下面介绍两种方法

zset

function uuid(){
    $str = "123456790abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    $uuid = "";
    for ($i = 0; $i < 10; $i++) {
        $uuid .= $str[mt_rand(0, strlen($str) - 1)];
    }
    return $uuid;
}

$time = time();
$key='limit:100';
$val = uuid();

$redis = new Redis();
$redis->connect("docker-redis", 6379);
$ret = $redis->multi(2)
    ->zRemRangeByScore($key, 0, $time - 60)
    ->zAdd($key, time(), $val)
    ->zCard($key)
    ->exec();

if ($ret[2] > 10) {
    echo 'false, 每分钟最多访问10次';
    return false;
}
echo 'ok';

redis-cell

Redis 4.0提供了一个限流Redis模块，称为Redis-Cell。该模块使用了漏斗算法，并提供了原子的限流指定。

https://github.com/brandur/redis-cell/releases/download/v0.3.0/redis-cell-v0.3.0-x86_64-unknown-linux-gnu.tar.gz

vi redis.conf
loadmodule /data/modules/libredis_cell.so

root@3afcc7091943:/data# redis-cli
127.0.0.1:6379> CL.THROTTLE user123 15 30 60 1


CL.THROTTLE user123 15 30 60 1
               ▲     ▲  ▲  ▲ ▲
               |     |  |  | └───── apply 1 token (default if omitted)
               |     |  └──┴─────── 30 tokens / 60 seconds
               |     └───────────── 15 max_burst
               └─────────────────── key "user123"


$redis = new Redis();
$redis->connect("docker-redis", 6379);
//10次1秒
for($i=0;$i<120;$i++) {
    $ret = $redis->rawCommand("CL.THROTTLE", 'limit', 100, 10, 1, 1);
    echo date('Y-m-d H:i:s').': '.($ret[0]===0?'pass':'no').PHP_EOL;
}