Example of WebApiConfig using WebApiThrottle

ExampleThrottling.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Web.Http;
using WebApiThrottle;

namespace WebApplication13
{
    public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            config.MessageHandlers.Add(new ThrottlingHandler()
            {
                Policy = new ThrottlePolicy(perSecond: 1, perMinute: 2)
                {
                    IpThrottling = true, //Configure o throttling por id
                    EndpointThrottling = true,//habilitado a diferenca por endpoint
                    ClientThrottling = true, //configura a throttling a partir do header Authorization-Token
                    //IpWhitelist = new List<string>() { }
                    //ClientWhitelist = new List<string>() { "2222"}
                    EndpointRules = new Dictionary<string, RateLimits>()
                    {
                        {"api/values/2", new RateLimits(){PerMinute = 1}}
                    },
                    StackBlockedRequests = true //armazena o count das requests bloqueadas
                },
                Repository = new CacheRepository()
            });
            // Web API configuration and services

            // Web API routes
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
        }
    }
}

//public class CustomThrottlingHandler : ThrottlingHandler
//{
//    protected override RequestIdentity SetIndentity(HttpRequestMessage request)
//    {
//        return new RequestIdentity()
//        {
//            ClientKey = request.Headers.GetValues("Rodolfo-Key").First(),
//            ClientIp = base.GetClientIp(request).ToString(),
//            Endpoint = request.RequestUri.AbsolutePath
//        };
//    }
//}