redis-cli set miaosha_key 100
下面是伪代码
<?php
$redis = Redis::getClient();
$key = 'miaosha_key';
$key_r = $redis->decr($key); //最关键
if ($key_r < 0) {
echo json_encode(['code' => 0, 'msg' => '已经被抢光']);
} else {
//抢到了
//队列或者直接保存数据库
echo json_encode(['code' => 1, 'msg' => '抢到了']);
}