I run a web-dev consulting company on the side and I have a few apps that use Celery queues. The main reason you’d want to use celery is to handle more intensive tasks asynchronously in the background.

Some example from my apps:

• user requests a report: celery task is enqueued to generate the report as a PDF/CSV and email it to them
• admin adds a new user: celery task is enqueued to send an invite email out to the user, as well as some onboarding emails
• user requests to modify a large amount of items: multiple tasks are enqueued to update the items in batches of x amount.

I’ve got 3 “servers” at home right now.

• Raspberry Pi 4B 8gb: “RPINode0”
  • hosts a gotosocial instance
• Raspbery Pi 4B 8gb: “RPINode1”
  • hosts a few internal websites / APIs for staging (controlled via the docker API)
  • hosts Home Assistant for me
• Unraid NAS: “Moonturtle”
  • NGINX Proxy Manager: for exposing stuff to the internet
  • Nextcloud: for file management and access. Most of my family uses this as opposed to Google Drive.
  • Umami: website analytics
  • Jellyfin: for watching movies and tv shows I’ve ripped
  • Uptime Kuma: uptime monitoring and reporting
  • DDNS updater: dynamic DNS updater so I can keep my DNS records up to date (don’t have a static IP)
  • Portainer: for managing docker instances on RPINode1
  • MySQL/PostgreSQL/Redis: provides database services to all the stuff listed above
  • Flower: for monitoring Celery queues used by a few of my applications.
  • WireGuard: VPN for remote management of the server and access to the services I don’t have exposed outside my network

If federation works the same on here as it does on Mastodon, then yes. When you defederate a server you can’t see their users, communities, posts, comments, etc and they can’t see yours 🙂