.htaccess

ErrorDocument 404 /404.html

<IfModule mod_expires.c>

  ExpiresActive on
  
  ExpiresDefault  "access plus 1 month"
  
  # JavaScript

  ExpiresByType application/javascript                "access plus 1 year"
  ExpiresByType application/x-javascript              "access plus 1 year"
  ExpiresByType text/javascript                       "access plus 1 year"

  ExpiresByType text/html                             "modification"
  
</IfModule>

<IfModule mod_headers.c>
  <filesmatch "\.(css|jpg|jpeg|js|png)$">
    Header set Cache-Control "max-age=31536000, public"
  </filesmatch>
  <filesmatch "\.(html|xml)$">
    Header set Cache-Control "no-store, max-age=0"
  </filesmatch>
</IfModule>


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

# FileETag None is not enough for every server.
<IfModule mod_headers.c>
  Header unset ETag
</IfModule>

# Since we're sending far-future expires, we don't need ETags for
# static content.
#   developer.yahoo.com/performance/rules.html#etags
FileETag None

<IfModule mod_headers.c>
  Header unset Server
</IfModule>