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결제 전환 목표 아키텍처 정의 (1/2) (SPRING-ARC-REVIEW-1783835414)

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docs/architecture/transaction-sequence.md
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@ -1,32 +1,21 @@
```mermaid ```mermaid
sequenceDiagram sequenceDiagram
participant User participant A as User
participant PaymentGateway participant B as Payment Processor
participant PaymentService participant C as External Gateway
participant Database A->>B: 결제 요청
B->>C: 결제 정보 전달
User->>+PaymentService: Start Payment alt 성공
PaymentService->>+PaymentGateway: Process Payment C-->>B: 성공 응답
PaymentGateway-->>-PaymentService: Payment Success B-->>A: 결제 완료
PaymentService->>Database: Record Payment note right of A: 결제 성공 처리
Database-->>-PaymentService: Payment Recorded else 외부 실패
PaymentService-->>-User: Payment Confirmed C-->>B: 실패 응답
B-->>A: 결제 실패
%% External Failure note right of A: 실패 처리 및 재시도
User->>+PaymentService: Start Payment else DB 실패
PaymentService->>+PaymentGateway: Process Payment B->>B: 롤백 처리
PaymentGateway-->>-PaymentService: Payment Failed B-->>A: 결제 실패
PaymentService-->>-User: Payment Failed note right of A: 롤백 기록
end
%% DB Failure
User->>+PaymentService: Start Payment
PaymentService->>+PaymentGateway: Process Payment
PaymentGateway-->>-PaymentService: Payment Success
PaymentService->>Database: Record Payment
Database-->>-PaymentService: DB Failure
PaymentService-->>-User: Payment Processing Error
%% Commit/Rollback
Note over PaymentService: Commit if successful
Note over PaymentService: Rollback if there's an error
``` ```