a long-ish time ago I built a basic site and API to run a couple of web servers and template engines with a user-specified configuration and get the output directly into the browser.

While I liked the minimal solution (some static HTML with a simple JSON API), I wanted to build out some more features, like saved snippets and, crucially, rate limiting for anonymous users. So I built a small Django app to handle all of that.

Somewhat accidentally this also lead to me building a custom "function as a service" backend thingy that allows for multiple, limited and timed, processes inside each execution.

So now it can do all that, while at the same time allowing me to add more tools in minutes, instead of one big messy script in ye olden ways.

Anything you would like to see a playground for?