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So i have this website, it gets 1500-2000 visits every 30min, around 100 every 30min during night time (00-08am).
Since 2 months ago i got this huge spikes, i tried everything to try to understand. the process having that much cpu is "mysql", the php-fpm gets a lot of instances too. the space between spikes is random. i tried to disable every plugin with no result. i have the website behind cloudflare, running on plesk/almaos. I used to have this much traffic and no spikes, i also change server and imported this website using the import tool from plesk and the spikes continue to happen. any ideas?