kodun daha detaylısı .htaccess in sonuna ekleyebilirsiniz.
# Enable GZIP
AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
# Expires Headers - 2678400s = 31 days
ExpiresActive On
ExpiresDefault "access plus 2678400 seconds"
ExpiresByType text/html "access plus 7200 seconds"
ExpiresByType image/gif "access plus 2678400 seconds"
ExpiresByType image/jpeg "access plus 2678400 seconds"
ExpiresByType image/png "access plus 2678400 seconds"
ExpiresByType text/css "access plus 750000 seconds"
ExpiresByType text/javascript "access plus 2678400 seconds"
ExpiresByType application/x-javascript "access plus 2678400 seconds"
# Cache Headers
# Cache specified files for 31 days
Header set Cache-Control "max-age=2678400, public"
# Cache HTML files for a couple hours
Header set Cache-Control "max-age=7200, private, must-revalidate"
# Cache PDFs for a day
Header set Cache-Control "max-age=86400, public"
# Cache Javascripts for 31 days
Header set Cache-Control "max-age=2678400, private"
Konuyu hortlatıcam ama :D gtmetrix de tön bellekleme 42 ydi.Kodu uyguladım 83 e çıktı.Dostum emeğine ellerine kollarına sağlık.