Apache HTTP Server - /etc/apache2/mods-available/cache_disk.conf

# cache cleaning is done by htcacheclean, which can be configured in
# /etc/default/apache2
#
# For further information, see the comments in that file,
# /usr/share/doc/apache2/README.Debian, and the htcacheclean(8)
# man page.

# This path must be the same as the one in /etc/default/apache2
CacheRoot /var/cache/apache2/mod_cache_disk

# This will also cache local documents. It usually makes more sense to
# put this into the configuration for just one virtual host.
#CacheEnable disk /


# The result of CacheDirLevels * CacheDirLength must not be higher than
# 20. Moreover, pay attention on file system limits. Some file systems
# do not support more than a certain number of inodes and
# subdirectories (e.g. 32000 for ext3)
CacheDirLevels 2
CacheDirLength 1