这篇文章主要介绍“Redis如何实现订单过期删除”，在日常操作中，相信很多人在Redis如何实现订单过期删除问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Redis如何实现订单过期删除”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
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 com.coolplay.trade.dto.req.CancelOrderReq;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@Slf4jpublic class OrderRedisDelayQueueOperator extends AbstractOrderScheduleDelayQueue { @Resource(name = "redisTemplate") private ZSetOperations<String, String> orderRedis; private static final String DELAY_QUEUE_NAME = "order"; @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
@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]*****"); }到此，关于“Redis如何实现订单过期删除”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注编程网网站，小编会继续努力为大家带来更多实用的文章！
