pdepend.xml
<?xml version="1.0"?>
<symfony:container xmlns:symfony="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://pdepend.org/schema/dic/pdepend"
xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
<config>
<cache>
<driver>memory</driver>
</cache>
</config>
</symfony:container>