I don't really have a lot to write on any particular keynotes. There were three that really stood out to me of the ones I attended. There were a few that I did not attend for networking and interest purposes.

The first one I want to mention is Jon Jenkins talking about some operational case studies. He had some really interesting information about scaling and how that can be handled in a cloud computing world. There were two important components to the talk. First, it's nice to scale down to your traffic. Since you're not dealing with real hardware anymore, you can have your computing capactiy track with your actual traffic/data/constraining operations. The second component was scaling up at useful times. The given example was doing a deployment by copying the fleet to a new set of virtual servers, deploying the new software there, and then flipping your load balancer over to the updated fleet. Then, you also have a nice rollback option of just flipping the load balancer back.

The second keynote I want to mention was about SSDs. It was short, profane, and funny. The end result: use SSDs in your computers and servers.

Finally, John Resig did a really good (I think) talk on holistic performance analysis of JavaScript. Unfortunately, I missed about the first 10-15 minutes of the talk. I will try to watch it later and report back.