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nikolaposa/rate-limit

nikolaposa/rate-limit

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Last Updated: 2023-04-20 00:12:07

#rate-limit #rate-limiting #redis

🚔 General purpose rate limiter implementation.

License: MIT License

Languages: PHP

Rate Limit

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General purpose rate limiter that can be used to limit the rate at which certain operation can be performed. Default implementation uses Redis as backend.

Installation

The preferred method of installation is via Composer. Run the following command to install the latest version of a package and add it to your project's composer.json:

composer require nikolaposa/rate-limit

Usage

Terminating rate limiter

use RateLimit\Exception\LimitExceeded;
use RateLimit\Rate;
use RateLimit\RedisRateLimiter;
use Redis;

$rateLimiter = new RedisRateLimiter(Rate::perMinute(100), new Redis());

$apiKey = 'abc123';

try {
    $rateLimiter->limit($apiKey);
    
    //on success
} catch (LimitExceeded $exception) {
   //on limit exceeded
}

Silent rate limiter

use RateLimit\Rate;
use RateLimit\RedisRateLimiter;
use Redis;

$rateLimiter = new RedisRateLimiter(Rate::perMinute(100), new Redis());

$ipAddress = '192.168.1.2';
$status = $rateLimiter->limitSilently($ipAddress);

echo $status->getRemainingAttempts(); //99

Practical usage with configuring multiple rate limiting strategies in a project

use RateLimit\Rate;
use RateLimit\RedisRateLimiter;

$container->set('rate_limiter.api', new RedisRateLimiter(Rate::perSecond(10), $container->get('redis')));
$container->set('rate_limiter.videos', new RedisRateLimiter(Rate::perDay(5), $container->get('redis')));

Supported drivers

Credits

License

Released under MIT License - see the License File for details.

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