Today our site (local news) was hit by users that would like to know whats going on.
I have set up 2 years ago dedicated server with memcached turned on and it works great but today.
Provider of data-center told that we have reached about 80 megabit incoming traffic in peak today, proc had about 76% load.
Drupal works as nginx -> php-fpm. When server became slow, i could ssh in server, inspect processes, even worked apache on separate ip - phpmyadmin, and nginx result in 502 error on server.
I think php-fpm was slow and could not deliver data from memcached, is there approach to work direct nginx + memcached without php in Drupal?
Sorry for English.