diff --git a/design/backend/sequence/inner/distribution-다중채널배포.puml b/design/backend/sequence/inner/distribution-다중채널배포.puml
index 299407e..6f5eea9 100644
--- a/design/backend/sequence/inner/distribution-다중채널배포.puml
+++ b/design/backend/sequence/inner/distribution-다중채널배포.puml
@@ -9,7 +9,6 @@ participant "Distribution\nController" as Controller
 participant "Distribution\nService" as Service
 database "Distribution DB" as DB
 queue "Kafka" as Kafka
-participant "Redis Cache" as Cache
 
 == REST API 동기 호출 수신 ==
 EventSvc -> API: POST /api/distribution/distribute\n{eventId, channels[], contentUrls}
@@ -124,8 +123,6 @@ Service -> DB: 배포 이력 상태 업데이트\n(상태를 COMPLETED로,\n완
 Service -> Kafka: Publish to event-topic\nDistributionCompleted\n{eventId, channels[], results[], completedAt}
 note over Kafka: Analytics Service 구독\n실시간 통계 업데이트
 
-Service -> Cache: 배포 상태 캐싱\nkey: distribution:{eventId}\nvalue: {status: COMPLETED, results[]}\nTTL: 1시간
-
 == REST API 동기 응답 ==
 Service --> Controller: 배포 완료 응답\n{status: COMPLETED, successChannels: [all]}
 deactivate Service