I'm writing an application that connects to another HTTP service. I want to rate-limit my outgoing requests to that external service.
Ideally, I want to use the standard resilience handler as documented here, to benefit from the configured best-practice defaults when it comes to resiliency.
services.AddHttpClient<ExternalServiceGateway>() .AddStandardResilienceHandler();However, since I know that the external service is rate-limited to 120 req/sec, I want to apply a similar policy to my outgoing calls.
I can achieve this using a separately-configured ResiliencePipeline (see below), but I want to combine this with the AddStandardResilienceHandler(). Is there any way to achieve this?
var pipeline = new ResiliencePipelineBuilder() .AddRetry(new RetryStrategyOptions { ShouldHandle = new PredicateBuilder().Handle<RateLimiterRejectedException>(), Delay = TimeSpan.FromSeconds(1), MaxRetryAttempts = 5, BackoffType = DelayBackoffType.Exponential, UseJitter = true }) .AddRateLimiter(new FixedWindowRateLimiter(new FixedWindowRateLimiterOptions() { PermitLimit = 2, Window = TimeSpan.FromSeconds(1) })) .Build();Update: example code for problem/solution
I have published a minimal solution to experiment with this problem/solution here.