Enable Keep Alive for faster web speed Apache and Nginx

There are 2 ways to enable Keep Alive On at Apache server, with .htaccess and httpd.conf

Enable keep-alive On at Apache with httpd.conf

Keep Alive Default configuration is Off, we must change it to On

vi /etc/httpd/conf/httpd.conf

Find KeepAlive sentence and edit Off to On

.....................................
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
# KeepAlive Off
KeepAlive On
......................................

Restart Apache to effect the changes

#vi service httpd restart

Enable keep-alive on Apache server with .htaccess

This is alternative if we do not have access to server. Add code below to .htaccess

<ifModule mod_headers.c>
Header set Connection keep-alive
</ifModule>

Enable keep-alive On Nginx with nginx.conf

By default NGINX supports keep-alive, add this line below to nginx configuration

#vi etc/nginx/nginx.conf

# Keep Alive
keepalive_timeout 65;
keepalive_requests 100000;
sendfile on;
tcp_nopush on;
tcp_nodelay on;