0.解決檢視狀態訊息驗證碼 (MAC) 錯誤
https://support.microsoft.com/zh-tw/help/2915218/resolving-view-state-message-authentication-code-mac-errors
0.1當 ASP.NET 發生 Viewstate MAC 的驗證失敗 ( machineKey )
http://blog.miniasp.com/post/2007/11/07/ASPNET-20-and-Validation-of-ViewState-Mac-failed-exception.aspx
1.Web Gardens, Web Farms, Clouds, and Session State in C# ASP .NET
http://www.primaryobjects.com/2010/12/05/web-gardens-web-farms-clouds-and-session-state-in-c-asp-net/
2.How To: Configure MachineKey in ASP.NET 2.0
https://msdn.microsoft.com/en-us/library/ms998288.aspx#paght000007_machinekeyexplained
3.Understanding the Forms Authentication Ticket and Cookie
https://support.microsoft.com/en-us/help/910443/understanding-the-forms-authentication-ticket-and-cookie
4.How to create keys by using Visual C# .NET for use in Forms authentication
https://support.microsoft.com/en-us/help/312906/how-to-create-keys-by-using-visual-c-.net-for-use-in-forms-authentication
5.IIS 7.5 Web Farm With Loading Balance (Session Problem)
http://sirion-notes.blogspot.tw/2013/12/iis-75-web-farm-with-loading-balance.html
6.ASP.NET State Management Recommendations
https://msdn.microsoft.com/zh-tw/library/z1hkazw7(v=vs.85).aspx
7.Web Farm Deployment Considerations
https://msdn.microsoft.com/en-us/library/ms998288.aspx#paght000007_webfarmdeploymentconsiderations