Check if your symfony application is ready for deployment

For the production server, you probably want the best performance possible. Installing a PHP accelerator will give you the best improvement for your money.

APC is one of the most popular ones.

On a dedicated server

The set up is as simple as :

pecl install apc

On a shared hosting environment

Sometimes the installation is just not possible. Read the documentation.

If you use the Doctrine ORM

You can enable the cache system by adding the following method to mySfProject/config/ProjectConfiguration.class.php :

/**
 * Configure the Doctrine engine
 **/
public function configureDoctrine(Doctrine_Manager $manager)
{
  $manager->setAttribute(Doctrine::ATTR_QUERY_CACHE, new Doctrine_Cache_Apc());
}