How to throttle requests in a Web Api?

Question

I\'m trying to implement request throttling via the following:

Best way to implement request throttling in ASP.NET MVC?

I\'ve pulled that code into my solut

Answer 1

I am using ThrottleAttribute to limit the calling rate of my short-message sending API, but I found it not working sometimes. API may been called many times until the throttle logic works, finally I am using System.Web.Caching.MemoryCache instead of HttpRuntime.Cache and the problem seems to solved.

if (MemoryCache.Default[key] == null)
{
    MemoryCache.Default.Set(key, true, DateTime.Now.AddSeconds(Seconds));
    allowExecute = true;
}