JRuby Meets JBang: A Hacky but Powerful Combination

During the Christmas holidays, the author experimented with combining JRuby and JBang to leverage the performance of the JVM and the productivity of Ruby. While JBang doesn't officially support JRuby, a clever workaround using JBang's dependency management and Java's ProcessBuilder was employed. The result? A functional JRuby application incorporating Javalin, JDBI, SLF4J, and ruby-jwt, achieving CRUD operations on a SQLite database with JWT authentication. This hack demonstrates the potential of combining JRuby with Java ecosystem libraries, with performance validated via Apache Benchmark.