RateLimitSharp

Simple rate limiters for resources in C#.

This library was created in response to the over-engineered rate limiters in System.Threading.RateLimiting.

Types

The recommended rate limiter for most cases is IncrementalTokenBucketKeyedRateLimiter.

ManualKeyedRateLimiter

A rate limiter per key that you replace manually.

using ManualKeyedRateLimiter rateLimiter = new(limit: 3); // Add a claim for John Doe. bool available = rateLimiter.TryIncrease("John Doe"); // Remove a claim from John Doe. rateLimiter.Decrease("John Doe");

TokenBucketKeyedRateLimiter

A rate limiter per key that automatically decreases claims a fixed interval after being increased.

using TokenBucketKeyedRateLimiter rateLimiter = new(limit: 3, interval: TimeSpan.FromSeconds(1.0)); // Add two claims for John Doe. bool available = rateLimiter.TryIncrease("John Doe", amount: 2); // All claims will be removed after 1 second.

IncrementalTokenBucketKeyedRateLimiter

A rate limiter per key that automatically decreases claims gradually over the period of the interval.

using IncrementalTokenBucketKeyedRateLimiter rateLimiter = new(limit: 3, interval: TimeSpan.FromSeconds(1.0)); // Add two claims for John Doe. bool available = rateLimiter.TryIncrease("John Doe", amount: 2); // All claims will be removed gradually over the course of 1 second.