htaccess mod_expires / mod_cache / mod_deflate / mod_headers

.htaccess

# ------------------------------------------------------------------------------
# 
# Curtousy of the Magento Support Center
# http://magentosupport.help/what-are-expires-headers-and-how-do-i-implement-them/
#
# ------------------------------------------------------------------------------


# ------------------------------------------------------------------------------
# | Mod Caching via Apache                                                     |
# ------------------------------------------------------------------------------

<IfModule mod_cache.c>
    <IfModule mod_mem_cache.c>
        CacheEnable mem /
        MCacheSize 4096
        MCacheMaxObjectCount 100
        MCacheMinObjectSize 1
        MCacheMaxObjectSize 2048
    </IfModule>
</IfModule> 


# ------------------------------------------------------------------------------
# | Proper MIME types for all files                                            |
# ------------------------------------------------------------------------------

<IfModule mod_mime.c>

  # Audio
    AddType audio/mp4                                   m4a f4a f4b
    AddType audio/ogg                                   oga ogg

  # JavaScript
    # Normalize to standard type (it's sniffed in IE anyways):
    # http://tools.ietf.org/html/rfc4329#section-7.2
    AddType application/javascript                      js jsonp
    AddType application/json                            json

  # Video
    AddType video/mp4                                   mp4 m4v f4v f4p
    AddType video/ogg                                   ogv
    AddType video/webm                                  webm
    AddType video/x-flv                                 flv

  # Web fonts
    AddType application/font-woff                       woff
    AddType application/vnd.ms-fontobject               eot

    # Browsers usually ignore the font MIME types and sniff the content,
    # however, Chrome shows a warning if other MIME types are used for the
    # following fonts.
    AddType application/x-font-ttf                      ttc ttf
    AddType font/opentype                               otf

    # Make SVGZ fonts work on iPad:
    # https://twitter.com/FontSquirrel/status/14855840545
    AddType     image/svg+xml                           svg svgz
    AddEncoding gzip                                    svgz

  # Other
    AddType application/octet-stream                    safariextz
    AddType application/x-chrome-extension              crx
    AddType application/x-opera-extension               oex
    AddType application/x-shockwave-flash               swf
    AddType application/x-web-app-manifest+json         webapp
    AddType application/x-xpinstall                     xpi
    AddType application/xml                             atom rdf rss xml
    AddType image/webp                                  webp
    AddType image/x-icon                                ico
    AddType text/cache-manifest                         appcache manifest
    AddType text/vtt                                    vtt
    AddType text/x-component                            htc
    AddType text/x-vcard                                vcf

</IfModule>


# ------------------------------------------------------------------------------
# | ETag removal                                                               |
# ------------------------------------------------------------------------------

# Since we're sending far-future expires headers (see below), ETags can
# be removed: http://developer.yahoo.com/performance/rules.html#etags.

# `FileETag None` is not enough for every server.
<IfModule mod_headers.c>
    Header unset ETag
  
  <filesMatch "\.(ico|jpe?g|png|gif|swf)$">
    Header set Cache-Control "max-age=2592000, public"
  </filesMatch>
  <filesMatch "\.(css)$">
    Header set Cache-Control "max-age=604800, public"
  </filesMatch>
  <filesMatch "\.(js)$">
    Header set Cache-Control "max-age=216000, private"
  </filesMatch>
  <filesMatch "\.(x?html?|php)$">
    Header set Cache-Control "max-age=600, private, must-revalidate"
  </filesMatch>
</IfModule>

FileETag None

# ------------------------------------------------------------------------------
# | Expires headers (for better cache control)                                 |
# ------------------------------------------------------------------------------

# The following expires headers are set pretty far in the future. If you don't
# control versioning with filename-based cache busting, consider lowering the
# cache time for resources like CSS and JS to something like 1 week.

<IfModule mod_expires.c>

    ExpiresActive on
    ExpiresDefault                                      "access plus 1 month"

  # CSS
    ExpiresByType text/css                              "access plus 1 year"

  # Data interchange
    ExpiresByType application/json                      "access plus 0 seconds"
    ExpiresByType application/xml                       "access plus 0 seconds"
    ExpiresByType text/xml                              "access plus 0 seconds"

  # Favicon (cannot be renamed!)
    ExpiresByType image/x-icon                          "access plus 1 week"

  # HTML components (HTCs)
    ExpiresByType text/x-component                      "access plus 1 month"

  # HTML
    ExpiresByType text/html                             "access plus 0 seconds"

  # JavaScript
    ExpiresByType application/javascript                "access plus 1 year"

  # Manifest files
    ExpiresByType application/x-web-app-manifest+json   "access plus 0 seconds"
    ExpiresByType text/cache-manifest                   "access plus 0 seconds"

  # Media
    ExpiresByType audio/ogg                             "access plus 1 month"
    ExpiresByType image/gif                             "access plus 1 month"
    ExpiresByType image/jpeg                            "access plus 1 month"
    ExpiresByType image/png                             "access plus 1 month"
    ExpiresByType video/mp4                             "access plus 1 month"
    ExpiresByType video/ogg                             "access plus 1 month"
    ExpiresByType video/webm                            "access plus 1 month"

  # Web feeds
    ExpiresByType application/atom+xml                  "access plus 1 hour"
    ExpiresByType application/rss+xml                   "access plus 1 hour"

  # Web fonts
    ExpiresByType application/font-woff                 "access plus 1 month"
    ExpiresByType application/vnd.ms-fontobject         "access plus 1 month"
    ExpiresByType application/x-font-ttf                "access plus 1 month"
    ExpiresByType font/opentype                         "access plus 1 month"
    ExpiresByType image/svg+xml                         "access plus 1 month"

</IfModule>


<IfModule mod_deflate.c>
############################################
## enable apache served files compression
## http://developer.yahoo.com/performance/rules.html#gzip

    # Insert filter on all content
    SetOutputFilter DEFLATE
    # Insert filter on selected content types only
    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript

    # Netscape 4.x has some problems...
    BrowserMatch ^Mozilla/4 gzip-only-text/html

    # Netscape 4.06-4.08 have some more problems
    BrowserMatch ^Mozilla/4\.0[678] no-gzip

    # MSIE masquerades as Netscape, but it is fine
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

    # Don't compress images
    SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary

    # Make sure proxies don't deliver the wrong content
    Header append Vary User-Agent env=!dont-vary
</IfModule>


# ------------------------------------------------------------------------------
# | GZip Compression (for faster page transfers)                               |
# ------------------------------------------------------------------------------

# GZip Compression
# compress text, html, javascript, css, xml:
#
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
</IfModule>
 
# Limit bandwidth consumption
<IfModule mod_php5.c>
    php_value zlib.output_compression 16386
</IfModule>