TP5 uses Redis to handle e-commerce flash sales

This article introduces how ThinkPHP uses Redis to implement e-commerce flash sales. It has certain reference value. I hope it will be helpful to friends who are learning ThinkPHP!

TP5 uses Redis to handle e-commerce flash sales

1. First, create the Redis class library file required for the rush sale activity in TP5 , the code is as follows:

checkLock("dataExists") && !$this->checkTableDataExists()){ throw new Exception("相关产品数据不存在"); }else{ //设置检查锁10分钟 $this->setLock("dataExists",600); } //如果数据不存在 初始化读取数据 if (!$this->checkExists()){ $this->initTableData(); } } public function getScheduleCenter() { return Schedule::instance( $this->getInfoFieldValue("schedule_id")); } public function __destruct() { //设置15天自动回收redis $this->setExpire((int); $this>getScheduleCenter()->getInfoFieldValue("end_time")+3600*24*15); } }

2. Process the rush buying logic in the service layer or controller, the code is as follows:

public function index($data=["user_id"=>1,"ticket_detail_id"=>1,"buy_num"=>1]){ try { //检测数据存在 if (!$this->checkArrayValueEmpty($data,["user_id","ticket_detail_id","buy_num"])){ throw new Exception($this->error); } $user_id= $data["user_id"] ; //用户Id $ticket_detail_id = $data["ticket_detail_id"] ; //产品Id $buy_num = $data["buy_num"] ; //购买数量 $infoCenter= ScheduleDetail::instance( $ticket_detail_id ); $scheduleDetailInfo =$infoCenter->getInfoList(); //修改数据库后 需要运行initTableData()方法重新初始化 推荐写到Hook里 // $infoCenter->initTableData(); if ( $infoCenter->getInfoFieldValue( "hot_schedule")){ //热门抢购随机过滤随机过滤 if (!in_array(rand(100, 200) % 11, [1, 3, 5, 7, 9])) { throw new Exception("抢票人数众多 ,你被挤出抢购队伍,还有余票,请重新再抢"); }; } // 这里判断 购买数量和销售日期 不符合就 throw new Exception if (!true){ throw new Exception("这里写不符合原因"); } if (((int)$infoCenter->getInfoFieldValue("{$user_id}_num")+$buy_num)>$scheduleDetailInfo["limit_num"] ){ throw new Exception("你超过最大购买数量"); } if ($infoCenter->setInfoFieldIncre("pay_num",$buy_num) >$scheduleDetailInfo["limit_num"] ){ // $infoCenter->setInfoFieldIncre("pay_num", -$buy_num); throw new Exception("对不起,票已经卖光了!"); } //这里写主逻辑 启用事务功能创建订单 //事务参见下节源码 //升级已销售数量 $infoCenter->updateTableData(["pay_num"]); //在这里推荐埋钩子 处理订单完成的后续事情 //返回结果 } catch (Exception $e) { Log::error($e->getMessage()); return ShowCode::jsonCodeWithoutData(1008, $e->getMessage()); } } }

In the processing logic, you can use randomly removed part of the purchase request to ensure the rush buying activity Smooth completion

Of course, you can also use a similar method to filter in the front-end request at the same time

You can refer to the timing queue to determine whether the order has been processed and calibrate the remaining inventory

(Recommended tutorial:thinkphp tutorial)

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