每天laravel-20160624|RateLimiter
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<?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}
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