We are not using php-v8js for server rendering at FB.
1,589 karma · joined September 26, 2012
nakazawa.tech
Relay has a special server rendering mode that we created that I'm hoping to speak about soon. Until then I'm afraid I can't say more than that :)
We haven't yet finalized what API we will provide when we open source Relay. You'll certainly get one object, called Relay, however ;)
(source: I'm an engineer on Relay)