History: Link Cache

            !Cache

This page is about caching locally the pages when adding a hyperlink. This is different than ((Smarty cache)).

^This page is a quick copy from tw.o and needs ((refactor))ing
This page needs ((screenshot))s^

-=User doc=-
See ((Wiki-Syntax Links|#Link_Cache|here)).

-=admin Documentation=-
The  ''cache''  option in the Admin menu lets the administrator administer the Tiki cache: 

__''insert graphic''__

You can list the cached pages, find pages using the find button and for each cache entry you can view it, remove it, or refresh it (will retrieve a fresh copy of the page). If the enrty is removed it will no longer display a  cache  link from the Wiki page where the site is referentiated.

__''insert graphic''__
If the wiki cache is enabled then cached pages will show a (cached) text besides the page description. A special icon is also added to let the user force a refresh of the page if something that should be updated was not because the cached page is being displayed. The icon can be found at the top:

__''insert graphic''__
This icon can be used to refresh a cached wiki page.

-=Try it out=-
please link to the live Feature on tikiwiki.org

-=RFE=-
It would be very nice if there was a way of purging the cache via the tiki interface.

To empty the cache manually try
~pp~mysql -e 'truncate table tiki_link_cache;' tiki~/pp~
adjust tiki db name to fit yours
Anecdotally, we've noticed a huge speed gain after clearing the cache on HEAD.

-=Example=-
Users complained that personal content was being displayed to the wrong users.  The page said (Cached) at the top, but we had global cache off (Admin > Wiki).  nkoth recommended 
{CODE()}mysql -u dbuser -ppassword  dbname -B  -e  "select wiki_cache from tiki_pages where wiki_cache > 0"{CODE}  Ran that and saw 30 some pages with wiki_cache = 7200.  So tried this:  
{CODE()}mysql -u dbuser -ppassword  dbname -B  -e  "UPDATE tiki_pages       SET wiki_cache=0       WHERE wiki_cache > 0 "{CODE}
Hope that works...

-=Related=-
((Cache External Images))
((System Admin)) (aka Tiki Cache/System Admin)