不限制挂单时间

strategy/src/strategy.rs

@@ -201,7 +201,7 @@ impl Strategy {
             trade_vol_24h_w: Default::default(),
             grid: Decimal::from(params.grid),
             prev_place_order_timestamp: 0,
-            min_cancel_interval_mills: 500,
+            min_cancel_interval_mills: 0,
         };
 
         // 交易名字