If only Bitbucket could give such comprehensive reports. A few months back outages seemed almost daily. Things are more stable now. I hope for the long term.
Isn't BB's problem basically that there are too many users? GH's outage writeup is cool, because it's a one off and it can be analysed. When BB is just overloaded for a long time and needs more power, it's not going to be very interesting.
(unless I missed some specific non capacity related outages?)
Maybe. BitBucket was also an acquisition so for some time I believe there was a lack of resource provided to them and there was a huge technical debt/integration effort required. At this very time, I don't know if Atlassian actually care much about BitBucket. They are probably more concerned about delivering Stash than BitBucket, my wild guess.
I was an active BB user a couple years ago, and the project I worked on would hg clone from BB many times a day so I would be the first one to notice a 503 or whatever error coming from their service. Typically I would see one or two outage per month, some last a few minutes, some last several hours. Most of the time the outage impacted git/hg checkout, so I think that was their technical bottleneck.
We use Stash and it is surprisingly not bad at all. Github is much more polished but for code browsing and review, it does that which it is supposed to do.
(unless I missed some specific non capacity related outages?)