河南省人大常委会_小说网站源码_四年级说新闻2023_开鲁seo网站

<?phpclass FreqControl
{private $redis;private $max_freq;public function __construct($redis_client, $max_freq){$this->redis = $redis_client;$this->max_freq = $max_freq;}public function get_freq($key_name, $time_unit = 'minute'){// 构建Redis键名$redis_key = "{$key_name}:{$time_unit}";// 尝试从Redis获取值$value = $this->redis->get($redis_key);// 如果值不存在或为null，返回0；否则返回转换成整数的值return $value !== null ? (int)$value : 0;}public function increment_freq($key_name, $time_unit = 'minute'){$key = "{$key_name}:{$time_unit}";$pipe = $this->redis->multi();$pipe->incr($key);if ($time_unit === 'minute') {$pipe->expire($key, 60);} elseif ($time_unit === 'hour') {$pipe->expire($key, 3600);}return $pipe->exec();}public function set_freq($key_name, $value, $time_unit = 'minute'){$key = "{$key_name}:{$time_unit}";$ttl = $this->redis->ttl($key);// 使用 MULTI/EXEC 块来确保原子性$pipe = $this->redis->multi();$pipe->set($key, $value);// 如果键存在并有TTL，则保留它if ($ttl > 0) {$pipe->expire($key, $ttl);} else {// 为新键设置默认的60秒TTL$pipe->expire($key, 60);}return $pipe->exec();}public function is_freq_exceeded($key_name, $time_unit = 'minute'){$current_freq = $this->get_freq($key_name, $time_unit);$max_freq = (int)($this->max_freq ?? 0);return $current_freq >= $max_freq;}public function control_freq($key_name, $time_unit = 'minute'){if ($this->is_freq_exceeded($key_name, $time_unit)) {return false; // 超过频率限制，不允许访问} else {$current_freq = $this->get_freq($key_name, $time_unit);if (!$current_freq) {$this->increment_freq($key_name, $time_unit);} else {$this->set_freq($key_name, ($current_freq + 1), $time_unit);}return true; // 允许访问}}
}

使用方法
 

  $redis = new Redis();$redis->connect('127.0.0.1');// 选择数据库，例如数据库3$redis->select(4);$max_freq = 130;$freqControl = new FreqControl($redis, $max_freq);$key_name = $tongjiIp;if ($WXAPPOPENID) {$key_name = $tongjiIp . '_' . $WXAPPOPENID;}if ($freqControl->control_freq($key_name) == false) {json('请求频繁，请稍后再试', 200, 'error');}