Forecast: Clouds ahead
It looks like the theme of today is going to be clouds. I have spent the week on cloud computing, dreaming in the clouds and word … (yes, you guessed it!) clouds …
MathMagicians do their first jump into the cloud
I have been looking around after a good solution for setting up tests servers in a painfree way. I found a great one!
Its called slicehosting.
Basically, you rent a virtual server – it lives somewhere in the cloud, fighting for CPU time on a real machine with a bunch of ther servers. The IP adress is real enough – you are the root and totally in charge – and the financial commitments are kind of ridiculously low – you can pay 20 usd/month for the smallest slice – no strings attached.
I think this is a perfert setup for small it-companies that would like to deliver great software, and need the infrastructure of version control, continuous integration, and testservers. In this way, you don’t have to invest a lot of money, can always expand and upgrade your slices as you go on.
Incredible – but its working. I feel it like if the world just changed.
Beaaaaaaautifull Word Clouds
I was searching the internet for a flex component to generate nice looking wordclouds. I am working on a prototype version of a job search engine – and among other tricks – we will use word clouds to categorize job offers. I stumbled upon a site, that takes a text or URL as input – and generates the most beautiful wordclouds. They have designed a layout algorithm, that utilizes the space in a way, that is aesthetically very pleasing. Unfortunately, the wordle guys didn’t leak out the algorithm – I spent half of the night trying to compute a simple heuristic for doing similar things in Flex … I don’t think its actually needed by the project, but who can resist this beauty of words?
Wordle layouts the size of the word to be proportional to the frequency – I also spent some time wondering about other functions than linear for reflecting the frequency. I believe a normal distribution will also look quite nice.
All the computations reminded me of an old Calculus 101 problem:
Given a rectangle composed of other rectangles, each of which has at least one side of rational length, proove that the big rectangle also has at least one side of rational lengt.
My head in the clouds
I spent my previous weekend at what must be called the most cozy Java Conference in the world. Hanging out at the beautifull Hindsgavl Castle with the danish JUG (Javagruppen) at the annual conference was an amazing experience. We weren’t so many – mingled together and had lots of fun. I enjoyed Bruce Eckels “Hybridizing Java” talks – and was even lucky to get a copy of his book – with a sweet cartoon dedication. Neal Ford impressed me with his talk where he compared Ruby an Grails – so similar and so fiercely hostile to each other. My own talk was about both DCI and Scala – and I decided afterwards that just one of the themes would be enough for a talk. All to soon the conference was over, I was picked up by my family, and we enjoyed a stroll in the castle park.
While I was at the conference, I got confirmed an exciting opportunity – I have been hired by ITU to teach a course called Saas … the short hand Saas does not stand for Software as a service … but it could.
It is a part time position, which suits me perfectly! I can still commit myself to all kind of exciting stuff in my company, and once a week I will be doing my best to impress young, sensitive minds … Since I stopped teaching at SDU, I have been missing the academia life, and – I am looking so much forward to teach my new students everything important there is to know about system design and security … actually I have always wanted to be given the opportunity to put my fingerprint on a course, that will teach about good software design. What happens with the .java file between the editor and a webapplications with real users. What good quality is, why that gives us good security, and what goals we as programmers should strive to achieve. Of course inspired by my favourite computer science book – Pragmatic Programmer.
Anyway – I will be spending some time in the clouds, trying to design the perfect course plan.