[opencms-dev] What is the core cache ?

[Christoph Fröhlich]

Hi Sigfried,

in opencms 8.0.4 clearing the core caches calls
org.opencms.monitor.CmsMemoryMonitor.clearCache()

which is implemented as follows:
----------------------------------------
    /**
     * Clears almost all internal caches.<p>
     */
    public void clearCache() {

        clearPrincipalsCache();

        flushCache(CacheType.PROJECT);
        flushCache(CacheType.RESOURCE);
        flushCache(CacheType.RESOURCE_LIST);
        flushCache(CacheType.PROPERTY);
        flushCache(CacheType.PROPERTY_LIST);
        flushCache(CacheType.PROJECT_RESOURCES);
        flushCache(CacheType.PUBLISHED_RESOURCES);
    }
----------------------------------------

PrincipalsCache holds all information about users, groups, accesscontrol list etc. This is used to speed up permission checks.
I can't tell, what the other caches include.

As far as I know, at least principals cache is cleared every time you publish

Hope that helps a bit

Regards
Christoph

Am 21.01.2013 um 11:55 schrieb Siegfried Ehret <s.ehret at eurelis.com>:

> Hi all,
> We are having an epic amount of data in the Heap of the JVM (almost 4go), with lots of data in the old gen.
> When clearing the Core Cache, the heap is cleared (around 400mo).
> 
> Can you explain me what is included in the Core Cache ?
> 
> Thanks
> 
> -- 
> Siegfried Ehret
> _______________________________________________
> This mail is sent to you from the opencms-dev mailing list
> To change your list options, or to unsubscribe from the list, please visit
> http://lists.opencms.org/cgi-bin/mailman/listinfo/opencms-dev
> 
> 
> 








-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://webmail.opencms.org/pipermail/opencms-dev/attachments/20130121/0d18f2f3/attachment.htm>