APC Metadata Caching

Symfony, per default, uses a deeply nested filesystem structure. This might be a problem on systems with slow I/O, like a Raspberry Pi. You can configure PartKeepr to use APC as metadata cache, greatly decreasing the required I/O performance.

• Install the PHP APC Module
  • On Debian, the module is called php5-apcu for PHP5 and php-apcu for PHP7.

• Open app/config/config_framework.yml in a text editor
• Note that the indentation is mandatory
• Add the following snippet to the top of the file:

services:
    app.doctrine.apc_cache:
       class: Doctrine\Common\Cache\ApcCache
       calls:
           - [setNamespace, [""]]

• Below the framework, insert the following lines so that it reads:

framework:
    annotations:
        cache: "app.doctrine.apc_cache"

Save the file and re-run setup.