http://example.com/min/const_style_1357550492.cssgz
GET /min/const_style_1357550492.cssgz HTTP/1.1
Host: example.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0
Accept: text/css,*/*;q=0.1
Accept-Language: ru-ru,ru;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://example.com/
Cookie: language=ru; currency=USD; __atuvc=1%7C2; PHPSESSID=871c0ec9effd963957467311f476dc72; _ym_visorc=w
DNT: 1
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 07 Jan 2013 09:56:56 GMT
Content-Type: text/css
Content-Length: 5871
Last-Modified: Mon, 07 Jan 2013 09:21:32 GMT
Connection: keep-alive
Cache-Control: max-age=604800, public
Expires: Mon, 14 Jan 2013 09:56:56 GMT
X-Powered-By: PleskLin
Accept-Ranges: bytes
Options -Indexes
<FilesMatch "\.(tpl|ini|log)">
Order deny,allow
Deny from all
</FilesMatch>
RewriteEngine On
RewriteBase /
RewriteRule ^sitemap.xml$ index.php?route=feed/google_sitemap [L]
RewriteRule ^googlebase.xml$ index.php?route=feed/google_base [L]
RewriteRule ^yandexmarket.xml$ index.php?route=feed/yandex_market [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^?]*) index.php?_route_=$1 [L,QSA]
Options All -Indexes
AddType text/css cssgz
AddType text/javascript jsgz
AddEncoding x-gzip .cssgz .jsgz
# for all files in min directory
FileETag None
# Cache for a week, attempt to always use local copy
<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault A604800
</IfModule>
<IfModule mod_headers.c>
Header unset ETag
Header set Cache-Control "max-age=604800, public"
</IfModule>
На shared-хостинге все статические файлы отдаются вебсервером nginx. Данные правила для .htaccess работать не будут.