We Made It!
It looks like we were spot-on with our estimate of ten times the normal traffic today. Our preparations held and Twitter stayed up. Only one unexpected disruption occurred and that was a network problem in our data center which caused a few minutes of service disruption some time after Steve Jobs' keynote. With that single disruption, our uptime during the event was 97.3%
Initially, we turned off some features to shed load as we announced yesterday but we were able to turn them back on during the keynote as Twitter handled the dramatic amount of traffic. About 4% of requests during this time did return the page that asks folks to wait a few minutes and try again. However, we learned a lot during this stress test and that will translate to better performance down the line.
Initially, we turned off some features to shed load as we announced yesterday but we were able to turn them back on during the keynote as Twitter handled the dramatic amount of traffic. About 4% of requests during this time did return the page that asks folks to wait a few minutes and try again. However, we learned a lot during this stress test and that will translate to better performance down the line.

22 Comments:
I was very much impressed with the way twitter handled the keynote. Only at the end the service was disrupted, but a few minutes was totally acceptable.
Great job, guys!
Keep up the good work
Congrats! You did a great job, hope the users recognize your effort (i know i do).
Well done guys - you did it. Now just charge us to keep Twitter ad free and super reliable at all times. I asked and 50% of Tweeters would pay $24/£12 a year to do so - see the poll here
I noticed it was a bit slower than normal, but hey that could just have been my POS DSL connection from AT&T.
-Adam
Congrats guys
Keep up the good work, seriously impressive today.
Great job guys! But it was not only the Steve Jobs speech wich caused the traffic, it also our European Soccer competition backchannel for our Dutch team! Check the orange avatars :) /isheila, /rotjong, /yizmo, /raidho, /Greenish, /Rhymo, /silvertje and many more... Keep up the good work! xx @leolovestwtr
I love you man
I'm wondering how much of that traffic is taken my TechCrunch announcing he is live streaming and ready for chat !!!!
Great job!! I'm glad you guys are learning how to handle such problems. It will definitely help other people in the future as well.
Yeah, congrats. Nice to see you're making progress.
Twitter rokth. You managed to keep your core services running in the face of a gigantic onslaught of traffic. Well done. Now maybe TechCrunch will get off your case for a while.
Good job guys! Keep it up!
Excellent stuff guys. Really good effort.
Served up a big dish of SUCK-IT to the twitter haters.
Kudos!!!
Way to show the Twitter community that you are fixing what needs to be fixed and have the right folks for the job! :)
Awesome job, Biz + Twitter team! I thought for sure the WWDC mascot would have been the failwhale, but you guys definitely delivered. Congrats!
Of course, now you're on the hook for keeping uptime. "If you can survive WWDC, you should be able to survive anything!"
That's nice. Great!
Hey guys. Great work. That was really impressive. I'm glad to see you guys made it through and learned a little along the way. A stress test like that can only mean better things for the future of Twitter. Has TechCrunch eaten its words yet?
Amazing by all means !! Keep setting new records guys. D inspiring thing to observe is that u folks took Steve's yday keynote even as a learning & r all set to improvise...Keep Rocking...!
~Chinmayz
it might've not completely crashed, but there were more than a couple times when I and my friends were unable to access the site...
I love you guys and hope for the best! I was able to follow bothe your site and UStreamTv during the keynote for news!!
You're kidding right? 97.3% isn't something anyone should be proud of. And letting the production systems become your test bed for stress testing? Are you serious? Turning off features only masks the underlying problems.
Still lots of work to do....
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