I am referring to this howto: http://www.howtoforge.com/caching-with-apaches-mod_cache-on-debian-lenny I activated cache and mem_cache, restarted apache and tried the test file you gave but the time is always refreshed so nothing is being cached, check it out here: http://zice.ro/cache.php any idea what could be interfering?
weird it doesn't work for me. tried chrome, safari, firefox, simply hit enter the number keeps going up. but if it works for you it must be a problem on my macbook...