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    <h3>Editing: ThrottleRequestsWithRedis.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Routing\Middleware;

use Closure;
use Illuminate\Cache\RateLimiter;
use Illuminate\Contracts\Redis\Factory as Redis;
use Illuminate\Redis\Limiters\DurationLimiter;

class ThrottleRequestsWithRedis extends ThrottleRequests
{
    /**
     * The Redis factory implementation.
     *
     * @var \Illuminate\Contracts\Redis\Factory
     */
    protected $redis;

    /**
     * The timestamp of the end of the current duration by key.
     *
     * @var array
     */
    public $decaysAt = [];

    /**
     * The number of remaining slots by key.
     *
     * @var array
     */
    public $remaining = [];

    /**
     * Create a new request throttler.
     *
     * @param  \Illuminate\Cache\RateLimiter  $limiter
     * @param  \Illuminate\Contracts\Redis\Factory  $redis
     * @return void
     */
    public function __construct(RateLimiter $limiter, Redis $redis)
    {
        parent::__construct($limiter);

        $this-&gt;redis = $redis;
    }

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @param  array  $limits
     * @return \Symfony\Component\HttpFoundation\Response
     *
     * @throws \Illuminate\Http\Exceptions\ThrottleRequestsException
     */
    protected function handleRequest($request, Closure $next, array $limits)
    {
        foreach ($limits as $limit) {
            if ($this-&gt;tooManyAttempts($limit-&gt;key, $limit-&gt;maxAttempts, $limit-&gt;decayMinutes)) {
                throw $this-&gt;buildException($request, $limit-&gt;key, $limit-&gt;maxAttempts, $limit-&gt;responseCallback);
            }
        }

        $response = $next($request);

        foreach ($limits as $limit) {
            $response = $this-&gt;addHeaders(
                $response,
                $limit-&gt;maxAttempts,
                $this-&gt;calculateRemainingAttempts($limit-&gt;key, $limit-&gt;maxAttempts)
            );
        }

        return $response;
    }

    /**
     * Determine if the given key has been &quot;accessed&quot; too many times.
     *
     * @param  string  $key
     * @param  int  $maxAttempts
     * @param  int  $decayMinutes
     * @return mixed
     */
    protected function tooManyAttempts($key, $maxAttempts, $decayMinutes)
    {
        $limiter = new DurationLimiter(
            $this-&gt;redis, $key, $maxAttempts, $decayMinutes * 60
        );

        return tap(! $limiter-&gt;acquire(), function () use ($key, $limiter) {
            [$this-&gt;decaysAt[$key], $this-&gt;remaining[$key]] = [
                $limiter-&gt;decaysAt, $limiter-&gt;remaining,
            ];
        });
    }

    /**
     * Calculate the number of remaining attempts.
     *
     * @param  string  $key
     * @param  int  $maxAttempts
     * @param  int|null  $retryAfter
     * @return int
     */
    protected function calculateRemainingAttempts($key, $maxAttempts, $retryAfter = null)
    {
        return is_null($retryAfter) ? $this-&gt;remaining[$key] : 0;
    }

    /**
     * Get the number of seconds until the lock is released.
     *
     * @param  string  $key
     * @return int
     */
    protected function getTimeUntilNextRetry($key)
    {
        return $this-&gt;decaysAt[$key] - $this-&gt;currentTime();
    }
}
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