Redis实现每日签到功能(大数据量)

<?php
class Sign
{
    private $link;
    private static $signList = 'signDay';
    public function __construct()
    {
        $this->link = $this->connect();
    }
    private function connect()
    {
        $redis = new \Redis();
        $host = '127.0.0.1'; // Redis服务器地址
        $port = 6379;        // Redis端口号，默认是6379
        $timeout = 0;        // 连接超时时间（可选，默认为0，代表无超时，单位秒）
        $redis->connect($host, $port, $timeout);
        return $redis;
    }
    /**
     * 进行签到
     * @return bool
     */
    public function addDay()
    {
        // 判断今日是否签到
        $nowD = date('d');
        $isSign = $this->isSign($nowD-1);
        if (!in_array($isSign, ['0', '1'], true)) {
            // 进行签到
            return $this->link->append(self::$signList, '1');
        }
        return true;
    }
    /**
     * 获取签到列表
     * @return string
     */
    public function getDayList()
    {
        return $this->link->getRange(self::$signList, 0, -1);
    }
    /**
     * 对指定日期进行补签
     * @param string $d
     * @return bool|int
     */
    public function repairDay(string $d)
    {
        $nowDay = date('d');
        if ($nowDay == $d) {
            return $this->addDay();
        }
        // 判断补签日期是否已签到
        $offset = $d - 1;
        if ($this->isSign($offset)) {
            return true;
        }
        return $this->link->setRange(self::$signList, $offset, 1);
    }
    /**
     * 是否签到
     * @param $offset:偏移量
     * @return string
     */
    private function isSign($offset)
    {
        return $this->link->getRange(self::$signList, $offset, $offset);
    }
    public function __destruct()
    {
        $this->link->close();
    }
}

<?php
require_once './Sign.php';
$obj = new Sign();
// 签到
$info = $obj->addDay();
// 补签 本月6号的记录
$info = $obj->repairDay('6');
// 获取签到列表
$dayList = $obj->getDayList();
print_r(str_split($dayList, 1));