opcache php5.5 w3totalcache

Hi. I just updated my server from ubuntu 12.04 to 14.04.

It also updated php to 5.5.9.

Now, i’m trying to know what’s the best configuration to use opcache + php5.5 + w3totalcache, since php5.5 has zend cache and it is not supported for w3totalcache.

Should i go and install APCu? What is APCu? What are your experiences?

thanks.

https://wordpress.org/plugins/w3-total-cache/