It has been pretty rough. Their own numbers report just a single `9` for Actions in Feb 2026 with 98% uptime. But that said -- I don't get the 90% number.
Anecdotally, it seems believable that 1 in 50 times (2%) in Feb that Actions barfed. Which is not very nice, but it wasn't at 1 in 10 times (10%).
It looks like the aggregate stats are more of a venn diagram than an average. So if 1/N services are down, the aggregate is considered down. I don't think this is an accurate way to calculate this. It should be weighted or in some way show partial outages. This belief is derived from the Google SRE book, in particular chapters 3 (embracing risk) and 4 (service level objectives)
An aggregate number like that doesn’t seem to be a reasonable measure. Should OpenAI models being unavailable in CoPilot because OpenAI has an outage be considered GitHub “downtime”?
From the point of view of an individual developer, it may be "fraction of tasks affected by downtime" - which would lie between the average and the aggregate, as many tasks use multiple (but not all) features.
But if you take the point of view of a customer, it might not matter as much 'which' part is broken. To use a bad analogy, if my car is in the shop 10% of the time, it's not much comfort if each individual component is only broken 0.1% of the time.
These are two pages telling two different things, albeit with the same stats. The information is presented by OP in a way to show the results of the Microsoft acquisition.
It’s biaised to show this without the dates at which features were introduced. A lot of the downtimes in the breakdown are GitHub Actions, which launched in August 2019; so yeah what a surprise there was no Actions downtime before because Actions didn’t exist.
This is the real questionable part of the graphic. It seems that no-data pre 2018 was just considered 100% uptime (which is hardly historically accurate).
You'd think they'd do all the testing elsewhere and use a much shorter window of time to implement Azure after testing. I don't think this fully explains over 6 years of poor uptime.
I got Claude to make me the exact same graph a few weeks ago! I had hypothesized that we'd see a sharp drop off, instead what I found (as this project also shows) is a rather messy average trend of outages that has been going on for some time.
The graph being all nice before the Microsoft acquisition is a fun narrative, until you realize that some products (like actions, announced on October 16th, 2018) didn't exist and therefore had no outages. Easy to correct for by setting up start dates, but not done here. For the rest that did exist (API requests, Git ops, pages, etc) I figured they could just as easily be explained with GitHub improving their observability.
It feels like they launched actions and it quickly turned out to be an operations and availability nightmare. Since then, they've been firefighting and now the problems have spread to previously stable things like issues and PRs
They rushed to launch Actions because GitLab launched them before.
BTW, GitLab called it "CI/CD" just as a navigation section on their dashboard, and that name spread outside as well, despite being weird. Weird names are easier to remember and associate with specific meaning, instead of generic characterless "Actions".
Github actions needs to go away. Git, in the linux mantra, is a tool written to do one job very well. Productizing it, bolting shit onto the sides of it, and making it more than it should be was/is a giant mistake.
The whole "just because we could doesn't mean we should" quote applies here.
The same philosophy would suggest that running some other command immediately following a particular (successful) git command is fine; it is composing relatively simple programs into a greater system. Other than the common security pitfalls of the former, said philosophy has no issue with using (for example) Jenkins instead of Actions.
I think the unicorn is only for web pages. Things like git api services might be broken independently (and often are!) and they might show up on the status page after some time.
I feel like by now GitHub has a worse downtime record than my self hosted services on my single server where I frequently experiment, stop services or reboot.
It's ok because we're still paying for it. QoS degradation is worth it. No need to have 99.999% then you can have 90.84% and still people to pay for it.
I'm not a GitHub apologist, but that graph isn't at scale, at all. It's massively zoomed in, with a lower band of 99.5%. It makes it look far worse than it is.
If you plotted it from zero, then a horrible service and a great service would be indistinguishable. Their SLA for enterprise customers is 99.9%. The low end of that chart is 5x that amount downtime. It is a reasonable scale for the range people are concerned about and it looks bad because it is bad.
> If you started the y-axis at zero, you wouldn't see much of anything.
That's... kind of my point.
As a reliability engineer, I'm disappointed in GitHub's 99.5% availability periods, especially as they impact paying customers. On the other hand, most users are non-paying users, and a 99.5% availability for a free service seems to me to be a reasonable tradeoff relative to the potential cost of improving reliability for them.
I don't think so. Even before Microsoft acquired GitHub, you could have as many private repos as you wanted, but you couldn't have more than 3 collaborators. This change happened back in 2019:
Nearly every time Github has an outage, Azure is having issues also.
Actually the last 4-5 outages from Github, Our Azure environments have issues (that they rarely post on the status page) and lo and behold I'll notice that Github is also having the same problem.
I can only assume most of this is from the Azure migration path. Such an abysmal platform to be on. I loathe it.
Looks like there's an internal service health bulletin:
Impact Statement: Starting at 19:53 UTC on 31 Mar 2026, some customers using the Key Vault service in the East US region may experience issues accessing Key Vaults. This may directly impact performing operations on the control plane or data plane for Key Vault or for supported scenarios where Key Vault is integrated with other Azure services.
Honestly all of the key vault functions are offline for us in that region. Just another day in paradise.
Also the fact that the azure status page remains green is normal. Just assume it's statically green unless enough people notice.
I'd like to move off GitHub, and I deploy some websites using GitHub Pages, so I took a look at the availability of static web hosting; GH actually does really well on this metric, although Fastly, the CDN they use, should get the credit.
I'm convinced one of my org's repos is just haunted now. It doesn't matter what the status page says. I'll get a unicorn about twice a day. Once you have 8000 commits, 15k issues, and two competing project boards, things seem to get pretty bad. Fresh repos run crazy fast by comparison.
My impression is that, before Microsoft acquired GitHub, GitHub went for many years without really introducing new features, so part of its stability came from the fact that it wasn’t very ambitious or proactive about improving.
I will chime in that Jira and Bitbucket have drastically improved performance and reliability over this same time period. It actually feels snappy and they seem to listen to feedback.
When I say that Microsoft writes very bad code some people get offended. For example for Azure Event Hubs they have almost no documentation and Java libraries that mostly do not run.
It is ridiculous how company owned by Microsoft, making non sense money on Azure, is let to die like this. That's have to be a soft of plan or something. So sad to watch it.
GitHub is 100x the size today with 100x the product surface area. Pre-Microsoft GitHub was just a git host. Now, whether GitHub should have become what it is today is a fair question but to say “GitHub” is less stable today vs. 10 years ago ignores the significant changes. Also, much of these incidents are limited to products that are unreliable by nature, e.g: CoPilot depends on OpenAI and OpenAI has outages. The entire LLM API industry expects some requests to fail.
GitHub’s reliability could stand to be improved but without narrowing down to products these sort of comparisons are meaningless.
And even just that aspect of the service is now extremely unreliable. If outages in the LLM side can cause that to break, that would indicate some serious architectural problems.
Honestly I think their status page just got more honest -- and they are graphing this in such a way that any partial outage to any service looks really bad on teh chart.
There were definitely partial outages to services inside that row of horizontal green dots, that the status page just wasn't advertising.
I mean I'm as annoyed as the next person about the outages but I'm not sure correlating with the Microsoft acquisition tells the whole story? GitHub usage has been growing massively I'd imagine?
Nearly all the variance is from Actions, a product that didn’t exist beforehand.
It’s despicable to see everyone punching down on GitHub. Even under Microsoft they’ve continued to provide an invaluable and free service to open source developers .
And now , while vibe coders smother them to death, we ridicule them . Shameful , really
I was with you until your comment about vibe coders. Microsoft paid for and brought this vibe coding hell upon themselves. GitHub Copilot, investment in/partnership with OpenAI, and everything else they’ve done to enshitify software and the internet.
If it brings them down, they’ve only themselves to blame. More likely it’ll just hasten the end of free public repos, which will be a shame, but we’ll find other ways to share code that aren’t reliant on one semi-benevolent megacorp.
Is the pre-2018 data actually accurate? There seem to have been a number of outages before then: https://hn.algolia.com/?dateEnd=1545696000&dateRange=custom&...
Maybe that's just the date when they started tracking uptime using this sytem?
Data comes from the official status page. It may be more a marketing/communication page than an observability page (especially before selling)
The status page was often down when GH was down, back in the days.
4 replies →
i assume they simply fixed the status page in 2018.. lol.
Even better IMO is this status page: https://mrshu.github.io/github-statuses/
"The Missing GitHub Status Page" with overall aggregate percentages. Currently at 90.84% over the last 90 days. It was at 90.00% a couple days ago.
It has been pretty rough. Their own numbers report just a single `9` for Actions in Feb 2026 with 98% uptime. But that said -- I don't get the 90% number.
Anecdotally, it seems believable that 1 in 50 times (2%) in Feb that Actions barfed. Which is not very nice, but it wasn't at 1 in 10 times (10%).
It looks like the aggregate stats are more of a venn diagram than an average. So if 1/N services are down, the aggregate is considered down. I don't think this is an accurate way to calculate this. It should be weighted or in some way show partial outages. This belief is derived from the Google SRE book, in particular chapters 3 (embracing risk) and 4 (service level objectives)
https://sre.google/sre-book/embracing-risk/
https://sre.google/sre-book/service-level-objectives/
11 replies →
An aggregate number like that doesn’t seem to be a reasonable measure. Should OpenAI models being unavailable in CoPilot because OpenAI has an outage be considered GitHub “downtime”?
As long as they brand it as a part of GitHub by calling it "GitHub Copilot" and integrate it into the GitHub UI, I think it's fair game.
6 replies →
I think reasonable people can disagree on this.
From the point of view of an individual developer, it may be "fraction of tasks affected by downtime" - which would lie between the average and the aggregate, as many tasks use multiple (but not all) features.
But if you take the point of view of a customer, it might not matter as much 'which' part is broken. To use a bad analogy, if my car is in the shop 10% of the time, it's not much comfort if each individual component is only broken 0.1% of the time.
7 replies →
These are two pages telling two different things, albeit with the same stats. The information is presented by OP in a way to show the results of the Microsoft acquisition.
holy shit that's nearly five weeks of down time.
Well, I mean, I guess that's fair really. How long has github been around? Surely it's got five weeks of paid time off by now...
It’s biaised to show this without the dates at which features were introduced. A lot of the downtimes in the breakdown are GitHub Actions, which launched in August 2019; so yeah what a surprise there was no Actions downtime before because Actions didn’t exist.
You can click on "Breakdown" and then on "Actions" to hide it.
Even worse, those features show "100% uptime" pre-existence on the breakdowns page too.
This is the real questionable part of the graphic. It seems that no-data pre 2018 was just considered 100% uptime (which is hardly historically accurate).
Check the breakdown page. Like yes the magnitude is reduced obviously for individual services. But they all show the same trend.
I checked the breakdown page, as I wrote:
> A lot of the downtimes in the breakdown are GitHub Actions
FWIW if people are looking for a reason why, here's why I think it's happening: https://thenewstack.io/github-will-prioritize-migrating-to-a...
It's absolutely this. Our Azure outages correlate heavily with Github outages. It's almost a meme for us at this point.
Azure's downtime doesn't appear to be as bad as Github's.
1 reply →
You'd think they'd do all the testing elsewhere and use a much shorter window of time to implement Azure after testing. I don't think this fully explains over 6 years of poor uptime.
The fact that even they struggle with github actions is a real testimate to the fact that nobody wants to host their own CD workers.
1 reply →
It certainly explains the issues _now_, IMO.
I got Claude to make me the exact same graph a few weeks ago! I had hypothesized that we'd see a sharp drop off, instead what I found (as this project also shows) is a rather messy average trend of outages that has been going on for some time.
The graph being all nice before the Microsoft acquisition is a fun narrative, until you realize that some products (like actions, announced on October 16th, 2018) didn't exist and therefore had no outages. Easy to correct for by setting up start dates, but not done here. For the rest that did exist (API requests, Git ops, pages, etc) I figured they could just as easily be explained with GitHub improving their observability.
It feels like they launched actions and it quickly turned out to be an operations and availability nightmare. Since then, they've been firefighting and now the problems have spread to previously stable things like issues and PRs
They rushed to launch Actions because GitLab launched them before.
BTW, GitLab called it "CI/CD" just as a navigation section on their dashboard, and that name spread outside as well, despite being weird. Weird names are easier to remember and associate with specific meaning, instead of generic characterless "Actions".
We added Actions for CI in 2020. A year later realized our entire deploy pipeline just assumed it would be up.
Webhook doesn't fire, nothing errors out, and you find out when someone asks why staging hasn't moved in two days.
1 reply →
Github actions needs to go away. Git, in the linux mantra, is a tool written to do one job very well. Productizing it, bolting shit onto the sides of it, and making it more than it should be was/is a giant mistake.
The whole "just because we could doesn't mean we should" quote applies here.
The same philosophy would suggest that running some other command immediately following a particular (successful) git command is fine; it is composing relatively simple programs into a greater system. Other than the common security pitfalls of the former, said philosophy has no issue with using (for example) Jenkins instead of Actions.
2 replies →
But GitHub actions is not Git?
1 reply →
PR merging broken right now https://www.githubstatus.com/incidents/ml7wplmxbt5l
I remember a lot of unicorn pages back in the days. Maybe the status page was just not updated that regularly back then?
I think the unicorn is only for web pages. Things like git api services might be broken independently (and often are!) and they might show up on the status page after some time.
Historical *
https://www.merriam-webster.com/grammar/everything-youve-eve...
One could argue that, given how singularly awful it is, GitHub's historical uptime might qualify as "historic".
Bless you, was very much not what I was expecting from the title.
I feel like by now GitHub has a worse downtime record than my self hosted services on my single server where I frequently experiment, stop services or reboot.
It's ok because we're still paying for it. QoS degradation is worth it. No need to have 99.999% then you can have 90.84% and still people to pay for it.
Those electricity savings can better used to fuel the token bonfire
It does have a worse downtime record than my tiny VPS that has a recurrent packet routing problem and keeps going offline. Measurably so.
[flagged]
Github's migration to Azure has so far been a hilariously bad advertisement for Azure
I'm not a GitHub apologist, but that graph isn't at scale, at all. It's massively zoomed in, with a lower band of 99.5%. It makes it look far worse than it is.
If you plotted it from zero, then a horrible service and a great service would be indistinguishable. Their SLA for enterprise customers is 99.9%. The low end of that chart is 5x that amount downtime. It is a reasonable scale for the range people are concerned about and it looks bad because it is bad.
It's an uptime chart and shouldn't need to show much more than the 99% range.
If you started the y-axis at zero, you wouldn't see much of anything. Logarithmic scale would still be a bit much imo.
> If you started the y-axis at zero, you wouldn't see much of anything.
That's... kind of my point.
As a reliability engineer, I'm disappointed in GitHub's 99.5% availability periods, especially as they impact paying customers. On the other hand, most users are non-paying users, and a 99.5% availability for a free service seems to me to be a reasonable tradeoff relative to the potential cost of improving reliability for them.
2 replies →
It also has 0 reflection of load. Weren't you limited to a single private repo before Microsoft took over?
I don't think so. Even before Microsoft acquired GitHub, you could have as many private repos as you wanted, but you couldn't have more than 3 collaborators. This change happened back in 2019:
https://github.blog/news-insights/product-news/new-year-new-...
Unsolicited feedback ... changing the y-axis to be hours (not % uptime) might be more intuitive for folks to understand.
The data is there, you just have to hover over each data point.
It could even be both % and offline hours per year. To me the percentage is simpler to understand.
Nearly every time Github has an outage, Azure is having issues also.
Actually the last 4-5 outages from Github, Our Azure environments have issues (that they rarely post on the status page) and lo and behold I'll notice that Github is also having the same problem.
I can only assume most of this is from the Azure migration path. Such an abysmal platform to be on. I loathe it.
Looks like there's an internal service health bulletin:
Impact Statement: Starting at 19:53 UTC on 31 Mar 2026, some customers using the Key Vault service in the East US region may experience issues accessing Key Vaults. This may directly impact performing operations on the control plane or data plane for Key Vault or for supported scenarios where Key Vault is integrated with other Azure services.
Honestly all of the key vault functions are offline for us in that region. Just another day in paradise.
Also the fact that the azure status page remains green is normal. Just assume it's statically green unless enough people notice.
I'd like to move off GitHub, and I deploy some websites using GitHub Pages, so I took a look at the availability of static web hosting; GH actually does really well on this metric, although Fastly, the CDN they use, should get the credit.
https://alexsci.com/blog/static-hosting-uptime/
The biggest spikes are Github Actions, starting November 2019. They didn't go GA until November 13, 2019: https://siliconangle.com/2019/11/13/github-universe-announce...
I'm convinced one of my org's repos is just haunted now. It doesn't matter what the status page says. I'll get a unicorn about twice a day. Once you have 8000 commits, 15k issues, and two competing project boards, things seem to get pretty bad. Fresh repos run crazy fast by comparison.
It could also be that they have more customers / clients now, or offer more capabilities.
My impression is that, before Microsoft acquired GitHub, GitHub went for many years without really introducing new features, so part of its stability came from the fact that it wasn’t very ambitious or proactive about improving.
I loved that time. Websites, or "apps" that don't change every second time I want to use them, are great.
Do we have metrics for the uptime of other major services? Would be interesting to see if this is just a GitHub problem or industry-wide.
Bitbucket Cloud incident history: https://bitbucket.status.atlassian.com/history
Though I will be the first to say I don't fully trust it based on the flakey git clone errors we see in CI.
It’s actually great to see a living example of how sensitive users* are to what to a lay person would look like a small amount of downtime.
The fact that we’re all talking about it, and not at all surprised, is a great example we can take when making the case for more 9’s of reliability.
* well, very technical power users.
I will chime in that Jira and Bitbucket have drastically improved performance and reliability over this same time period. It actually feels snappy and they seem to listen to feedback.
When I say that Microsoft writes very bad code some people get offended. For example for Azure Event Hubs they have almost no documentation and Java libraries that mostly do not run.
How much of the downtime is due to all the AI code being committed?
It is ridiculous how company owned by Microsoft, making non sense money on Azure, is let to die like this. That's have to be a soft of plan or something. So sad to watch it.
GitHub is 100x the size today with 100x the product surface area. Pre-Microsoft GitHub was just a git host. Now, whether GitHub should have become what it is today is a fair question but to say “GitHub” is less stable today vs. 10 years ago ignores the significant changes. Also, much of these incidents are limited to products that are unreliable by nature, e.g: CoPilot depends on OpenAI and OpenAI has outages. The entire LLM API industry expects some requests to fail.
GitHub’s reliability could stand to be improved but without narrowing down to products these sort of comparisons are meaningless.
> Pre-Microsoft GitHub was just a git host.
And even just that aspect of the service is now extremely unreliable. If outages in the LLM side can cause that to break, that would indicate some serious architectural problems.
The article provides a way to do just that - click breakdown then you can deselect any product areas.
Just the Git operations show way more instability post acquisition.
Sites are supposed to get more reliable as they grow and have more resources to allocate specifically towards site reliability.
This at least makes me feel like I am not going crazy when I say "Github used to be much more reliable before Microsoft bought them"
Reminder to keep local backups of everything important while the reliability of all these services continues to degrade.
The significance of the changeover would be much more impactful if the chart showed a longer history.
I guess "centralizing everything" to GitHub was never a good idea and called it 6 years ago. [0]
Looking at this now, you might as well self host and you would still get better uptime than GitHub.
[0] https://news.ycombinator.com/item?id=22867803
This has to feel a little vindicating.
Based on the graphics, Microsoft doesn't seem to be doing very well
Historical, not historic. Extremely not historic.
I think you mean GitHub’s histrionic uptime.
I wonder if they got moved to Azure in 2019?
Honestly I think their status page just got more honest -- and they are graphing this in such a way that any partial outage to any service looks really bad on teh chart.
There were definitely partial outages to services inside that row of horizontal green dots, that the status page just wasn't advertising.
That's pretty stark.
Powered by Azure™
I mean I'm as annoyed as the next person about the outages but I'm not sure correlating with the Microsoft acquisition tells the whole story? GitHub usage has been growing massively I'd imagine?
Programming is a solved problem, btw.
hot take: I would accept ads under every PR comment in GitHub if we could get back to 3 or 4 nines of reliability.
[dead]
[flagged]
Nearly all the variance is from Actions, a product that didn’t exist beforehand.
It’s despicable to see everyone punching down on GitHub. Even under Microsoft they’ve continued to provide an invaluable and free service to open source developers .
And now , while vibe coders smother them to death, we ridicule them . Shameful , really
I was with you until your comment about vibe coders. Microsoft paid for and brought this vibe coding hell upon themselves. GitHub Copilot, investment in/partnership with OpenAI, and everything else they’ve done to enshitify software and the internet.
If it brings them down, they’ve only themselves to blame. More likely it’ll just hasten the end of free public repos, which will be a shame, but we’ll find other ways to share code that aren’t reliant on one semi-benevolent megacorp.
The smothering would happen with or without Copilot. This just sounds like an excuse to be ungrateful .
I hope GitHub shuts down free tier , maybe developers will finally be grateful .
3 replies →