Microsoft.Web.RedisSessionStateProvider 运行异常问题

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　　System.TimeoutException: Timeout performing GET MyKey, inst: 2, mgr: Inactive,  
queue: 6, qu: 0, qs: 6, qc: 0, wr: 0, wq: 0, in: 0, ar: 0,  
IOCP: (Busy=6,Free=994,Min=4,Max=1000),  
WORKER: (Busy=3,Free=997,Min=4,Max=1000)

　　
  

　　REFER:      
支持高并发的IIS Web服务器常用设置        
http://www.cnblogs.com/dudu/archive/2013/06/08/iis_webserver_settings.html      
云计算之路-阿里云上：从ASP.NET线程角度对“黑色30秒”问题的全新分析      
http://www.cnblogs.com/cmt/p/3695594.html      
微软IIS服务器的最佳优化工具- IIS Tuner      
http://www.cnblogs.com/shanyou/archive/2013/04/20/3032091.html      
移除IIS默认的响应头      
http://www.cnblogs.com/dudu/p/iis-remove-response-readers.html      
threadpool      
https://gist.github.com/JonCole/e65411214030f0d823cb#file-threadpool-md        
https://msdn.microsoft.com/en-us/library/7w2sway1(v=vs.100).aspx      
aspnet-redis-providers      
https://azure.microsoft.com/en-us/documentation/articles/cache-aspnet-session-state-provider/        
https://github.com/Azure/aspnet-redis-providers