欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  后端开发

Redis简单实例

程序员文章站 2022-04-11 14:13:17
...
这篇文章主要介绍了关于Redis简单实例,有着一定的参考价值,现在分享给大家,有需要的朋友可以参考一下
<?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;
    }
}

相关推荐:

PHP操作Redis常用技巧

CI框架(CodeIgniter)操作redis的方法

以上就是Redis简单实例的详细内容,更多请关注其它相关文章!