Implementation of WEBAPI interface Access frequency control

About the current limit of the article, the blog Park is still quite a lot of. This paper makes an example based on filter current limit, which is a concrete example of using Webapithrottle.

Implementation method:

1. Use NuGet to add webapithrottle references to the WEBAPI project

2, to register, generally in the Webapiconfig register method to add, the code is as follows:

1Config. Filters.add (NewCustomthrottlingfilter ()2             {3Policy =NewThrottlepolicy ()4                 {5                     //IP Configuration Area6Ipthrottling =true,7Clientthrottling =true,8 9                     //The endpoint throttling policy configuration is obtained from the enablethrottling attribute. TenEndpointthrottling =true One                 } A});

Where Customthrottlingfilter is the throttlingfilter that you rewrite, you can also use the default configuration directly. My custom Customthrottlingfilter is as follows:

1      Public classCustomthrottlingfilter:throttlingfilter2     {3         /// <summary>4         ///sets the indentity.5         /// </summary>6         /// <param name= "Request" >The request.</param>7         /// <returns>requestidentity.</returns>8         protected Overriderequestidentity setindentity (httprequestmessage request)9         {Ten             varSessionId =string. Empty; One             Try A             { -                 varRequestcookie =request. Headers.getcookies (). FirstOrDefault (); -                 if(Requestcookie! =NULL) the                 { -                     foreach(varIteminchRequestCookie.Cookies.Where (item = Item). Name = ="session_id")) -                     { -SessionId =item. Value; +                          Break; -                     } +                 } A             } at             Catch(Exception) -             { -SessionId =string. Empty; -             } -             return Newrequestidentity () -             { inClientkey =string. Isnullorwhitespace (sessionId)? SessionId:"Anon", -ClientIP =Base. Getclientip (Request). ToString (), toEndpoint =request. RequestUri.AbsolutePath.ToLowerInvariant () +             }; -         } the}

3, the need to control the interface or controller with a head mark

  )] // Control access frequency up to 12 times per minute

No need to control the frequency of access can not add or add

[Disablethrotting]

This enables the use of filters to control the frequency of access to specific APIs, more use of the method can refer to the following address.

Resources:

Webapithrottle Flow-Limiting framework user manual http://www.cnblogs.com/mushroom/p/4659200.html

Control the frequency and current limit of ASP. http://www.cnblogs.com/Irving/p/4664786.html

control ASP. NET Web API call frequency http://www.cnblogs.com/shanyou/p/3194802.html

Implementation of WEBAPI interface Access frequency control