At $WORK we serve billions of requests a month on with nginx, php-fpm, and Percona.
In total I think it’s something on the order of ~1000 application servers (nginx/PHP) that are specced to handle 28 concurrents, and 200 Percona instances of varying sizes. A big HAProxy cluster sits in front of the whole thing and cloud flare in front of that.
A whole bunch of memcached servers spread around too. By far the biggest bottleneck is the MySQL servers at the moment, so we rely heavily on memcached to keep requests away from the DBs.
In total I think it’s something on the order of ~1000 application servers (nginx/PHP) that are specced to handle 28 concurrents, and 200 Percona instances of varying sizes. A big HAProxy cluster sits in front of the whole thing and cloud flare in front of that.
A whole bunch of memcached servers spread around too. By far the biggest bottleneck is the MySQL servers at the moment, so we rely heavily on memcached to keep requests away from the DBs.