The server scope can be used both to create and use variables that are available to all applications on the ColdFusion instance, and it offers dozens of pre-defined (read-only) variables describing your ColdFusion server environment.
Create and use server variables
Use server variables for data that should be accessible across all clients and applications. You access and manipulate server variables the same way you use Session and application variables, except you use the variable prefix Server.
Server variables do not time out, but you can delete them. Because server variables are stored in memory on the current instance, they are lost when the instance shuts down. They are also not shared between instances in a ColdFusion cluster.
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._
Use ColdFusion’s pre-defined 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.
