Yeah, the entire premise of this kind of company is asking strangers to give you arbitrary code and then running it. I imagine there ares some important design decisions there that are not trivial to replicate. At it seems the author made _no_ attempt to replicate them, as he said anyone could knock his server over easily w/ a fork bomb.

I thought these type of interpreters ran in the user's browser. Cross-compile the interpreter to JS or webasm, stream it to the user after they click on which language to use. Built-in libraries could be streamed on-demand the same way or they can be bundled with the interpreter. It would solve the scalability and security problem.