I have been googling about this, but can't found the exact answer. This about wordpress blog, I'm using W3TC + APC to cache it and Nginx + phpfpm to run the php. I have 1 gig ram and 1 CPU.
I'm planing to save more ram (optimize), and thinking move to apache+nginx stack. I don't know what was it called, as I read the tutorial, nginx working as front end and apache as backend.
How much it can improve the general performance? And, is that true if that stack more efficient compare with nginx alone?
Thanks