Redis简单实例
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2022-04-18 22:26:18
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<?php /** * Created by PhpStorm. * User: Perilla * Date: 2018/4/27 * Time: 9:13 */ namespace app\index\controller; /** * Class Reids * 作用:学习redis * 时间:2018年4月27日15:07:28 * (基础已迁移到extend/Reids) * * * 队列的rPop是具有原子性的,即使处理并发,也是一个个处理,不会出现重复和超卖的情况 * Set的特性是不能重复 * 用户抢购队列(List) * 商品队列(List) * 订单信息(Hash集合) * 购买成功用户(Set集合) */ class Reids{ private $reids; /** * 初始化一个reids */ public function __construct(\Redis $reids){ header("content-type:text/html;charset=utf-8"); $this->reids = $reids; $this->reids->connect('127.0.0.1',6379); if($this->reids->ping() == "+PONG"){ echo "reids 正常运行<br/>".PHP_EOL; }else{ echo "reids 开启失败<br/>".PHP_EOL; } } /** * 创建一个货物库 货物n个 */ public function goods($n){ $this->reids->delete('goodsLists'); $this->reids->delete('killsLists'); $this->reids->delete('ordersLists'); $this->reids->delete('usersLists'); for($i = 1;$i<=$n;$i++){ $this->reids->lpush('goodsLists',$i); } echo '进货成功,商品数:'.$this->reids->lsize('goodsLists'); } public function getkillsLists(){ $count = $this->reids->scard('killsLists'); $this->dumps("购买数量",$count); $arr = $this->reids->smembers('killsLists'); $this->dumps("购买清单",$arr); $length = $this->reids->lsize('goodsLists'); $this->dumps("商品剩余数量:",$length); $arr = $this->reids->hgetall('ordersLists'); $this->dumps("商品购买详情:",$arr); } /** * 秒杀过程 * usersLists 用户表(List) * goodsLists 货物表(List) * killsLists 秒杀成功表(Set集合) * ordersLists 订单表(Hash集合) */ public function kills(){ //查询库存 if($this->reids->lLen('goodsLists') == 0) { $this->dumps("商品已售完..."); exit; } //查询是否购买过 $uid = rand(100000,999999); if($this->reids->sIsMember('killsLists',$uid)){ $this->dumps('你已经购买过了!'); exit; } //购买 $goods_id = $this->reids->rpop('goodsLists'); if($goods_id){ $this->reids->sAdd('killsLists',$uid); $value = array( 'uid' => $uid, 'goods_id' => $goods_id, 'time' => time(), ); $this->reids->hSet('ordersLists',$uid,json_encode($value)); $this->dumps('购买成功。'); } } /** * 按一定规律打印一些数据 */ public function dumps($demo,$val = ""){ echo $demo.PHP_EOL; if($val){ dump($val); } echo PHP_EOL; } }
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