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And that’s it. JSConf.EU 2011 is done. Great conf! Here is my summary about the second day’s talks.
The first talk of the day was by Tomasz Janczuk about High density server side java script. The microsoft speaker was talking about possibilities to lower hosting costs for lightweight applications (actual node apps). He assumed costs of 5€ per month as current normal hosting costs. Way too much, according to him. Tomasz splitted the currently process based hosting approach into threads. Doing so, each application won’t run in a single process but in process’ threads. Because the resulting price reduction was not enough, he was going on. An explaination followed, which outlined the hierarchy of V8 apps with it’s V8::Isolates and it’s V8::Contexts. Basically each application has an isolate and in that one specific context. However, Tomasz was splitting the Isolate into multiple contexts, running each an application. This was finally resulting in a demonstration of 1000 chat servers running all in a single thread’s V8::Isolate. If I remember correctly the final price was about 0,30€ a month.
Tomasz was using the tool Denser, which spawned the processes and started a web gui with some information about hardware usage and network traffic. You can find it here.
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Alright, …, day 1 of the JSConf.EU is done and while other are trying to minimize the results of the after show party I’ll try to summerize the (visited) talks:
Not a talk at all but a very nice detail was the artist Anna Lena Schiller. The Fräulein (see the website) created an artwork for each of the talks in the downstairs area.
The first talk was by Dean McNamee about the multimedia programming environment Plask. It might be my inability to completely understand native american speaker or the complexity of the topic, but I don’t exactly got the point :D As far as I’ve understood, Plask is an environment which can be used in order to easily analyze multimedia and trigger stuff according to the resulting data. Dean presented some showcases including a visualization of music (via a nicely animated wave stream) and an experiment by a car manifacturer, who filled the inner of the car with gas and placed some LEDs into it. The LEDs were then colored according to the bass of the music. Check out the website for the video.
One thing I’ve noticed, is, that Anna Lena had a type :D It’s “Plask” not “Plusk” ;)
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