.htaccess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ index.php [NC,L]
</IfModule>

php_value upload_max_filesize 20M
php_value post_max_size 20M
php_value memory_limit 256M

<IfModule !mod_rewrite.c>
ErrorDocument 404 /index.php
</IfModule>

AddDefaultCharset UTF-8
Header unset Pragma
FileETag None
Header unset ETag

# 1 YEAR
<filesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|swf|mp3|mp4)$">
Header set Cache-Control "public"
Header set Expires "Thu, 29 Jun 2013 22:00:00 GMT"
Header set Last-Modified "Thu, 25 Jun 2013 22:00:00 GMT"
</filesMatch>

# 2 HOURS
<filesMatch "\.(html|htm|xml|txt|xsl)$">
Header set Cache-Control "max-age=7200, must-revalidate"
</filesMatch>

# CACHED FOREVER
# MOD_REWRITE TO RENAME EVERY CHANGE
<filesMatch "\.(js|css)$">
Header set Cache-Control "public"
Header set Expires "Thu, 15 Apr 2013 20:00:00 GMT"
Header unset Last-Modified
</filesMatch>
<IfModule mod_headers.c>
<FilesMatch "\.(js|css|xml|gz)$">
Header append Vary: Accept-Encoding
</FilesMatch>
</IfModule>

<ifModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file \.(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-E ncoding:.*gzip.*
</ifModule>

# MAINTENANCE-PAGE REDIRECT
<IfModule mod_rewrite.c>
 RewriteEngine on
 RewriteCond %{REMOTE_ADDR} !^123\.456\.789\.000 
 RewriteCond %{REMOTE_ADDR} !^123\.456\.789\.000
 RewriteCond %{REMOTE_ADDR} !^123\.456\.789\.000
 RewriteCond %{REQUEST_URI} !/maintenance.html$ [NC]
 RewriteCond %{REQUEST_URI} !\.(jpe?g?|png|gif) [NC]
 RewriteRule .* /maintenance.html [R=302,L]
</IfModule>