Is it possible to switch the upstream proxy host without restarting the server? I'm currently using the anonymizeProxy helper like so:

const proxyChain = require('proxy-chain');

const user = '...';
const pass = '...';
const vpnHost = process.argv[2];
const oldProxyUrl = `http://${user}:${pass}@${vpnHost}:80`;
const newProxyUrl = proxyChain.anonymizeProxy(oldProxyUrl);

function 

It would be nice to have an optional parameter to change the path of the Maxmind DB. We have a paid license and a more accurate database than the GeoLite edition

There's many tutorials online, but I want to create this in Serbian language (after English).
Tutorials should explain in short terms how it work, and show examples for different types.
This should contain example code for different ruby gems and their best use case (simple scrap, JavaScript etc...)
Quality over Quantity, any help is appreciated.