feat: 初始提交

backend/app/models/user_daily_request.py

@@ -0,0 +1,18 @@
+from datetime import date
+
+from sqlalchemy import Date, ForeignKey, Integer, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column
+
+from ..db.base import Base
+
+
+class UserDailyRequest(Base):
+    """记录每位用户每日使用次数的限流表。"""
+
+    __tablename__ = "user_daily_requests"
+    __table_args__ = (UniqueConstraint("user_id", "request_date", name="uq_user_daily"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
+    request_date: Mapped[date] = mapped_column(Date, nullable=False)
+    request_count: Mapped[int] = mapped_column(Integer, default=0)