Çok çok iyi anladığım bişey değil ama ben gzip değil de deflate kullanıyorum.

Aşağıdaki htaccess kodunu inceleyebilirsiniz.

<IfModule mod_expires.c>
FileETag MTime Size
AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css application/xml application/xhtml+xml application/rss+xml application/javascript application/x-javascript
ExpiresActive On
ExpiresDefault "access plus 1 seconds"
ExpiresByType text/html "access plus 600 seconds"
ExpiresByType application/xhtml+xml "access plus 600 seconds"
ExpiresByType text/css "access plus 1 month"
ExpiresByType text/javascript "access plus 1 month "
ExpiresByType application/javascript "access plus 1 month"
ExpiresByType application/x-javascript "access plus 1 month"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType image/gif "access plus 1 year"
</IfModule>


<ifmodule mod_headers.c>
# Keep alive
Header set Connection keep-alive
# Proksi Gecerli
Header append Vary User-Agent env=!dont-vary
# Web Sayfasi Dosyalari
<filesmatch ".(css|js|woff|ttf|eot)$">
Header set Cache-Control "max-age=2678400, public"
</filesmatch>
# Resimler
<filesmatch ".(jpg|jpeg|gif|png|ico)$">
Header set Cache-Control "max-age=2678400, public"
</filesmatch>
# Sayfalar
<filesmatch ".(html|htm)$">
Header set Cache-Control "max-age=7200, public, must-revalidate"
</filesmatch>
# Belgeler ve Dokuman
<filesmatch ".(pdf|ppt|doc|docx|xls)$">
Header set Cache-Control "max-age=86400, public"
</filesmatch>
# Medya Icerikleri
<filesmatch ".(mpeg|swf|flv|mov|mp3|wmv)$">
Header set Cache-Control "max-age=86400, public"
</filesmatch>
</ifmodule>