PieFed dev here.

It'll be interesting to see how Python performs.

There's some fun stuff you can do with compiling Python into C. e.g. https://cython.org/ or https://docs.exaloop.io/codon/. But I don't see a need for it as PieFed doesn't really crunch numbers much. Mastodon has a Ruby backend. Kbin uses PHP. Until you get really massive the choice of language doesn't really make a huge difference to performance as most of the work in most web apps is done by the database.

I am a little bit concerned about the limited support for asynchronous I/O in the Flask framework, which could limit scalability at some point. But there are options for the future. Quart claims to be a drop-in replacement for Flask.

In any case, performance is just one factor. For a FOSS project to be successful long term it needs contributions from other developers and with the massive pool of Python developers there are, hopefully I'll be getting some help soon. Also along those lines I have deliberately chosen:

• to code as simply and stupidly as possible, to make it accessible to most skill levels.
• No complicated frameworks, fancy algorithms, or esoteric design patterns. Model View Controller, baby.
• No frontend build process or tool chain (vanilla JS only. No npm).
• Few third party dependencies, only Redis and Postgresql. Mostly.

All this makes setting up an initial development environment, finding the bit you want to change and testing it out fairly quick and easy.

I hope it's these choices that lead to an absolute blizzard of contributions from many people and that's where the true strength of the project will come from.