Wow. According to the current metric (87.25% uptime), github suffers a partial outage 3h/day.
If you filter for major/critical outages, their uptime of core services in trailing 12 months all have two 9's.
https://isgithubcooked.com/?severities=major.critical
Also, a huge part of their cumulatively-bad availability story is copilot, which is a functionality (LLM inference) that most organizations have struggled to get two 9's of availability in for the last 9 months.
Given GitHub has become a utility service globally this should be frankly worrisome to everyone let alone the developer community actively using it. It’s intertwined into many things now beyond simply source code hosting and PRs. And I am surprised GitHub leadership is ok with the state of things. Having worked at a lot of 5-6 9’s shops, this would have been all hands on deck, all roadmaps paused, figure it out or perish sorts of stuff.
I think at least three 9's would be the baseline. But I'm also sympathetic that they had a *post-exit* scaling of write volume of like, idk, 1000x???
Very few orgs would survive that kind of scale and retain three 9's.
The things aren't profile pictures not loading in saudi, they're botching merge jobs, git/api operations being down, pull requests not loading, etc. And that's on top of the plethora of UI bugs that have been pervasive for years that aren't blocking functionality.
And it should not depend on their status page which seems to take a while to catch up when there's an actual outage.
You can pick whichever services you feel fall into this category in the top.
For the bundle I chose, there have only been 3 totally clean weeks so far in 2026 :/
Why is the graph more dense on the right side?