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JRuby on Rails


         Wiktor Gworek
  http://blog.mocna-kawa.com


                               1
O mnie:

• Entuzjasta nowych technologii,
• student V roku na MIMUWie,
• od dwóch lat związany z Javą,
• prowadzę blog Mocna Kawa
 ‣ http://blog.mocna-kawa.com


                                   2
JRuby




        3
JRuby


Ruby (1.8)




               3
JRuby


Ruby (1.8)




               3
JRuby


   Ruby (1.8)


Pomaga:




                  3
JRuby


    Ruby (1.8)


Pomaga:
• rozszerzyć zasięg Ruby’iego,


                                 3
JRuby


    Ruby (1.8)


Pomaga:
• rozszerzyć zasięg Ruby’iego,
• reszty świata zrozumieć Ruby’iego.

                                       3
twórca Railsów
                 4
JRuby to nie:




                5
JRuby to nie:

• stworzenie innej dystrybucji Ruby’iego,




                                            5
JRuby to nie:

• stworzenie innej dystrybucji Ruby’iego,
• ani próba zmienienia go,



                                            5
JRuby to nie:

• stworzenie innej dystrybucji Ruby’iego,
• ani próba zmienienia go,
• przyznanie się, że Java sucks,


                                            5
JRuby to nie:

• stworzenie innej dystrybucji Ruby’iego,
• ani próba zmienienia go,
• przyznanie się, że Java sucks,
• odpowiedź na każdy problem z Ruby’im.

                                            5
6
Po co JRuby?




               7
Po co JRuby?
• Java jest wszechobecna,




                            7
Po co JRuby?
• Java jest wszechobecna,
• ogrom bibliotek Javowych,




                              7
Po co JRuby?
• Java jest wszechobecna,
• ogrom bibliotek Javowych,
• wydajność,



                              7
Po co JRuby?
• Java jest wszechobecna,
• ogrom bibliotek Javowych,
• wydajność,
• Javowi web developerzy są nieszczęśliwi,


                                             7
Po co JRuby?
• Java jest wszechobecna,
• ogrom bibliotek Javowych,
• wydajność,
• Javowi web developerzy są nieszczęśliwi,
• Railsowi web developerzy są szczęśliwi.

                                             7
Ruby i JRuby: bracia




                       8
Co będziemy robić?


            JMS




                     9
Co będziemy robić?

    tid: 112233
    tel: 606-RUBY-JAVA
    Hello World!

                         JMS




                               9
Co będziemy robić?

    tid: 112233
    tel: 606-RUBY-JAVA
    Hello World!

                         JMS
     tid: 112233
     (OK|FAILED)




                               9
Nie mów! Patrz!
Jak zobaczysz to uwierzysz.


                              10
Ale jednak parę rzeczy
      jest innych...


                         11
Różnica #01: Brak rozszerzeń
        natywnych*

      * dopóki nie pojawią się ich odpowiedniki




                                                  12
Różnica #02: Wsparcie dla
       baz danych




                            13
Różnica #03: szybkość linii
         poleceń




                              14
Nie, Java nie jest wolna...
     ...poza startem


                              15
Wdrażanie aplikacji
 Ruby on Rails


                      16
Mongrel JCluster

• Odpowiednik Mongrel Cluster,
• odpala N procesów w jednej maszynie
  wirutalnej,

• sprawdzony przez społeczność Railsową.


                                           17
Grizzly/Glassfish v3

• Lekki, dostępny jako gem,
• współbieżność, pule połączeń,
 • wykorzystanie NIO,
• pełne wsparcie dla Ruby on Rails.

                                      18
Przyszłość



             19
Kompilator JRuby już dostępny
Z   ostatniej   chwili

                                20
JMX & ActiveHibernate



                        21
...i jest jeszcze jedna rzecz



                                22
Wykorzystanie EJB




                    23
?
wiktor.gworek@gmail.com
  http://blog.mocna-kawa.com

                               24

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JRuby On Rails