LazyTechie

WP-Super Cache is a must have plugin for all wordpress users. This plugin generates static html files from your dynamic WordPress blog. After a html file is generated your web server will serve that file instead of processing the comparatively heavier and more expensive WordPress PHP scripts. Making sure that your blog will load with a great speed.. Click here to download WP Super Cache plugin.

How To Install WP-Super Cache Plugin:

1. You should have the Apache mod mime and mod rewrite modules installed and WordPress fancy permalinks enabled. PHP safe mode should be disabled. If any of those are missing or off you can still use the slower WP-Cache part of the plugin.
2. If you have WP-Cache installed already, please disable it. Edit wp-config.php and make sure the WP_CACHE define is deleted, and remove the files wp-content/wp-cache-config.php and wp-content/advanced-cache.php. These will be recreated when you install this plugin.
3. Upload this directory to your plugins directory. It will create a ‘wp-content/plugins/wp-super-cache/’ directory.
4. If you are using WordPress MU you will need to install this in ‘wp-content/mu-plugins/wp-super-cache/’ and the file wp-cache.php must be copied into the mu-plugins directory.
5. WordPress users should go to their Plugins page and activate "WP Super Cache".
6. Now go to Settings->WP Super Cache and enable caching. If you see an error message or a blank screen you may need to fix it. See the "FAQ" section later in this readme for instructions.

7. mod_rewrite rules will be inserted into your .htaccess file. Look in your web root directory for this file. It should look similar to this:

   -----------------.htaccess-----------------
   RewriteEngine On
   RewriteBase /
   
   RewriteCond %{REQUEST_METHOD} !=POST
   RewriteCond %{QUERY_STRING} !.*=.*
   RewriteCond %{HTTP_COOKIE} !^.*(comment_author_|wordpress|wp-postpass_).*$
   RewriteCond %{HTTP:Accept-Encoding} gzip
   RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html.gz -f
   RewriteRule ^(.*) /wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html.gz [L]
   
   RewriteCond %{REQUEST_METHOD} !=POST
   RewriteCond %{QUERY_STRING} !.*=.*
   RewriteCond %{QUERY_STRING} !.*attachment_id=.*
   RewriteCond %{HTTP_COOKIE} !^.*(comment_author_|wordpress|wp-postpass_).*$
   RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html -f
   RewriteRule ^(.*) /wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html [L]
   
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteRule . /index.php [L]
   -----------------.htaccess-----------------
   

8. After you have enabled the plugin, look for the file "wp-content/cache/.htaccess". If it’s not there you must create it. It should read:

   # BEGIN supercache
   <IfModule mod_mime.c>
     AddEncoding gzip .gz
     AddType text/html .gz
   </IfModule>
   <IfModule mod_deflate.c>
     SetEnvIfNoCase Request_URI \.gz$ no-gzip
   </IfModule>
   <IfModule mod_headers.c>
     Header set Cache-Control 'max-age=300, must-revalidate'
   </IfModule>
   <IfModule mod_expires.c>
     ExpiresActive On
     ExpiresByType text/html A300
   </IfModule>
   
   # END supercache
   

9. Apache must be configured to allow the modules above. If you receive a "500 internal error" when serving requests to anonymous users you need to dig into your Apache configuration. This configuration in my virtual host works for me:

   <Directory /home/www/>
   AllowOverride All
   </Directory>
   

10. wp-content/advanced-cache.php loads the caching engine. This file is generated by the plugin. Make sure the path in the include_once() is correct.