Why do people use JRuby?

Why do people use JRuby?

Reasons for using JRuby: Java integration. Restricted environment (your machine has Java installed by not ruby and you don’t have root) Restricted environment (you have ruby installed but don’t have root so can’t install gems you need)

Who uses JRuby?

Who uses JRuby? 17 companies reportedly use JRuby in their tech stacks, including Soundcloud, Runtastic, and Groupon.com.

What is the difference between Ruby and JRuby?

JRuby is similar to the standard Ruby interpreter except written in Java. JRuby features some of the same concepts, including object-oriented programming, and dynamic typing as Ruby. The key difference is that JRuby is tightly integrated with Java, and can be called directly from Java programs.

Is JRuby faster than Ruby?

But in general, Ruby 1.9 is faster than JRuby, but Ruby 1.8 is slower than JRuby. e.g. according to the Computer Language Benchmarks Game: (a.k.a. MRI)], depending on how many cores you have.

Why is JRuby slow?

Why Is my JRuby Program Slow? The JVM might be fast at running Java in benchmark games, but that doesn’t necessarily carry over to JRuby. Notably, an untuned JVM process has a slow start-up time, and with JRuby, this can get even worse as lots of standard library code is loaded on start-up.

What is JRuby complete?

In summary, embedding jruby-complete gives you complete control of your Ruby runtime. The downside is that discovering and executing commands through jruby-complete can be a pain.

Can TruffleRuby run rails?

TruffleRuby can run Rails and is compatible with many gems, including C extensions. TruffleRuby might not be fast yet on Rails applications and large programs.

What is TruffleRuby?

TruffleRuby is a high-performance implementation of the Ruby programming language built on GraalVM using the Truffle language implementation framework and the GraalVM compiler. TruffleRuby is one part of GraalVM, a platform for high-performance polyglot programming.