Memcached in Symfony2

memcached_symfony.php

//file app/config/parameters.ini
[parameters]
    memcached_host          = 127.0.0.1
    memcached_port          = 11211
    memcached_key_root      = mykey
    memcached_object_ttl    = 60
    
//file src/MyApp/MyBundle/Resources/config/services.yml
parameters:
    memcached.servers:
      - { host: %memcached_host%, port: %memcached_port% }

services:
    memcached:
        class: Memcached
        calls:
            - [ addServers, [ %memcached.servers% ]]
            
//file src/MyApp/MyBundle/Controller/MyController.php
$memcached = $this->get('memcached');
$memcachedObjectTtl = $this->container->getParameter('memcached_info_ttl');
$memcachedKeyRoot = $this->container->getParameter('memcached_key_root');
      
$object = $memcached->get($memcachedKeyRoot.$objectKey);
if(!$object) {
    $object = $this->getObject($objectKey);//TODO coder la méthode getObject
    $memcached->set($memcachedKeyRoot.$objectKey,$object,$memcachedObjectTtl);
}