restart application without restarting server?

Question

Is there a way to restart a ColdFusion application without restarting the entire server?

There are two ColdFusion applications running on a server and I only want to restart one of them.

Answer 1

If you are using Application.cfc, you can update it so that you can force a call to onApplicationStart() if something specific is passed in the url, or something similar. Simply place a check for that magic token in onRequestStart(), and call onApplicationStart() if it is.

If you are not, you can try @Marcos's suggestion. I'm not sure what ramifications that may have in your application. What I would suggest is actually renaming your application, so it starts as a new app.

Answer 2

If you're on CF9, run ApplicationStop() https://cfdocs.org/applicationstop

Answer 3

Here you go, my CF7/8 version of CF9's ApplicationStop. I believe this is thread safe, noting Sean's comment.

<cffunction name="ApplicationStop" returntype="boolean" output="false">
 <cfif IsDefined('application')>
   <cftry>
     <!--- This is just in case there's no app scope but variables.application --->
     <cfset CreateObject('java', 'coldfusion.runtime.ApplicationScopeTracker').cleanUp(application) />
     <cfreturn true />
     <cfcatch type="any"></cfcatch>
   </cftry>
 </cfif>
 <cfreturn false />
</cffunction>

As mentioned by Henry, he's my blog post on the subject: http://misterdai.wordpress.com/2010/06/14/cf-flag-application-to-run-onapplicationstart-part-2/

Answer 4

A less invasive way of ending your app is to temporarily set the ApplicationTimeout to something very short.

Here is an example from an application.cfc file where the app is set to timeout in 10 seconds, which is plenty short for making a change and then checking back:

<cfcomponent displayname="Application">
    <cfscript>
        this.name = "myAppName";
        this.setclientcookies="yes";
        this.sessionmanagement="yes";
        this.sessiontimeout= CreateTimeSpan(0,0,60,0);
        this.applicationTimeout= CreateTimeSpan(0,0,0,10);
    </cfscript>
    ...
</cfcomponent>

You might need to limit the session, too. See this article by Ben Nadel for an in-depth look at Application and Session timeouts.