default.htaccess

<ifModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/php
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
</ifModule>

<ifModule mod_expires.c>
ExpiresActive On
ExpiresByType image/png "access plus 10 days"
ExpiresByType image/jpg "access plus 10 days"
ExpiresByType image/jpeg "access plus 50 days"
ExpiresByType image/ico "access plus 10 month"
ExpiresByType image/gif "access plus 30 days"
ExpiresByType text/javascript "access plus 6 days"
ExpiresByType application/javascript "access plus 6 days"
ExpiresByType text/css "access plus 6 days"
</ifModule>

RewriteEngine On
RewriteRule ^(index.php|robots.txt|favicon.ico|css|images|js) - [PT,L]
RewriteCond %{REQUEST_FILENAME} !(\.png|\.swf|\.js|\.gif|\.jpe?g|\.css)
RewriteRule ^(.*)$ index.php/$1 [QSA]