1. Kloxo-MR 6.5.1 (beta version at this moment) has many features and more flexible compare to 6.5.0 (final version). Remember, 6.5.1 still in beta step. If want 'stable' need candidate/final. No recommended for shared-hosting for 6.5.1 but 'stable' enough for private hosting
2. I am not intensively to investigate mariadb in 6.5.0 but in 6.5.1 need change php53s to php54s for running panel
3. Microcache already enable in nginx (setting parameters in config)
If you mean 'user' is 'client' (reseller and or customer) that mean 'shared hosting' environment.
1. You mean if i run share hosting i should not use 6.5.1, right ? How about great new features, is it optimize server alot ?
2. I try to find it by my self, but i need your suggest lets mysql do it work or change to mariadb is best choice ?
3. Please show me the guide to config microcache, I'm newbie with nginx !
4. Should i use 32bit or 64bit CentOS. And kloxo mr will update automatically or how to manual update by command !
And one more thing, I willing to use Apache as web server with nginx as proxy, is it good for handle many connections ?