功能：支持动态配置每日比价次数上限

app/api/v1/compare_record.py

@@ -38,13 +38,14 @@ router = APIRouter(prefix="/api/v1/compare", tags=["compare-record"])
 @router.post(
     "/start",
     response_model=CompareStartReserveOut,
-    summary="预占一次当日比价发起次数（每人每天最多100次）",
+    summary="预占一次当日比价发起次数（上限由风控监控配置）",
 )
 def reserve_compare_start(
     payload: CompareStartReserveIn,
     user: CurrentUser,
     db: DbSession,
 ) -> CompareStartReserveOut:
+    daily_limit = risk_repo.get_rule_threshold(db, risk_repo.RULE_COMPARE_DAILY)
     if risk_repo.is_restricted(
         db,
         subject_type="user",
@@ -57,25 +58,26 @@ def reserve_compare_start(
             db,
             user_id=user.id,
             trace_id=payload.trace_id,
+            daily_limit=daily_limit,
             business_type=payload.business_type,
             device_id=payload.device_id,
         )
     except crud_compare.DailyCompareStartLimitExceeded:
         raise HTTPException(
             status_code=status.HTTP_429_TOO_MANY_REQUESTS,
-            detail="今日已比价超过100次，请明天再试",
+            detail=f"今日已比价超过{daily_limit}次，请明天再试",
         ) from None
     except crud_compare.ComparisonTraceOwnershipError:
         raise HTTPException(
             status_code=status.HTTP_409_CONFLICT,
             detail="比价任务标识冲突，请重新发起",
         ) from None
-    # 风控阈值由后台动态配置，不能再只在固定的 100 次业务上限处同步。
+    # 告警和业务限流共用同一动态阈值，避免后台已修改但用户侧仍固定为 100 次。
     risk_repo.sync_compare_incident(db, user_id=user.id, at=rec.created_at)
     return CompareStartReserveOut(
-        limit=crud_compare.DAILY_COMPARE_START_LIMIT,
+        limit=daily_limit,
         used=used,
-        remaining=max(crud_compare.DAILY_COMPARE_START_LIMIT - used, 0),
+        remaining=max(daily_limit - used, 0),
     )