adding ExpiresDefault to .htaccess file...

Apache: apply rules to a URL before they're rewritten...

Running a command on Apache2 not sure about the result...

Apache: How to add Expires headers to files without mod_expires installed...

Explanation for expires header...

.htaccess for compression, browser caching, proxy caching, etc...

yslow still not giving me an A for expires header in apache httpd even though I added them...