Initial commit: AutonetSellCar platform with deployment system

- Frontend: Next.js 14 with TypeScript
- Backend: FastAPI with SQLAlchemy
- Agent: Carmodoo sync agent
- Deployment: Docker Compose based staging/production setup
- Scripts: Automated deployment with rollback support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/app/models/cache.py

@@ -0,0 +1,75 @@
+"""
+캐시 모델 - 카모두 검색 결과 캐싱
+"""
+from sqlalchemy import Column, Integer, String, DateTime, Text, Index
+from sqlalchemy.sql import func
+from ..database import Base
+
+
+class CarCache(Base):
+    """
+    검색 결과 캐시 테이블 (Maker + Model 단위)
+    캐시 키: maker_code_model_code (예: "2_38" = 기아_K5)
+    """
+    __tablename__ = "car_cache"
+
+    id = Column(Integer, primary_key=True, index=True)
+    cache_key = Column(String(50), unique=True, nullable=False, index=True)
+
+    maker_code = Column(String(10), nullable=False)
+    maker_name = Column(String(100), nullable=False)
+    model_code = Column(String(10), nullable=False)
+    model_name = Column(String(100), nullable=False)
+
+    total_count = Column(Integer, nullable=False, default=0)
+    cars_data = Column(Text, nullable=False)  # JSON: 전체 차량 목록
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+    expires_at = Column(DateTime(timezone=True), nullable=False)
+
+    __table_args__ = (
+        Index('idx_car_cache_expires', 'expires_at'),
+        Index('idx_car_cache_maker_model', 'maker_code', 'model_code'),
+    )
+
+
+class CarDetailCache(Base):
+    """
+    개별 차량 상세 정보 캐시 테이블
+    """
+    __tablename__ = "car_detail_cache"
+
+    id = Column(Integer, primary_key=True, index=True)
+    car_id = Column(String(50), unique=True, nullable=False, index=True)  # 카모두 차량 ID
+
+    detail_data = Column(Text, nullable=False)  # JSON: 상세 정보
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+    expires_at = Column(DateTime(timezone=True), nullable=False)
+
+    __table_args__ = (
+        Index('idx_car_detail_cache_expires', 'expires_at'),
+    )
+
+
+class CacheRequestQueue(Base):
+    """
+    캐시 요청 대기열 - 동일 조건 요청 병합용
+    """
+    __tablename__ = "cache_request_queue"
+
+    id = Column(Integer, primary_key=True, index=True)
+    cache_key = Column(String(50), nullable=False, index=True)
+    status = Column(String(20), nullable=False, default='pending')  # pending, processing, completed, failed
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    started_at = Column(DateTime(timezone=True))
+    completed_at = Column(DateTime(timezone=True))
+
+    error_message = Column(Text)
+
+    __table_args__ = (
+        Index('idx_cache_request_status', 'status', 'cache_key'),
+    )