原文(source): Web Hosting Talk - View Single Post - FEATURED wp-login.php issue
You should be able to install Varnish to help limit wp-login.php access.
You should be able to configure default.vlc to not cache website and pass requests.
Varnish is capable of having modules, called Vmods.
The Throttle Vmod can throttle requests to files, ie Wordpress login, Drupal login, Joomla and other CMS's.
Here are the Links.
https://www.varnish-cache.org/vmod/throttle
https://github.com/nand2/libvmod-throttle
If requests are hitting Varnish, Apache load will drop significantly.
It beats having to ask all your customers to apply .htaccess ip login. Plus it prevent, "My IP changed and can't login" tickets.
Just an idea.