Redis Configuration And Implementation On Centos 6 / Cpanel Server

Dear members,

I am trying to get this redis caching right. I installed and configured redis 6 on our vps and I set the caching in our store config.local.php file from 'file' to 'redis'.


What really puzzles me is what I exactly do with this on line 121

// Set to unique store prefix if you use the same Redis/Xcache/Apc storage
// for serveral cart installations
$config['store_prefix'] = '';

What exactly do I do with the store prefix ? I did not read anything in the manual while installing redis.