SF2 performance tweaks for fortrabbit - /app/AppKernel.php - /app/config/config_prod.yml

AppKernel.php

<?php

use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;

/**
* Fortrabbit (or general NFS related) patch of Symfony AppKernel.
* 
*/
class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = array(
            new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
            new Symfony\Bundle\SecurityBundle\SecurityBundle(),
            new Symfony\Bundle\TwigBundle\TwigBundle(),
            new Symfony\Bundle\MonologBundle\MonologBundle(),
            new Symfony\Bundle\SwiftmailerBundle\SwiftmailerBundle(),
            new Symfony\Bundle\AsseticBundle\AsseticBundle(),
            new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
            new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
            new Acme\HelloBundle\AcmeHelloBundle(),
        );

        if (in_array($this->getEnvironment(), array('dev', 'test'))) {
            $bundles[] = new Acme\DemoBundle\AcmeDemoBundle();
            $bundles[] = new Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
            $bundles[] = new Sensio\Bundle\DistributionBundle\SensioDistributionBundle();
            $bundles[] = new Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
        }

        return $bundles;
    }

    /**
     * Setup cache dir to tmp dir to speed up cache requests (avoid slow NFS access)
     *
     * @return string The cache directory 
     */
    public function getCacheDir()
    {
        // local tmp dir
        $cache_dir = sys_get_temp_dir() . '/cache';
        
        if ($this->getEnvironment() == 'prod') {
            if (!is_dir($cache_dir)) {
                mkdir($cache_dir, 0777, true);
            }

            return $cache_dir;
        }
        return parent::getCacheDir();
    }


    public function registerContainerConfiguration(LoaderInterface $loader)
    {
        $loader->load(__DIR__.'/config/config_'.$this->getEnvironment().'.yml');
    }
}

config_prod.yml

imports:
    - { resource: config.yml }

framework:
    validation:
        cache: apc

parameters:
    memcached.servers:
      - { host: memcachecluster.frbit.com, port: 11211 }

services:
    memcached:
        class: Memcached
        calls:
            - [ addServers, [ %memcached.servers% ]]

doctrine:
    orm:
        metadata_cache_driver: apc
        result_cache_driver: apc
        query_cache_driver:
            type: memcache
            host: memcachecluster.frbit.com
            port: 11211

monolog:
    handlers:
        main:
            type:         fingers_crossed
            action_level: error
            handler:      nested
        nested:
            type:  stream
            path:  %kernel.logs_dir%/%kernel.environment%.log
            level: debug