Developing ColdFusion Applications
Using the Application Framework

Using Server Variables

Server variables are associated with a single ColdFusion Server. They are available to all applications that run on the server. Use server variables for data that must be accessed across clients and applications.

Server variables do not time out, but are lost when the server shuts down. You cannot delete a Server variable. Therefore, you should limit the amount of data you store in Sever variables.

Server variables are stored on a single server. As a result, you should not use Server variables if you use ColdFusion on a server cluster.

ColdFusion provides the following standard read-only Server variables:

Variable	Description
Server.ColdFusion.ProductName	The name of the product, that is, ColdFusion Server
Server.ColdFusion.ProductVersion	The version number for the server that is running, such as 5,0,0
Server.ColdFusion.ProductLevel	The server product level, such as Enterprise
Server.ColdFusion.SerialNumber	The serial number assigned to this server installation
Server.ColdFusion.Locales	The locales, such as English (US) and Spanish (Mexican), supported by the server
Server.OS.Name	The name of the operating system, such as Windows NT
Server.OS.AdditionalInformation	Additional information provided by the operating system, such as the Service Pack number
Server.OS.Version	The version number of the operating system, such as 4.0
Server.OS.BuildNumber	The specific operating system build, such as 1381

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