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, such as global server
hit counts.
Server variables do not time out, but they are lost when the
server shuts down. You can delete server variables.
Server variables are stored on a single server. As a result,
do not use server variables if you use ColdFusion on a server cluster.
You access and manipulate server variables the same way use Session
and application variables, except you use the variable prefix Server.
Important: Place code that uses server variables inside cflock tags in circumstances that could result in race conditions from multiple accesses to the same variable. You do not have to lock access to built-in server variables.
ColdFusion provides the following
standard built-in read-only server variables:
Variable
|
Description
|
|---|
Server.ColdFusion.AppServer
|
The name of the J2EE application server
ColdFusion is using. For ColdFusion server editions, which have
an integrated application server, the name is JRun4.
|
Server.ColdFusion.Expiration
|
The date on which the ColdFusion license
expires if it is the trial version.
|
Server.ColdFusion.ProductLevel
|
The server product level, such as Enterprise.
|
Server.ColdFusion.ProductName
|
The name of the product (ColdFusion).
|
Server.ColdFusion.ProductVersion
|
The version number for the server that is
running, such as 6,0,0.
|
Server.ColdFusion.Rootdir
|
Directory under which ColdFusion is installed,
such as C:\cfusion.
|
Server.ColdFusion.SerialNumber
|
The serial number assigned to this server
installation.
|
Server.ColdFusion.SupportedLocales
|
The locales, such as English (US) and Spanish
(Standard), supported by the server.
|
Server.OS.AdditionalInformation
|
Additional information provided by the operating
system, such as the Service Pack number.
|
Server.OS.arch
|
The processor architecture, such as x86
for Intel Pentium processors.
|
Server.OS.BuildNumber
|
The specific operating system build, such
as 1381
|
Server.OS.Name
|
The name of the operating system, such as
Windows NT.
|
Server.OS.Version
|
The version number of the operating system,
such as 4.0.
|
