Apache caching

<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access 7 days"
ExpiresByType application/javascript "access plus 1 year"
ExpiresByType text/javascript "access plus 1 year"
ExpiresByType text/css "access plus 1 year"
ExpiresByType text/html "access plus 7 day"
ExpiresByType text/x-javascript "access 1 year"
ExpiresByType image/gif "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType image/jpg "access plus 1 year"
ExpiresByType image/x-icon "access 1 year"
ExpiresByType application/x-shockwave-flash "access 1 year"
</IfModule>

# Cache-Control
<ifModule mod_headers.c>
# 30 days
<filesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>
# 30 days
<filesMatch "\.(css|js)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>
# 2 days
<filesMatch "\.(xml|txt)$">
Header set Cache-Control "max-age=172800, public, must-revalidate"
</filesMatch>
# 1 day
<filesMatch "\.(html|htm|php)$">
Header set Cache-Control "max-age=172800, private, must-revalidate"
</filesMatch>
</ifModule>

FileETag MTime Size
<ifmodule mod_expires.c>
<filesmatch ".(jpg|jpeg|gif|png|ico|css|js)$">
ExpiresActive on
ExpiresDefault "access plus 1 year"
</filesmatch>
</ifmodule>

<IfModule mod_setenvif.c>
BrowserMatch "MSIE" force-no-vary
BrowserMatch "Mozilla/4.[0-9]{2}" force-no-vary
</IfModule>

<IfModule mod_deflate.c> 
AddOutputFilterByType DEFLATE text/html text/xml text/css text/plain
AddOutputFilterByType DEFLATE image/svg+xml application/xhtml+xml application/xml
AddOutputFilterByType DEFLATE application/rdf+xml application/rss+xml application/atom+xml
AddOutputFilterByType DEFLATE text/javascript application/javascript application/x-javascript application/json
AddOutputFilterByType DEFLATE application/x-font-ttf application/x-font-otf x-font/eot x-font/ashx
AddOutputFilterByType DEFLATE font/truetype font/opentype 
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html 
</IfModule>