HTAccess file with ETag, Cache, GZip and custom routing

.htaccess

<ifModule mod_deflate.c>  
    AddOutputFilterByType DEFLATE text/html text/plain text/xml application/xml application/xhtml+xml text/css text/javascript application/javascript application/x-javascript application/json
</ifModule>

Header unset ETag
FileETag None

<IfModule mod_rewrite.c>
	RewriteEngine on
    RewriteCond %{REQUEST_FILENAME} -s [OR]
    RewriteCond %{REQUEST_FILENAME} -l [OR]
    RewriteCond %{REQUEST_FILENAME} -d
    RewriteRule ^.*$ - [NC,L]

    RewriteRule ^(.*) index.html [NC,L]
</IfModule>

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