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<?php
declare(strict_types=1);
namespace RateLimit;
use RateLimit\Exception\LimitExceeded;
final class InMemoryRateLimiter implements RateLimiter, SilentRateLimiter
{
/** @var array */
private $store = [];
public function limit(string $identifier, Rate $rate): void
$key = $this->key($identifier, $rate->getInterval());
$current = $this->hit($key, $rate);
if ($current > $rate->getOperations()) {
throw LimitExceeded::for($identifier, $rate);
}
public function limitSilently(string $identifier, Rate $rate): Status
return Status::from(
$identifier,
$current,
$rate->getOperations(),
$this->store[$key]['reset_time']
);
private function key(string $identifier, int $interval): string
return "$identifier:$interval:" . floor(time() / $interval);
private function hit(string $key, Rate $rate): int
if (!isset($this->store[$key])) {
$this->store[$key] = [
'current' => 1,
'reset_time' => time() + $rate->getInterval(),
];
} elseif ($this->store[$key]['current'] <= $rate->getOperations()) {
$this->store[$key]['current']++;
return $this->store[$key]['current'];
nikolaposa /
rate-limit
