My Magento store front server have no routine to clear cache, what result in slow Magento(cause it take to long to read cache files). Front server do not run cron.php, all jobs run over backend server.
Today, i am cleaning Magento front server
var/cache folder manually to speed up Magento and don`t let cache files grow too much.
How can i automate this routine? Create a cron to rm -rf * from var/cache one time a day? There is a custom module to help with this issue?