Migrating to Clojure. So much fn.

Transcript

1. Migrating to Clojure So much fn @janstepien

2. I work at

3. I work at

4. None

5. © Seph Swain 2008 flickr.com/photos/seph_swain/2735367665

6. (something new)

7. © Seph Swain 2008 flickr.com/photos/seph_swain/2741483308

8. None

9. feature freeze! no

10. ↓ ╭────────────╮ │ http proxy │ ╰────────────╯ ↓ ↓ ╭───────────────╮

    ╭─────────────╮ │ ruby on rails │ ← │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ╭──────╮ │ db │ ╰──────╯

11. ↓ ╭────────────╮ │ http proxy │ ╰────────────╯ ↓ ↓ ╭───────────────╮

    ╭─────────────╮ │ ruby on rails │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯

12. ↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails

    │ ↓ │ │ ╭─────────────╮ │ │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯

13. /colour-red /50-100-euro /jeans/esprit

14. ↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails

    │ ↓ │ │ ╭─────────────╮ │ │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯

15. ↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails

    │ ↓ │ │ ╭─────────────╮ │ │ │ clojure │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯

16. (cons )

17. a slide intentionally left blank

18. widgets the cornerstone

19. {:fetch (fn [env] (get-data-for env)) :view (fn [fetched-data] (render fetched-data))}

20. (map render widgets) ↓ (pmap render widgets)

21. templating worst nightmare

22. © omefrans 2010 flickr.com/photos/omefrans/4238610113

23. <div id=”main”> text </div> {:tag :div :attr {:id ”main”} :content

    [”text”]}

24. repl everywhere

25. tools to the rescue

26. before 54 machines

27. after 10 machines* * traffic grew twofold

28. mistakes we made a lot

29. (my {:yet :another} (somewhat [:helpful]) (dsl!))

30. hiring not as bad as it seems

31. future a lot to be done

32. summing it up it was a good idea

33. Migrating to Clojure So much fn jan.stepien@stylefruits.de jan@stepien.cc @janstepien