With Dyalog's Conga, Rumba or Plodder you might well decide to serve HTTP requests with an application written in Dyalog APL.
However, if your application serves requests from the Internet (as opposed to an Intranet), it is strongly recommended to hide your application behind an industrial-strength web server like Apache.
This comes not only with benefits in terms of security, and stronger defences against something like DDOS attacks, it also offers an easy way to implement load balancing.
Apache can be used this way because it can act as a reverse proxy server, sometimes called a gateway server.
Let's assume that your application is listening on port 8081.
You need to add the following lines to the configuration file for your specific website:
ProxyPreserveHost on
ProxyPass / http://localhost:8081/
ProxyPassReverse / http://localhost:8081/This file is typically found in /etc/apache2/sites-available.
In /etc/apache2/sites-enabled there should be just a link pointing to /etc/apache2/sites-available.
The ProxyPass directive is doing the magic.
The ProxyPassReverse directive ensures that the Location: headers generated from the backend (your Tatin Server) are modified to point to the reverse proxy instead of itself.
For details see the “Reverse Proxy Guide” and Apache Module mod_proxy