Redis实现订单过期删除的方法步骤
前言
设计订单过期,不能单纯靠Redis,需要兜底策略
代码实现:
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.CollectionUtils;
import org.springframework.data.redis.core.ZSetOperations;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.Set;
import java.util.concurrent.TimeUnit;
@Service
@Slf4j
public class OrderRedisDelayQueueOperator extends AbstractOrderScheduleDelayQueue {
@Resource(name = “redisTemplate”)
private ZSetOperations<String, String> orderRedis;
/**
* 预售、现货生成订单15分钟后未支付,需要取消订单
*/
private static final String DELAY_QUEUE_NAME = “order”;
/**
* 每1秒执行一次
*/
@Override
@Scheduled(cron = “0/1 * * * * ? “)
public void orderEventProcess() {
if (!redisLock.tryLock(this.getClass().getSimpleName(), TimeUnit.MILLISECONDS, 10, 100)) {
return;
}
Set<String> dq = orderRedis.range(DELAY_QUEUE_NAME, 0L, Long.MAX_VALUE);
if (CollectionUtils.isEmpty(dq)) {
return;
}
for (String orderNo : dq) {
Double xs = orderRedis.score(DELAY_QUEUE_NAME, orderNo);
Double now = System.currentTimeMillis() * 1.0;
if (xs <= now) {
log.info(“{} timed out”, orderNo);
super.threadPoolTaskExecutor.execute(() -> {
CancelOrderReq req = new CancelOrderReq();
req.setOrderNo(orderNo);
req.setCancelType(OrderActionEnum.TIME_OUT_CANCEL);
orderService.cancelOrder(req);
});
} else {
//log.info(“{} no time out”, orderNo);
//如果最小的都没有过期,剩余的则不用处理了
break;
}
}
}
public void addToRedis(String orderNo, long delayTime) {
orderRedis.add(DELAY_QUEUE_NAME, orderNo, delayTime * 1.0);
}
public void removeFromRedis(String orderNo) {
orderRedis.remove(DELAY_QUEUE_NAME, orderNo);
}
}
兜底策略
* 取消订单–10分钟–20分钟执行一次
*/
@XxlJob(“cancelOrder20Minutes”)
public void cancelOrderTenMinutes() {
log.info(“*****[开始:下单十分钟以后系统自动取消订单]*****”);
Date start = DateUtil.dateRoll(new Date(), Calendar.MINUTE,-20);
Date end = new Date();
List<ClOrder> clorderList =clOrderMapper.selectListAllOrdrWaiting(start,end);
if(ObjectUtil.isNotEmpty(clorderList)){
for(int i=0;i<clorderList.size();i++){
ClOrder clOrder = clorderList.get(i);
if(ObjectUtil.isNotEmpty(clOrder)){
Date orderTime = clOrder.getOrderTime();
long between = cn.hutool.core.date.DateUtil.between(orderTime, new Date(), DateUnit.MINUTE);
if(between>10){
ClOrder clOrderTemp = new ClOrder();
clOrderTemp.setOrderState(“3″);
clOrderTemp.setId(clOrder.getId());
clOrderTemp.setMemberId(clOrder.getMemberId());
String msg=”您的订单已经取消,订单金额已发放至您的账户请查收~”;
try {
boolean b = orderService.cancelOrder(clOrderTemp,msg);
if(!b){
log.info(“[订单失效:定时任务兜底策略更新失败]**订单ID: {}”,clOrderTemp.getId());
}
log.info(“[Redis订单取消订单失效,定时任务兜底策略生效]”);
}catch (Exception e){
log.info(“[订单失效:定时任务兜底策略更新失败]**订单ID: {}”,clOrderTemp.getId());
e.printStackTrace();
}
}
}
}
}
log.info(“*****[结束:下单十分钟以后系统自动取消订单]*****”);
}
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