[TYPO3-dev] set_no_cache is bad. What's next?

[Franz Holzinger]

Hello John Angel,

>> set_no_cache() for me (back then) did mean no caching for
>> the current extension, instead of no caching for the entire page.
> 
> Is it possible to temporary disable caching of the current extension,
> but to keep caching of the rest of the page? E.g. for polls ext.
> 
> Something like switching from USER_INT to USER object in the fly?
> 
E.g. tt_board is usually a USER object. So everything is cached by default.

But if someone has submitted new text, then this should be shown
immediately to all the others who will in the near future visit this
page or a list page above.

This is done by this command:

$this->clear_cacheCmd(intval($this->newData['tt_board']['NEW']['pid']));

or
$this->clear_cacheCmd($pid);

/**
 * Form-data processing class.
**/

tslib_feTCE::

/**
	* Clear cache for page id.
	* If the page id is the current page, then set_no_cache() is called (so
page caching is disabled)
	*
	* @param	integer		The page id for which to clear the cache
	* @return	void
	* @see tslib_fe::set_no_cache()
	*/
function clear_cacheCmd($cacheCmd)	{
	$cacheCmd = intval($cacheCmd);
	if ($cacheCmd)	{
		$GLOBALS['TYPO3_DB']->exec_DELETEquery('cache_pages',
'page_id='.intval($cacheCmd));
		if ($cacheCmd == intval($GLOBALS['TSFE']->id))	{	// Setting no_cache
true if the cleared-cache page is the current page!
			$GLOBALS['TSFE']->set_no_cache();
		}
	}
}


So the set_no_cache is still needed.
Normally all the tt_board pages are cached and this should be like this.
Only sometimes when somebody enters a new post, then the pages showing
it must be cleared from cache. It would be no good solution if it would
be necessary to turn the caching totally off for the tt_board extension.
I cannot see any improvement in deleting the set_no_cache function. It
should remain but be enhanced to only delete the parts of the cache
belonging to an extension. The entered texts will normally remain the
same until someone, may only once in a month, wants to change them.


- Franz