Introduction to JRuby

Transcript

1. “Intro”  to  JRuby   Jay  McGaffigan  

2. Me,  Myself,  and  I   •  Developer  at  Decision  Resources

    Group   •  Twi@er:  @hooligan495  

3. It’s  ruby   •  Installs  with  RVM   •  Download

    a  distribuIon   •  Even  on  Windows  

4. Rails   •  Yep…  

5. Some  things  are  different  

6. Not  a  Unified  Gemset   •  ImageMagick  vs  Rmagick  

   •  Cextensions  aren’t  fully  supported  (never  will   be  considered  ProducIon)   •  Might  have  to  write  a  java  extension  

7. Deploying   •  It’s  different  but  not  “new”  

8. Java  integraIon   •  Calling  Java  Libraries     • 

   Give  Java  a  Ruby  syntax  

9. Things  to  be  aware  of   •  Startup   • 

   JVM  tuning  and  warmup   •  Forking  processes   •  Threading  

10. Why  Did  we  Choose  JRuby   •  Ruby  in  the

     “enterprise”   •  Selling  a  product   •  Fit  into  customers  “labs”  

11. Resources   •  h@p://www.jruby.org   – Ge_ng  started   – Wiki  

    – IRC   Tom  Enebo,  Charles  Nu@er,  Nick  Sieger,  and  others   whose  names  I  forget  are  always  up  for  answering  a   quesIon  

12. Always  looking  for  help   •  Grab  a  bug  and

     work  to  fix  it   •  Grab  a  gem  (rcov)  and  ensure  Jruby   compaIbility