That's possible. WordPress and of course Yandex.ru use them, I think, almost exclusively (there may be a few edge cases where they need to use something else). That's a pretty sizable chunk of traffic right there.

Well one user is Netflix for their streaming, who have 32% of US traffic...

Would sites behind cloudflare fall into this 16% figure since the headers are cloudflare-nginx? Either way, cf powers a lot of sites.

I wonder if ISP deliver anything through nginx.

I doubt it, because Google doesn't use nginx for anything public facing, and I'm pretty sure Facebook, Amazon, Yahoo, and Microsoft don't either. That already counts for a huge chunk of internet traffic.

Nginx is good for relatively high traffic sites, but not so high traffic that you have entire teams of engineers rolling your own load balancing!

Correction: Facebook does use Nginx. As does Hulu, Zappos, Zynga and Dropbox.

http://venturebeat.com/2012/06/18/nginx-the-web-server-tech-...

Do you happen to know why they don't and what do they use? If they are using Apache, I assume they have a custom version that is highly optimized. http://www.serverwatch.com/article.php/3911511/Google-Speeds...

I guess for all fairness, yeah, let's only count public facing. I think with internal proxy nginx will probably be even higher.

> Do you happen to know why they don't and what do they use?

Google originally used a modified version of Apache (and, as you have linked to, contributed a module to it), but my understanding is the Google Web Server is now so far removed from Apache it bears virtually no resemblance to it.

I wonder if they ever plan on open sourcing parts of their web server.