Confoo: what I learned today (1)

I’m attending the Confoo conference this year. As with all those conferences, it’s a lot of information flowing, so this my self-assigned exercise to remember at the end of the day the nice things I learned. So what did I learn today?

I started with a non tech discussion about freelancing. I’ve never freelanced, but seems everybody else is doing it, so that 101 presentation was great. Some random thoughts out of it: hourly rate = yearly rate / 1900 * 1.25 to account for the overhead of insurance, retirement, … Have a strong relationship with the head hunter, avoid exclusivity. Corporations can pay off using dividends, salary or blend, and protects you. Capital sin for a staffing agency: sending your resume to a client without letting you know first. The presenter, Martin Handfield ( seemed a trustworthy guy, at least I can imagine he got quite a few extra resumes out of that session 🙂

Then, a bit of a refresher on Java EE 7. It’s been a while I have left the EJB shores, so it’s fun to hear back terms like container manager transactions, brought back old memories. I like the way it’s going, using annotations like TransactionScoped and dependency injection rather than monolithic bean structured. JAX-RS Client might actually be something we could use, in place of using HttpClient directly. Seems to have some potential to simplify client code communicating with REST end points in the same way Jersey simplified the exposition of REST end points.

The following session on CSS by Rachel Andrew was great: multi-column layout, flex box and grid models, CSS regions and exclusions (go here for more). I could not resist trying the multi column layout directly on our LTI Test app:

TwoColLayoutAfter lunch, a going back the basics of Linked Data and RDF. Now that I have been acquainted with JSON-LD and REST API design, going back to the core was a good refresher. I finally understood why SPARQL, the RDF query language, seems to be a standardized alternative to one-off API to expose data and allowing cross pollination of content that APIs silos make otherwise very difficult (open data movement).

And to wrap the day, a lively presentation on Responsive Design. Is it only about media queries? In a way the web was meant to be responsive from early on (liquid flow). So nothing new around the sun in this talk, but a few snippets of good sense: viewport approach being a coarse approach (basically wrapping x alternate designs based on x viewport sizes) to which we would prefer a more progressive adaptability (almost having each component be responsive on their own with softer transitions). And also that responsive design is not the only answer: sometimes a distinct mobile experience (most likely delivered using an App) might actually be a better answer as it can natively and fully leverage the device features (GPS/Camera/Offline/…). An app does not have to replicate the website features, but needs to offer a distinctly mobile experience.

That’s it for the day! Back at it tomorrow…

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