Hacker News is hosted at M5 and they are having a network outage:

http://status.m5hosting.com/pages/incident/5407b8e2b00244251...

edit: Unrelated to the Azure outage.

I'm surprised that a site as big as HN is only hosted in one place.

HN is probably very small. Curious as to the minimum size of the backend that will hold up the website.

There may need to be read replicas, but maybe not even that is needed.

Would love to see the HN architecture.

arclanguage.org hosts the current version of Arc Lisp, including an old version of the forum, but HN has made a lot of changes locally that they won't disclose for business reasons.

There's an open source fork at https://github.com/arclanguage/anarki, but it doesn't have any direct relationship with HN.