EventDetailResponse\n{eventId, title, objective,\nprizes, period, status,\nchannels, distributionStatus,\ncreatedAt, publishedAt}
+deactivate Service
+
+Controller --> Client: 200 OK\n{event: {...},\nprizes: [...],\ndistributionStatus: {...}}
+
+note over Controller, DB: 상세 정보 포함:\n- 기본 정보 (제목, 목적, 기간, 상태)\n- 경품 정보\n- 참여 방법\n- 배포 채널 현황\n- 실시간 통계 (Analytics Service)\n\nAnalytics 통계는\n별도 API 호출
+
+@enduml