Practical JRuby on Rails Book by Ola Bini
Practical JRuby on Rails Web 2.0 Projects: Bringing Ruby on Rails to Java is a new book by Ola Bini, a core member of the JRuby development team, and published by Apress. In its 330 pages it covers pretty much everything you need to know about deploying Rails applications on the JRuby platform and how to take advantage of the different technologies JRuby makes available to you (JDBC, JMX, Tomcat, Enterprise Java Beans, etc.) As well as covering the technologies and concepts involved, the book also walks the reader through developing and deploying a few different Rails applications from scratch. You can buy a PDF version of the book from Apress for $21.50 or the usual print version from Amazon.com for $28.37.
Note: An interview with Ola Bini is coming up in the next post here at Ruby Inside.