秒杀优化

mall_modules/mall_server/src/main/java/com/mall/server/monitor/SpikesMonitor.java

@@ -4,6 +4,7 @@ import com.alibaba.fastjson.JSON;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.mall.common.domain.OrderItemEntity;
 import com.mall.server.config.DelayConfig;
+import com.mall.server.config.MqConfig;
 import com.mall.server.constant.SpikesConstant;
 import com.mall.server.service.OrderItemService;
 import com.rabbitmq.client.Channel;
@@ -48,7 +49,39 @@ public class SpikesMonitor {
         try {
             channel.basicAck(deliveryTag,false);
         } catch (IOException e) {
-            throw new RuntimeException(e);
+            try {
+                if(deliveryTag<3){
+                    Thread.sleep(3000);
+                    channel.basicNack(deliveryTag,false,true);
+                }else {
+                    channel.basicNack(deliveryTag,false,false);
+                }
+            } catch (Exception ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+    }
+
+    @RabbitListener(queues = MqConfig.DXQUEUE)
+    public void orderConsumer(String meg, Message message, Channel channel){
+        log.info("下订单"+meg);
+        long deliveryTag = message.getMessageProperties().getDeliveryTag();
+
+        orderItemService.save(JSON.parseObject(meg,OrderItemEntity.class));
+
+        try {
+            channel.basicAck(deliveryTag,false);
+        } catch (IOException e) {
+            try {
+                if(deliveryTag<3){
+                    Thread.sleep(3000);
+                    channel.basicNack(deliveryTag,false,true);
+                }else {
+                    channel.basicNack(deliveryTag,false,false);
+                }
+            } catch (Exception ex) {
+                throw new RuntimeException(ex);
+            }
         }
     }
 

mall_modules/mall_server/src/main/java/com/mall/server/service/impl/SpikesServiceImpl.java

@@ -1,6 +1,5 @@
 package com.mall.server.service.impl;
 
-import com.alibaba.fastjson.JSON;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.mall.common.constant.TokenConstants;
@@ -14,6 +13,7 @@ import com.mall.common.result.Result;
 import com.mall.common.utils.IdUtils;
 import com.mall.common.utils.StringUtils;
 import com.mall.server.config.DelayConfig;
+import com.mall.server.config.MqConfig;
 import com.mall.server.constant.SpikesConstant;
 import com.mall.server.domain.SkuEntity;
 import com.mall.server.domain.SpikesEntity;
@@ -21,12 +21,10 @@ import com.mall.server.mapper.SpikesMapper;
 import com.mall.server.service.OrderItemService;
 import com.mall.server.service.SkuService;
 import com.mall.server.service.SpikesService;
-import com.mall.server.service.SpuService;
 import org.redisson.api.RSemaphore;
 import org.redisson.api.RedissonClient;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -69,6 +67,7 @@ public class SpikesServiceImpl extends ServiceImpl<SpikesMapper, SpikesEntity>
 
     /**
      * 添加秒杀信息
+     *
      * @param spikesRequest
      * @return
      */
@@ -147,6 +146,7 @@ public class SpikesServiceImpl extends ServiceImpl<SpikesMapper, SpikesEntity>
 
     /**
      * 秒杀
+     *
      * @param skuId
      * @return
      */
@@ -173,8 +173,7 @@ public class SpikesServiceImpl extends ServiceImpl<SpikesMapper, SpikesEntity>
             throw new BizException(500, "系统繁忙,商品已抢购完");
         }
         String orderSn = IdUtils.genId();
-        orderItemService.save(
-                OrderItemEntity.builder()
+        OrderItemEntity orderItem = OrderItemEntity.builder()
                 .userId(login.getId())
                 .orderSn(orderSn)
                 .skuId(skuId)
@@ -185,8 +184,14 @@ public class SpikesServiceImpl extends ServiceImpl<SpikesMapper, SpikesEntity>
 //                        .couponAmount()
 //                        .integrationAmount()
                 .realAmount(skuEntity.getActivityPrice())
-                        .status(0).build()
-        );
+                .status(0).build();
+        //异步下订单
+        rabbitTemplate.convertAndSend(MqConfig.DXEXCHANGE, MqConfig.ROUTINGKEY, orderItem.toString(),
+                message -> {
+                    message.getMessageProperties().setMessageId(IdUtils.genId());
+                    return message;
+                });
+
         rabbitTemplate.convertAndSend(
                 DelayConfig.EXCHANGE, DelayConfig.ROUKEYCZK, skuId + "," + orderSn,
                 message -> {