怎样优化Apache的.htaccess文件

<ifmodule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css application/javascript
</ifmodule>

<ifmodule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/jpg "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    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>

Options -Indexes

RewriteEngine On
RewriteBase /
RewriteRule ^index\.html$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.html [L]

KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 5

<Files "config.php">
    Order allow,deny
    Deny from all
</Files>

LoadModule security2_module modules/mod_security2.so
SecRuleEngine On

# Example: Disable if not needed
# LoadModule autoindex_module modules/mod_autoindex.so
# LoadModule dir_module modules/mod_dir.so
# LoadModule mime_module modules/mod_mime.so

<IfModule mod_headers.c>
    Header set Cache-Control "max-age=31536000, public"
</IfModule>

LogLevel warn
CustomLog "|/usr/sbin/cronolog /var/log/apache2/access.log.%Y-%m-%d" combined
ErrorLog "|/usr/sbin/cronolog /var/log/apache2/error.log.%Y-%m-%d"