... This document supplements the mod_cache , mod_disk_cache , mod_mem_cache , mod_file_cache and htcacheclean reference documentation. ... As of Apache HTTP server version 2.2 mod_cache and mod_file_cache are no longer marked experimental and are considered suitable for production use. ... As mod_file_cache presents a relatively simple caching implementation, apart from the specific sections on CacheFile and MMapFile , the explanations in this guide cover the mod_cache caching architecture. ...