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+--- Thread: Caching (/showthread.php?tid=15852)
Caching - El Forum - 02-16-2009
[eluser]Michael Nielsen[/eluser]
I'm currently using the CI cache class however when I update information in my database it takes 30 seconds to take visual affect.
Is it possible to have the cache file re-written when I update my database so my users get to see their changes immediately?
Caching - El Forum - 02-16-2009
[eluser]sophistry[/eluser]
you have to delete the cache file manually.
http://ellislab.com/codeigniter/user-guide/general/caching.html
Caching - El Forum - 02-16-2009
[eluser]Michael Nielsen[/eluser]
yes i know that but I want it do be done when the user updates their information, My question was is it possible?
Caching - El Forum - 02-16-2009
[eluser]sophistry[/eluser]
there is no CI 'interface' for deleting cache files. that is why i said do it manually.
this php function deletes files...
Code:
unlink();Caching - El Forum - 02-16-2009
[eluser]fesweb[/eluser]
And to find the correct file to delete, I believe you do something like this
Code:
$file_to_delete = md5($the_uri_of_the_page);Caching - El Forum - 07-16-2010
[eluser]minerbog[/eluser]
I have written a extension of the output class to do just this. Be aware that the cache system creates a md5 hash of the whole uri to use as a file name. This includes the 3rd 4th 5th etc segments, so i suggest anyone using this code uses it only with say test controller and some function like index.php/test/some.
Code:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Output extends CI_Output {
function delete_page_cache($segment_one = '')
{
$CI =& get_instance();
$path = $CI->config->item('cache_path');
$cache_path = ($path == '') ? BASEPATH.'cache/' : $path;
if ( ! is_dir($cache_path) OR ! is_really_writable($cache_path))
{
return;
}
$uri = $CI->config->item('base_url').
$CI->config->item('index_page').
'/'.$segment_one;
$cache_path .= md5($uri);
unlink($cache_path);
}
}useage : $this->output->delete_page_cache('test/some');
Hope someone finds this useful.
Gavin.