Caching with mod_headers 1.3|2.0|2.2

# 3 Month

Header set Cache-Control "max-age=7257600"

# 1 Week

Header set Cache-Control "max-age=604800"

# 10 Minutes

Header set Cache-Control "max-age=600"

# NONE

Header unset Cache-Control
Header unset Expires
Header unset Last-Modified
FileETag None
Header unset Pragma



摘自：http://www.askapache.com/htaccess/speed-up-sites-with-htaccess-caching.html