It's Ruby...It's Java...No, it's JRuby

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This is the slide of the JRuby topic in Kungfu Rails 2009, Shanghai, China. …

This is the slide of the JRuby topic in Kungfu Rails 2009, Shanghai, China.
It's about how to deploy rails app to Java application servers.

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Transcript

  • 1. DigitalSonic Oct. 2009 It’s a Bird… It’s a Plane… No, it’s Superman
  • 2. How many Rails developers have Java knowledge?
  • 3.
    • The Best of JVM
    • It’s Just Ruby
    • Platform Independent
  • 4. Have a Try
    • Download the latest JRuby distribution
    • Unpack
    • Add the bin path to $PATH or %PATH%
    • Test it
      • jruby –v
      • jirb
      • jirb_swing
  • 5. Ruby => JRuby
    • ruby  jruby
    • C backend libraries  Java backend libraries
    • gem  jruby –S gem
    • rake  jruby –S rake
    • rails  jruby –S rails
  • 6. Ruby on Rails => JRuby on Rails adapter: mysql mongrel RMagick … adapter: jdbcmysql mongrel -jruby RMagick 4J …
  • 7. Both Rails and Java EE projects are running in the same Java AS?
  • 8. Warbler
    • Warbler is a gem that makes a .war file out of a Rails, Merb, or Rack-based application.
    http://kenai.com/projects/warbler
  • 9. Rails in Java AS
    • Tomcat
    • Jetty (jetty-rails)
    • Glassfish v2 / v3 (gem)
    • JBoss (JBoss-Rails)
  • 10. Rails in Java AS (cont.)
    • Larger JVM Memory Size
    • Server JVM
    • Latest JDK
    • Sun JDK / BEA JRockit ?
    • Connection Pool
    • Load-Balance
  • 11. Showcase: Blog
    • Getting Started with Rails
      • http://guides.rubyonrails.org/getting_started.html
    • Step by Step
      • jruby -S rails blog
      • Modify database settings
      • jruby -S warble config
      • Modify config/warble.rb
      • jruby -S warble war
      • Deploy into Tomcat
  • 12. Showcase: Blog (cont.)
  • 13. Showcase: Monitor
    • Tomcat Monitor Tools
      • PSI Probe (Lambda Probe)
      • Hyperic HQ
    • VM Monitor Tools
      • JConsole
      • VisualVM
      • JRockit Mission Control
  • 14. Showcase: Monitor (cont.)
  • 15. Showcase: Monitor (cont.)
  • 16. Showcase: Simple Tuning
    • VM
      • -Xmx768m -Xms768m -Xmn256m -XX:MaxPermSize=128m -XX:PermSize=128m
    • Tomcat Connector
      • maxThreads="1024" minSpareThreads="32" maxSpareThreads="128" enableLookups="false"
    • JNDI Connection Pool
    • For my laptop only, not for production environment
    • Some parameters are set without measurement
  • 17. Showcase: Simple Tuning (cont.) Ubuntu 8.10, kernel 2.6.27-14-generic JDK 1.6.0 Update 10 JRuby 1.3.1 Apache Tomcat 6.0.20 Mongrel 1.1.5 rails 2.2.2 activerecord-jdbc-adapter 0.9.2 jdbc-mysql 5.0.4 warbler 0.9.14
  • 18. Reference
    • http://jruby.org
    • http://rubyonrails.org/
    • http://kenai.com/projects/jruby/
    • Practical JRuby on Rails Web 2.0 Projects
    • JRuby Cookbook
  • 19. Q & A
  • 20.