So W3 Total Cache now supports Redis! W3 Total Cache — WordPress Plugins Anyone tried it yet?
Interesting, though for non-apache servers like Nginx, W3TC is not needed. Best cache plugin for ease of use/setup/configuration and performance is keycdn cache enabler. Centmin Mod 123.09beta01's centmin.sh menu option 22 wordpress installer defaults to keycdn cacher enabler although it has optional support for wp super cache and redis cache at nginx level.