Ruby startup demo – Dan Farina

on YouTube ↗11m

" summary

Ubicloud is an open-source alternative to AWS that deploys Mastodon (Rails + Node) onto bare-metal providers like Hetzner or AWS Bare Metal, using a managed Postgres and one-VM-per-load-balancer DNS+nftables layer‑4 model. Networking pairs subnets with uniform firewalls and encrypts private subnets; TLS is solved with DNS01 ACME via a metadata endpoint, letting instances terminate certs. Codebase is Ruby, about 85,000 physical source lines with 100% branch coverage in tests. Demo deploys and runs live (Germany) and supports websockets.

AI-written summary · about

" chapters (8)

1. 0:00Ubloud demo setup
2. 1:50Ubloud console & infra
3. 2:34Ruby design & Rails
4. 4:21Networking & firewalls
5. 6:06Live Mastodon deployment
6. 7:35Load balancing & TLS
7. 8:59WebSocket demo
8. 10:01Summary & call to action

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