Do you have any idea how to add a custom garbage collection time? In the latest wp-super cache you can bring it to a max of 30 mins, but every time when that time expires, due to big homepage i have, the user that visits the site then it will encounter a big page load, so i would love to change this garbage collection to several hours. How can i do it? I played with the files, didn't saw anything so far.
If expiry time is more than 1800 seconds (half an hour), garbage collection will be done every 10 minutes, otherwise it will happen 10 seconds after the expiry time above.