mod_expires

mod_expires is used to add an expiration date to content on your site by adding an Expires header to the HTTP response. Web browsers or cache servers won’t cache expired content.

Get Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.