The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. It can help speed up your Magento installations.
First, install the PHP APC package (Assuming you are using Ubuntu as your web server):
sudo apt-get install php-apc
Now configure APC for use with Magento. Edit /etc/php5/conf.d/apc.ini:
extension=apc.so apc.enabled = On apc.optimization = 0 apc.shm_segments = 1 apc.shm_size = 512 apc.ttl = 7200 apc.user_ttl = 720 apc.num_files_hint = 1024 apc.mmap_file_mask = /tmp/apc.XXXXXX apc.enable_cli = 1 apc.cache_by_default = 1 apc.max_file_size = 10M apc.stat = 0 #apc.include_once_override = 1
Once you have changed the apc.ini file you will need to restart the Apache Web Server:
service apache2 restart
Finally, configure Magento to use APC: Edit app/etc/local.xml and add the following:
<global> .... <cache> <backend>apc</backend> <prefix>MAGE_</prefix> </cache> </global>
That’s all there is to it. To check that APC is being used you can use the APC.php file as discussed in my post.
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