CFAdmin API clearTrustedCache weirdness with clustered sites.

Question

This is my first post here in a long while and it is a
doozy....
Thanks in advance for any assistance you can provide and for
reading my lengthy description to come:
My Setup:
I have 2 physical web servers setup each of which has CFMX
7.02 installed in the multiserver JRun configuration with the
chf7020002.jar patch installed. I have created 2 instances on each
system from EAR files and added each of these instances to a local
cluster group. There is no clustering between the physical web
servers. I have not installed any Jrun updates. I am using a custom
JRE to fix the DST issues as documented in the CFusion support home
on this site.
I then have the cluster attached to an IIS 6.0 Virtual web
host on Windows 2003 Standard with SP2 and all patches installed.
The Virtual Host is connected to a file share for the web root.
Everything works wonderfully for serving and the local cluster
allows graceful fail-over between the local jrun instances attached
to the cluster.
My Problem:
We are paying for this high availability by needing to clear
the template cache on 4 separate jrun instances every time a
developer performs a code update. This means logging in to each of
the instances and navigating to the Clear Template Cache Now
button. This works without error.
My Solution (that doesn work):
In order to automate the above I found code
Online
and placed it in a file in the webroot of each of the instances
(c:\jrun\servers\instance-a\instance-a.ear\instance-a.war\).
I then called the file via
http://instance-a:8301/ClearTemplateCache.cfm
http://instance-b:8302/ClearTemplateCache.cfm
http://instance-b:8301/ClearTemplateCache.cfm
http://instance-b:8302/ClearTemplateCache.cfm
after making a change.
My even bigger problem:
This is where it gets weird. When calling the changed page we
sometimes get the changes and other times it looks like the page
before the changes. If we make another change and then rerun the
scripts then we start cycling through 3 different versions of the
page at random. The only way to clear this behaviour is to click
the Clear Template Cache button.
I have tried shutting down one of the servers to ensure there
is no inter server communication causing the issue and the problem
still occurs. I then tried shutting down one of the instances on
the remaining server and the error still occurs when only one
instance is present.
My Plea For Help
Does anyone have any ideas? I really don't want to have to
restart each instance via the admin API since the restarts at
costly in terms of time. I am trying to get the developers here on
a proper test and publish schedule to minimize the need for the
sort of functionality described but changing their habits will take
much longer than a fix or ideas from the gang on these forums.
Thanks for your time,
Josh
ClearTemplateCache.cfm:

Answer 1

Adobe Tech support was very helpful in resolving this issue.
Uncheck "Save class files" in the CFAdministrator >
Caching panel of each instance.
This will incur a slight time penalty the first time a page
is called but it is 100% effective.