rate limit in web api

Hi @mp2022ms2,

I think the WebApiThrottle library should meet your needs.

https://github.com/stefanprodan/WebApiThrottle

ASP.NET Web API Throttling handler, OWIN middleware and filter are designed to control the rate of requests that clients can make to a Web API based on IP address, client API key and request route. WebApiThrottle package is available on NuGet at nuget.org/packages/WebApiThrottle.

config.MessageHandlers.Add(new ThrottlingHandler()
{
    // Generic rate limit applied to ALL APIs
    Policy = new ThrottlePolicy(perSecond: 1, perMinute: 20, perHour: 200)
    {
        IpThrottling = true,
        ClientThrottling = true,
        EndpointThrottling = true,
        EndpointRules = new Dictionary<string, RateLimits>
        { 
             //Fine tune throttling per specific API here
            { "api/search", new RateLimits { PerSecond = 10, PerMinute = 100, PerHour = 1000 } }
        }
    },
    Repository = new CacheRepository()
});

Best regards,
Lan Huang

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