Speed Up WordPress through .htaccess

Header unset ETag
FileETag None

# BEGIN Expire headers
<ifModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 2592000 seconds"
    ExpiresByType image/x-icon "access plus 2592000 seconds"
    ExpiresByType image/jpeg "access plus 2592000 seconds"
    ExpiresByType image/png "access plus 2592000 seconds"
    ExpiresByType image/gif "access plus 2592000 seconds"
    ExpiresByType application/x-shockwave-flash "access plus 2592000 seconds"
    ExpiresByType text/css "access plus 604800 seconds"
    ExpiresByType text/javascript "access plus 216000 seconds"
    ExpiresByType application/javascript "access plus 216000 seconds"
    ExpiresByType application/x-javascript "access plus 216000 seconds"
    ExpiresByType application/xhtml+xml "access plus 600 seconds"
    ExpiresByType text/html "access plus 1 day"
</ifModule>
# END Expire headers

# BEGIN Cache-Control Headers
<ifModule mod_headers.c>
    <filesMatch "\.(ico|jpe?g|png|gif|swf)$">
        Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(css)$">
        Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(js)$">
        Header set Cache-Control "private"
    </filesMatch>
    <filesMatch "\.(x?html?|php)$">
        Header set Cache-Control "private, must-revalidate"
    </filesMatch>
</ifModule>
# END Cache-Control Headers

# BEGIN GZIP (May not work on all servers)
# mod_gzip compression (legacy, Apache 1.3)
<IfModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file \.(html?|xml|txt|css|js)$
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-Encoding:.*gzip.*
</IfModule>
# END GZIP

# DEFLATE compression
<IfModule mod_deflate.c>
# Set compression for: html,txt,xml,js,css
AddOutputFilterByType DEFLATE text/html text/plain text/xml application/xml application/xhtml+xml text/javascript text/css application/x-javascript
# Deactivate compression for buggy browsers
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4.0[678] no-gzip
BrowserMatch bMSIE !no-gzip !gzip-only-text/html
# Set header information for proxies
Header append Vary User-Agent
</IfModule>
# END DEFLATE