Polly Rate Limiting with Retry

PollyRateLimiter.cs

using Polly;
using Polly.RateLimit;
// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");


var task = (int i) => Console.WriteLine($"Firing {i}");

var rateLimit = Policy.RateLimitAsync(10, TimeSpan.FromMinutes(1), 5);

var retry = Policy
    .Handle<RateLimitRejectedException>()
    .WaitAndRetryAsync(
        1000,
        sleepDurationProvider: (_, ex, _) => ex switch
        {
            RateLimitRejectedException r => r.RetryAfter,
            _ => TimeSpan.FromSeconds(1)
        },
        onRetryAsync: (_, ts, _, ctx) => {
            Console.WriteLine($"Rate limiting {ts}...");
            return Task.CompletedTask;
        }
    );


foreach (var i in Enumerable.Range(0, 100))
{
    await retry.WrapAsync(rateLimit).ExecuteAsync(() => { task(i); return Task.CompletedTask; });
}