First a little background of this this event:
Any intern in the Silicon Valley is invited. Just form a small group, come to LinkedIn Mountain View headquarters, and pull an all-nighter hacking up some awesomeness. From all the projects, we would pick top three in the likes of American Idol.
Interestingly, Node.js was a popular technology stack being used.
The momentum behind this technology is getting stronger and stronger. I see this trend continuing from the following aspects:
Cloud computing is here, where the cost of running a service on the cloud is measured by usage. Therefore squeezing every ounce to power from your machine instance is highly desirable. The philosophy of Node.js for asynchronous event handling makes a lot of sense in this environment. Because every bit of CPU starvation is costly, now measurable by $.
The tech trend is often set by the younger generation. The projects in this intern hackday collectively is a good sample of what the next generation of wiz's and geeks are going to work on. Node.js set a tone.
I spent sometime learning about Node.js and find although it is still very young, but its potential impact is going to be significant. I see someday it become a serious competition for Ruby/Rails and/or Python/Django.
I see server-side Java being pushed more towards the backend and eventually finding room in custom backends like NOSQL/Search systems.