Caching Images, JS and CSS in Apache using deflate

I am currently caching my CSS, JS and images using deflate in my Apache configuration.

Here's my code:

AddOutputFilterByType DEFLATE text/plain

AddOutputFilterByType DEFLATE text/html



AddOutputFilterByType DEFLATE text/xml

AddOutputFilterByType DEFLATE application/xml

AddOutputFilterByType DEFLATE application/xhtml+xml

AddOutputFilterByType DEFLATE application/rss+xml



AddOutputFilterByType DEFLATE text/css

AddOutputFilterByType DEFLATE application/javascript

AddOutputFilterByType DEFLATE application/x-javascript

Now when I check my header I see:

Host                www.domain.com

User-Agent          Mozilla/5.0 (X11; Linux i686; rv:6.0.2) Gecko/20100101 Firefox/6.0.2

Accept              text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language     en-us,en;q=0.5

Accept-Encoding     gzip, deflate

Accept-Charset      ISO-8859-1,utf-8;q=0.7,*;q=0.7

Connection          keep-alive

If-Modified-Since   Fri, 30 Sep 2011 01:05:01 GMT

If-None-Match       "124741af-1c4b9-4ae1136f3f9d0"

Cache-Control       max-age=0

Everything looks good, the Accept-Encoding is gzip, deflate which is what I want but now I see the Cache-Control is max-age=0 .

Will that defeat the purpose of caching using deflate? Is that mean it's only caching for 1 day and the next day it won't cache it or it will have to reload it?

Note: My images rarely change, my CSS and JS change once a week.

Source: Tips4all