Fafnir is a netcore library that helps your API to reject a bunch of incoming requests from the same origin.
Use the Nuget package manager console to install Fafnir
Install-Package Fafnir.Throttle.NetCoreor dotnet cli
dotnet add package Fafnir.Throttle.NetCoreAdd throttle service in Startup.ConfigureServices method
services.AddThrottle(Configuration);
and then add the following configuration in app settings.
"ThrottleConfiguration": {
"MaxRequests": 50,
"Period": "00:01:00",
"PenaltyTime": "00:05:00",
"ErrorMessage": "throttle custom message."
}or optionally configure through the 2nd overload
services.AddThrottle(
maxRequests: 50,
period: TimeSpan.FromMinutes(1),
penaltyTime: TimeSpan.FromMinutes(5),
errorMessage: "My Custom error.");
and then add UseThrottle method in Startup.Configure method
app.UseThrottle();
The configuration above will just allow to get through 50 requests from the same origin in a time window of 1 minute. If the amount of requests is exceeded, then the requester will get an error (Http status code 429) until the penalty of 5 minutes is completed.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.