Edit : Sorry about the title, obviously not LSPCI but LSAPI ! Hello, We're looking into purchasing a LSWS licence for our new server configuration and I've read your documentation about APC and am not sure which is the best configuration for this. We run cPanel serveurs with CloudLinux 6 + CageFS. I've already read this : http://www.litespeedtech.com/support/wiki/doku.php?id=litespeed_wiki:php:opcode_cache But have also read that Litespeed 4.2 added suexec support. This is what we are lookind for : 1) PHP to be run with the same user as the FTP user (I've read that some hosts dont want this but we do because our customers like being able to run updates and installs without playing with chmods). 2) To have a single APC cache per user shared by multiple children. 3) To be sure that cache is not accessible between different user accounts. Before looking at litespeed we looked at PHP-FPM but PHP-FPM's pools did not prevent users from accessing each other's cache and it was too complicated to run multiple instances of PHP-FPM (one instances with one pool per user). Is Litespeed the miraculous solution to my problem ? Thanks !