php API访问通过redis控制频率限制

解决方法：直接上代码

需要提前安装扩展

composer require predis/predis

/** * API访问频率限制简单处理 */ 
require_once 'vendor/autoload.php'; 
$redis = new PredisClient ( 'tcp://127.0.0.1:6379' ); 
// 测试key 
$clientKey = "api_count:client_id:" . date ( 'YmdHi' ); // 
限制时间为1分钟 $seconds = '60'; 
// 限制次数为20次 
$count = 20; 
//不存在key 
if (! $redis--->get ( $clientKey )) {
    $redis->set ( $clientKey, 0 );
    $redis->expire ( $clientKey, $seconds );
}

//访问频率监控
$accessCount = $redis->incr ( $clientKey );
if ($accessCount > $count) {
    echo "[WARING]:访问超过限制次数";
} else {
    $remainingTime = $redis->ttl ( $clientKey );
    echo "{$clientKey}  剩余时间:{$remainingTime}s  访问次数为:{$accessCount}";
}