PhpRedis Session handler

[bcremer]

Hi @b3nl, thanks for this project. It might help a few people 👍

Are you aware of the PhpRedis PHP Extension? It contains a native PHP Session handler that can be used in shopware without any modifications in the core, just by configuring it in the usual config.php:

// config.php
<?php
return array(
    'db' => array(...),
    'session' => array(
        'save_handler' => 'redis'
        'save_path' => 'tcp://host1:6379?weight=1, tcp://host2:6379?weight=2&timeout=2.5'
    ),
);

I would be nice if you would mention this in the README.md so people have an alternative.

Using services_local.xml is not really a core modification but a undocumented feature that will most probably be removed once we have a plugin system in place that allows direct container manipulation.

Greetings,
Benjamin