Cache_Lite
Cache_Lite is a light-weight cache system. Cache_Lite uses file locking and anti-corruption tests. Another key advantage is that it installs from the PHP Extensions and Applications Repository (PEAR). On cPanel Linux servers, Cache_Lite can be installed from the PHP PEAR Package's icon from http://pear.php.net/package/Cache_Lite. Just click and it is ready to use. Cache_Lite is optimized for high-traffic websites so it is really fast and safe because it uses file locking and/or anti-corruption tests. You can find documentation from http://pear.php.net/manual/en/package.caching.cache-lite.php.