PHP 5.4 is nearing EOL and it’s the only package available for CentOS 6 without having to use additional repositories. We can upgrade php 5.6 using remi repo, you can use the following command to install remi repo and install php using the same repo.
Dedicated Redis Instances Per WordPress Site on cPanel: A Case Study
How we deployed a dedicated Redis instance per cPanel account for WordPress: Unix-socket isolation, no cross-tenant cache pollution, under 1% overhead.