[fabian]

Du kan ju börja med att kolla sajten med Google Pagespeed, då kommer du att få se delar av problemen, t.ex. om bilder, js etc. inte cachas mm. Du får också konkreta tips på hur du kan förbättra det.

Det finns ett bra plugin till Wordpress som heter W3 Total Cache*som kan snabba upp wordpress-sajter väldigt mycket.

Kör du apache kan du lägga till följande i din .htaccess fil:

<IfModule mod_expires.c>
	ExpiresActive On
	ExpiresByType text/html "access plus 5 minutes"
	ExpiresByType image/gif "access plus 7 day"
	ExpiresByType image/png "access plus 7 day"
	ExpiresByType image/jpg "access plus 7 day"
	ExpiresByType image/jpeg "access plus 7 day"
	ExpiresByType image/ico "access plus 7 day"
	ExpiresByType text/css "access plus 7 day"
	ExpiresByType text/javascript "access plus 7 day"
	ExpiresByType application/x-javascript "access plus 7 day"
</IfModule>

<IfModule mod_headers.c>
	Header unset ETag
	RequestHeader unset If-Modified-Since
	RequestHeader unset If-None-Match
	FileETag None
</IfModule>

<IfModule mod_deflate.c>
	SetOutputFilter DEFLATE
	BrowserMatch ^Mozilla/4 gzip-only-text/html
	BrowserMatch ^Mozilla/4\.0[678] no-gzip
	BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
	# Don't compress images, movies or zip files
	SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
	SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
	SetEnvIfNoCase Request_URI \.(?:avi|mov|mp3|mp4|rm|flv|swf|mp?g)$ no-gzip dont-vary
	<IfModule mod_headers.c>
		# properly handle requests coming from behind proxies
		Header append Vary User-Agent
	</IfModule>
</IfModule>

<IfModule mod_deflate.c>
	AddOutputFilterByType DEFLATE text/plain
	AddOutputFilterByType DEFLATE text/html
	AddOutputFilterByType DEFLATE text/xml
	AddOutputFilterByType DEFLATE text/css
	AddOutputFilterByType DEFLATE text/javascript
	AddOutputFilterByType DEFLATE application/xml
	AddOutputFilterByType DEFLATE application/xhtml+xml
	AddOutputFilterByType DEFLATE application/rss+xml
	AddOutputFilterByType DEFLATE application/atom_xml
	AddOutputFilterByType DEFLATE application/javascript
	AddOutputFilterByType DEFLATE application/x-javascript
	AddOutputFilterByType DEFLATE application/x-shockwave-flash
</IfModule>