Server page caching - stopping it

How can I stop the server, during development, from caching the HTML pages. I am finding that at some points, cant figure out why, the server will not serve an HTML file that has been modified, it serves a cached version. I am modifying the HTML file directly using Aptana via FTP. Of course stopping and restarting the service works but there has to be another way!Thanks for any help.

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sıɹɥɔ

Message from Chris Webster <cwebster@opentext.com> via eLink

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">eLink

Hi Pam,

Yes, Livelink can cache WebLingo files, and generally does. When caching is enabled, the first time a page is generated its WebLingo is compiled and subsequent uses of that page will access the cache instead of the WebLingo source file. Caching is enabled when Livelink is run as a service; when Livelink is running in the IDE (Builder) the caching is disabled. The result is that when a developer is using Builder they can make changes to WebLingo files and see the results immediately, and when the module is put into production as a service performance is enhanced.

In your case it sounds as though you want to have the Livelink service running but have the WebLingo caching disabled. This can be accomplished by the (unsupported) setting of a global variable:

$WebLingo.gCheckDates = TRUE

Note that this setting will apply to *all* WebLingo files used by the system. On each output the files will have their filesystem dates checked for a change since the most recent use by Livelink, and be reloaded if necessary.

You might consider executing the above OScript statement in the llweb_startup.lxe file that boots up your development Livelink system. Please be sure to revert to the original file to put your system back in a supported state (you will not want this set for a system in production).

Hope this helps,

-chris

From: eLink Discussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: Friday, December 12, 2008 1:37 PM
To: eLink Recipient
Subject: Server page caching - stopping it

Server page caching - stopping it

Posted by ulabsadmin (Weller, Pam) on 12/12/2008 02:36 PM

Kyle_Swidrovich

Message from Kyle Swidrovich <kswidrov@opentext.com> via eLink

eLink

Web lingo files are compiled and cached,once per thread.

If you hit a thread where the file has notyet been cached, it will read in the file from disk (which you just modified),compile it, cache it on that thread and serve it to the browser. Forthose threads, you will see your change.

The WEBLINGO:WebLingo Root:CacheMap.LookupCompiledFilefunction is what performs the caching.

It relies, however, on a hardcoded valuein $WebLingo.gEnableCaching to determine if caching should occur.

Caching can also be avoided if $WebLingo.gCheckDatesis FALSE and the second parameter to LookupCompiledFile was set to TRUE (forceCompile).

Again, $WebLingo.gCheckDates is hardcoded,and the calling function (WEBLINGO:WebLingo Root:WebScript.RunFileWithArglist)does not pass in an explicit TRUE for LookupCompiledFile.

The only way you can modify these valuesis by either writing a patch that patches the features or modify the startupscript to tweak the values after the WEBLINGO OSpace has loaded.

To do this, backup then open thellweb_startup.lxe file in the root of your Livelink installation directory.

Locate the following section in the file:

// Apply allpatches

if ( retval.OK )

String patchDir= dirPrefix + 'patch' + File.Separator()

$PatchUtils.Patch(patchDir )

else

echo("Skipping patch loading." )

end

Right after this patch loading section,insert a line to change the gEnableCaching flag:

$WebLingo.gEnableCaching= FALSE

That should disable the web lingo cachingwhen the service is restarted.

_________________________________________

Kyle Swidrovich

Principal Search / SDK Product Specialist
Livelink Escalations Support Team
Open Text Corporation

275 Frank Tompa Dr.
Waterloo, ON, CANADA

Phone : +1-800-540-7292
Online: http://support.opentext.com
_________________________________________

From: eLinkDiscussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: Friday, December 12, 20082:37 PM
To: eLink Recipient
Subject: Server page caching -stopping it

Server page caching - stopping it

Posted by ulabsadmin (Weller, Pam) on 12/12/2008 02:36 PM