Twitter's infrastructure has been under a lot of scrutiny in the wake of its capacity problems during World Cup Tweetstorms, where the service has struggled to keep pace with up to 3,000 messages per second. Seventy five percent of that traffic comes through third-party apps via the Twitter API rather than the Twitter.com web site, according to Twitter's John Adams, who provided an update on the company's operations Thursday at Velocity 2010. Here's a video of Adams' presentation, which runs about 22 minutes.
For more, see our coverage of Adam's presentation at Velocity 2009. For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.