毎日の laravel-20160624|レートリミッター

<?phpnamespace Illuminate\Cache;use Illuminate\Contracts\Cache\Repository as Cache;// declare namespaceclass RateLimiter{// RateLimiter    /**     * The cache store implementation.     *     * @var \Illuminate\Contracts\Cache\Repository     */    protected $cache;// a interface instance    /**     * Create a new rate limiter instance.     *     * @param  \Illuminate\Contracts\Cache\Repository  $cache     * @return void     */    public function __construct(Cache $cache)    {        $this->cache = $cache;    }// a big set to init a class, instance about cache.    /**     * Determine if the given key has been "accessed" too many times.     * Determine whether to add many times     * @param  string  $key     * @param  int  $maxAttempts     * @param  int  $decayMinutes     * @return bool     */    public function tooManyAttempts($key, $maxAttempts, $decayMinutes = 1)// increment too Many Attempts    {        if ($this->cache->has($key.':lockout')) {            return true;        }// check lockout,        if ($this->attempts($key) > $maxAttempts) {            $this->cache->add($key.':lockout', time() + ($decayMinutes * 60), $decayMinutes);            return true;        }// to change the access weight        return false;    }// done is to back true, or back false    /**     * Increment the counter for a given key for a given decay time.     *     * @param  string  $key     * @param  int  $decayMinutes     * @return int     */    public function hit($key, $decayMinutes = 1)    {        $this->cache->add($key, 1, $decayMinutes);        return (int) $this->cache->increment($key);    }// to add a increment time, increment   // this is hit function to change time    /**     * Get the number of attempts for the given key.     *     * @param  string  $key     * @return mixed     */    public function attempts($key)    {        return $this->cache->get($key, 0);    }// get value by key    /**     * Get the number of retries left for the given key.     *     * @param  string  $key     * @param  int  $maxAttempts     * @return int     */    public function retriesLeft($key, $maxAttempts)    {        $attempts = $this->attempts($key);// try to get value        return $attempts === 0 ? $maxAttempts : $maxAttempts - $attempts + 1;    }// a retirsleft ,a left times    /**     * Clear the hits and lockout for the given key.     *     * @param  string  $key     * @return void     */    public function clear($key)    {        $this->cache->forget($key);        $this->cache->forget($key.':lockout');    }// clear the hit and forget key and forget an shadow key,that is $key.:lockout    /**     * Get the number of seconds until the "key" is accessible again.     *     * @param  string  $key     * @return int     */    public function availableIn($key)    {        return $this->cache->get($key.':lockout') - time();    }// has the time back, get the can be used times}