This module provides the ability to store cache items in files.
By default, Backdrop uses the database for caching. However, this adds database overhead. The database could be a bottleneck when there are many people accessing the site at the same time. File caching is easy to set up, and does not require external services, nor extra software to be installed on the server.
The default implementation stores cache as serialized objects as strings in files.
There is also an experimental approach that stores cache files as PHP code so that if opcache is installed, that it has an opportunity of storing the cache-as-code in opcache memory. This will likely increase retrieval of the cache speed. The risk, however, is that if a cache is corrupted that it could result in problems loading the site, whereas the default approach will just rebuild the cache item.
- Download module to modules folder.
- No need to enable the module. Right now the module only provides only a class to replace BackdropDatabaseCache.
- Change
settings.phpby adding these lines:
$settings['cache_default_class'] = 'FilecacheCache';
$settings['cache_backends'] = array('modules/filecache/filecache.class.php');Optionally, set the directory for storing the cache bins. If not set it will store them in Backdrop's private files directory, or default to the public files directory and protect the directory. Custom directory:
$settings['filecache_storage_dir'] = '/app/filecache';If you wish to use the experimental approach of storing the cache in PHP files,
set the cache class to be FilecachePhpCache instead, in the lines above.
This project is GPL v3 software. See the LICENSE.txt file in this directory for complete text.
Created by Gor Martsen.
This module has been inspired by http://drupal.org/project/filecache but it is not Drupal 7 port. All code has been written based on cache.inc file and Backdrop API.