We are using Apache that's one problem 
I saw configure in Apache like Nginx is not easy. Found https://johnleach.co.uk/posts/2012/05/15/rate-limiting-with-apache-and-mod-security/ https://coderwall.com/p/eouy3g/using-mod_evasive-to-rate-limit-apache
Beside I want more control, for example, I want certain service should be available for certain period