Developing with Docker and inotify with Flask on M1 MacOS - extremely slow!

[wtfiwtz]

I had a quirky thing today where Flask would take roughly 11-13 minutes to boot - extremely slow and annoying! Basically I couldn't get anything done.

Turns out it was inotify issues where it Flask would deadlock on a particular folder in the container such as /app. This only seemed to affect an M1 MacBook, not a traditional Intel MacBook from a few years ago.

I switched to the Docker VMM virtualisation (away from Apple Virtualization) in Docker and this seemed to do the trick - for now! The other option was to remove watchdog from pyproject.toml or use a proper production server (such as gunicorn) that doesn't use the file monitoring / watching.

Hope this helps someone else one day!

[yoshiokatsuneo]

Thank you for your information !

I myself don't see the problem on the latest Redash / Docker Desktop with Apple Virtualization on M4 MacBook Pro...