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.
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:
server.coldfusion
<cfscript>
val=server.coldfusion
writeDump(val)
</cfscript>
| Variable | Description |
|---|---|
| InstallKit | The OS on which ColdFusion is installed. |
| appserver | The application server that ColdFusion is running on, for example, Tomcat. |
| expiration | The expiration date of ColdFusion license. |
| productlevel | Indicates if ColdFusion on your machine is Developer or Enterprise. |
| productname | ColdFusion server. |
| productversion | The ColdFusion version that is currently running. |
| rootdir | Directory under which ColdFusion is installed, such as C:\<cfhome> or /opt/<cfhome>/cfusion . |
| supportedlocales | The locales, such as English (US) and Spanish (Standard), supported by the server. |
| updatelevel | The current update (hotfix) level applied to the installed version of ColdFusion. |
server.os
<cfscript>
val=server.os
writeDump(val)
</cfscript>
| Variable | Description |
|---|---|
| additionalinformation | The OS on which ColdFusion is installed. |
| arch | The processor architecture, such as x64 or ARM. |
| buildnumber | The expiration date of ColdFusion license. |
| name | The name of the OS where ColdFusion is running. |
| version | The version of the OS. |
server.system.environment
<cfscript>
val=server.system.environment
writeDump(val)
</cfscript>
Lists various environment variable names that describe system-level settings and configurations. These include identifiers for system paths (like ProgramFiles, SystemRoot, Path), processor details (PROCESSOR_ARCHITECTURE, PROCESSOR_IDENTIFIER), operating system information (OS, NUMBER_OF_PROCESSORS), user-specific directories (APPDATA, USERPROFILE), and configuration flags (for example, _PSLockDownPolicy, ZES_ENABLE_SYSMAN). These variables provide essential metadata used by the operating system and applications to understand the system environment, manage resources, and find execution contexts.
