MAGETWO-31196: ETag support on frontend, expiration/lifetime management

Author: zanilee

.htaccess

@@ -166,7 +166,53 @@
 ## Add default Expires header
 ## http://developer.yahoo.com/performance/rules.html#expires
 
-    ExpiresDefault "access plus 1 year"
+    <FilesMatch .*\.(ico|jpg|jpeg|png|gif|svg|js|css|swf|ttf|otf|woff|woff2|ogg|mp4|webm)$>
+        Header append Cache-Control private
+    </FilesMatch>
+
+    ExpiresActive On
+
+    <FilesMatch \.(html|xhtml|xml|shtml|phtml|php|txt)$>
+        ExpiresDefault "access plus 0 seconds"
+    </FilesMatch>
+
+    ExpiresByType text/html "access plus 0 seconds"
+
+    # Data
+    ExpiresByType text/xml "access plus 0 seconds"
+    ExpiresByType application/xml "access plus 0 seconds"
+    ExpiresByType application/json "access plus 0 seconds"
+
+    # MFavicon, images, video, audio
+    <FilesMatch \.(ico|gif|png|jpg|jpeg|ogg|mp4|mkv|flv|swf|wmv|asf|asx|wma|wax|wmx|wm)$>
+        ExpiresDefault "access plus 1 year"
+    </FilesMatch>
+    ExpiresByType image/gif "access plus 1 year"
+    ExpiresByType image/png "access plus 1 year"
+    ExpiresByType image/jpg "access plus 1 year"
+    ExpiresByType image/jpeg "access plus 1 year"
+    ExpiresByType image/svg "access plus 1 year"
+    ExpiresByType video/ogg "access plus 1 year"
+    ExpiresByType audio/ogg "access plus 1 year"
+    ExpiresByType video/mp4 "access plus 1 year"
+    ExpiresByType video/webm "access plus 1 year"
+
+    # Fonts
+    <FilesMatch \.(eot|ttf|otf|svg|woff|woff2)$>
+        ExpiresDefault "access plus 1 year"
+    </FilesMatch>
+    ExpiresByType application/x-font-ttf "access plus 1 year"
+    ExpiresByType font/opentype "access plus 1 year"
+    ExpiresByType application/x-font-woff "access plus 1 year"
+    ExpiresByType image/svg+xml "access plus 1 year"
+    ExpiresByType application/vnd.ms-fontobject "access plus 1 year"
+
+    # CSS, JavaScript
+    <FilesMatch \.(css|js)$>
+        ExpiresDefault "access plus 1 year"
+    </FilesMatch>
+    ExpiresByType text/css "access plus 1 year"
+    ExpiresByType application/javascript "access plus 1 year"
 
 </IfModule>
 
@@ -188,3 +234,4 @@
 ## http://developer.yahoo.com/performance/rules.html#etags
 
     #FileETag none
+    #FileETag MTime Size