每天laravel-20160624|RateLimiter

<?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}