This is a demonstration on how You can swap web servers without downtime.
My use case was simple, I had to change the web server routings and handlers without stopping the service, and in this demo You can see how we start a "proxy" instance and pass the request to an "upstream" while continiously swapping out the backend for them.
git clone [email protected]:ArtgenIO/ProxyDemo.git
cd ProxyDemo
yarn install # or npm i
node index.js
then visit the http://localhost:7200 address. You will see the changing upstream IDs and can follow the events in the console.