Typical Expires, Etag, and Cache-control for Google Site Speed Test best results

site-speed-htaccess

## EXPIRES CACHING ##
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/jpg "access plus 1 month"
    ExpiresByType image/jpeg "access plus 1 month"
    ExpiresByType image/gif "access plus 1 month"
    ExpiresByType image/png "access plus 1 month"
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/pdf "access plus 1 month"
    ExpiresByType text/x-javascript "access plus 1 month"
    ExpiresByType application/x-shockwave-flash "access plus 1 month"
    ExpiresByType image/x-icon "access plus 1 year"
    ExpiresDefault "access plus 2 days"
</IfModule>
## EXPIRES CACHING ##

## Etags
Header unset ETag
FileETag None
## Etags

## CSS caching
<filesMatch ".(css)$">
    Header set Cache-Control "max-age=31536000, public"
</filesMatch>

## JS caching
<filesMatch ".(js)$">
    Header set Cache-Control "max-age=2628000, private"
</filesMatch>

## Image caching
<filesMatch ".(jpg|jpeg|png|gif|ico)$">
    Header set Cache-Control "max-age=86400, public"
</filesMatch>