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ClearCache() based on expiry date

 
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bluejester
Smarty Regular


Joined: 26 Apr 2012
Posts: 55

PostPosted: Thu May 23, 2013 3:13 pm    Post subject: ClearCache() based on expiry date Reply with quote

Hello,

I'm using Smarty 3.1.13 and use the Smarty Cache very much for an application that requires huge db resources.

Depending the user's request, I will SetCacheLifetime from 1 month to 1 year. It works well.

The point is that the application is very used and the cache directory is filled with thousands and thousands of cached files (I set a different CacheId depending on the user's request), resulting as a performance issue.

To clear the cache of files older than 1 month, I can do this :
$smarty->clearAllCache(3600 * 24 * 30);

My problem is that it also destroys every cache file where CacheLifeTime has been set to 2 months, 6 months, 1 year, etc.

Is there any way to clean the cache by some method like $smarty->clearExpiredCache() ? I actually want the clear method to be based to the cache expiration date instead of the cache generation date.

Thanks,
Ben
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U.Tews
Administrator


Joined: 22 Nov 2006
Posts: 4587
Location: Hamburg / Germany

PostPosted: Thu May 23, 2013 8:38 pm    Post subject: Reply with quote

That's a good point.

A preliminary solution is to modify smarty_internal_cachresource_file.php starting at line 212 to
Code:

                    // expired ?
                    preg_match('#\'cache_lifetime\' =>\s*(\d*)#', file_get_contents($_file), $match);
                    if ($_time < (@filemtime($_file) + $match[1])) {
                        continue;
                    }
                    $_count += @unlink((string) $_file) ? 1 : 0;


This patch will delete all expired cache files based on the stored life_time.
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U.Tews
Administrator


Joined: 22 Nov 2006
Posts: 4587
Location: Hamburg / Germany

PostPosted: Sun May 26, 2013 10:52 am    Post subject: Reply with quote

The general solution is now in the SVN trunk and will later be included in 3.1.14

An expire_time of -1 in clearCache() and clearAllCache() will delete outdated cache files
by their individual cache_lifetime used at creation.
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Aristophan
Smarty Regular


Joined: 10 Jan 2011
Posts: 84

PostPosted: Mon May 27, 2013 9:33 am    Post subject: Reply with quote

Can you estimate when 3.1.14 will be released, Uwe?
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bluejester
Smarty Regular


Joined: 26 Apr 2012
Posts: 55

PostPosted: Mon May 27, 2013 12:37 pm    Post subject: Reply with quote

In 3 words : you are great.

Thanks !
Ben
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Aristophan
Smarty Regular


Joined: 10 Jan 2011
Posts: 84

PostPosted: Fri May 31, 2013 9:19 am    Post subject: Reply with quote

Aristophan wrote:
Can you estimate when 3.1.14 will be released, Uwe?

Please forgive! Just to get this into focus again...
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