详解PHP接口访问频率限制

时间：2021-04-12加入收藏

/**

* @param $uid

* @return bool|int

* 检测用户接口访问频率

*/

function api_frequency_visits ($uid) {

$key = "user:{$uid}:api:frequency";

$redis = new Redis();

$redis->connect('127.0.0.1');

$data = $redis->hGetAll($key);

//需要删除的key

$del_key = [];

//时间内访问的总次数

$total = 0;

//时间内最大访问次数

$max_frequency = 10;

//当前时间

$now_time = time();

//限制时间

$limit_time = 60;

foreach ($data as $time=>$count) {

if ($time < $now_time - $limit_time) {

$del_key[] = $time;

} else {

$total += $count;

}

}

//存在需要删除的key

if ($del_key) {

$redis->hDel($key, ...$del_key);

}

if ($total >= $max_frequency) {

return false;

}

return $redis->hIncrBy($key, $now_time, 1);

}

$uid = 1;

$result = api_frequency_visits($uid);

if (!$result) {

echo json_encode(['code'=>0, 'msg'=>'操作过于频繁', 'data'=>[]]);die;

}

echo json_encode(['code'=>1, 'msg'=>'', 'data'=>[

'uid'=>$uid,

'other'=>rand()

]]);die;