Deploy using the JVM's high performance while building your apps in the language you love. JRuby is a fast, scalable, and powerful JVM language with all the benefits of a traditional Ruby environment. See how to consolidate the many moving parts of an MRI-based Ruby deployment onto a single JVM process. You'll learn how to port a Rails application to JRuby, get it into production, and keep it running. JRuby deployments have fewer moving parts and consume less memory than traditional Ruby deployments, but to deploy your apps on the JVM, you need to learn some new approaches. This book introduces you to three JRuby deployment strategies that will give you the performance and scalability you need while letting you use the language you love.