Description:

mod_cache_disk implements a disk based storage manager for mod_cache.

The headers and bodies of cached responses are stored separately on disk,
in a directory structure derived from the md5 hash of the cached URL.

Multiple content negotiated responses can be stored concurrently, however
the caching of partial content is not yet supported by this module.

Atomic cache updates to both header and body files are achieved without
the need for locking by storing the device and inode numbers of the body
file within the header file. This has the side effect that cache entries
manually moved into the cache will be ignored.

The htcacheclean tool is provided to list cached URLs, remove cached URLs,
or to maintain the size of the disk cache within size and/or inode limits. The
tool can be run on demand, or can be daemonized to offer continuous monitoring
of directory sizes.