Since 1 week, my website crashes 1 or 2 times a hour.The message error is:504 gateway time-out - nginxThen it crashes again. This problem appears when I edit something in the admin panel. For exemple if I create a new post, the website crashes.In adition, sometimes I get this error on random pages:RAM and CPU are not overloaded (I have 16 cores and 128 GB). Max. CPU is about 2 and max. RAM load is about 8 GB.The problem appears whereas I don't make anny modification on the website since few days.I have only 150 visitors per minute. Before, I had 1000 visitors per minute with CloudFlare and no problem, the site was really fast and no errors, but now I have deactive it because it makes the website crash.I have changed ServerLimit and MaxClients to 1000 in httpd.conf and worker_connections to 10240 in nginx.conf, but that didn't fix the problem.
High trafic: website crash and error
apache