---
title: "This week's Ruby news, issue 204"
publication: "Ruby Weekly"
issue: 204
published_at: "2014-07-17"
canonical_url: "https://rubyweekly.com/issues/204"
---

This week's Ruby news, issue 204

A new Rails screencast site, a superfast JRuby, how Steve Klabnik builds a gem, and more.[Read this e-mail on the Web](http://rubyweekly.com/issues/204)

Ruby WeeklyIssue 204 — July 17, 2014

Steve Klabnik[How I Start Ruby: Building a Gem with Steve Klabnik](http://www.howistart.org/posts/ruby/1)A well-written, friendly walkthrough of building a Ruby gem from scratch (even suitable for non-Rubyists) by one of the best known members of the Ruby community. It’s interesting to see how he goes about it.


Chris Oliver[GoRails: A New Rails Screencast Series](https://gorails.com/)Ryan Bates might not be back yet, but this new collection of Rails-focused screencasts is pretty good.


Cloud66Sponsored[Build your own Heroku](https://www.cloud66.com/)Combine the convenience of Heroku with flexibility and price of running your own servers on DigitalOcean, Linode, AWS, Rackspace, Google Cloud and more.

[![Cloud66\](http://s3.amazonaws.com/nlga/uploads/item/image/18913/t.jpg)](https://www.cloud66.com/?utm_source=rubyweekly&utm_medium=email)


Chris Seaton[Pushing Pixels with JRuby+Truffle](http://www.chrisseaton.com/rubytruffle/pushing-pixels/)The Truffle runtime is an experimental implementation of a significantly faster and simpler interpreter for JRuby. Chris Seaton looks at how JRuby with Truffle is on average 9x faster than regular JRuby or MRI. Early days but interesting stuff.


GoRuCo 2014[The Future of Ruby Performance Tooling (video)](https://www.youtube.com/watch?v=cOaVIeX6qGg=UUWnPjmqvljcafA0z2U1fwKQ)Aaron Quint looks at how Ruby 2.1 has begun to provide us with a myriad of new features for debugging performance problems. This is deep stuff going down to the garbage collector, looking at object allocation maps, profiling, tracing, and more.


Ezequiel Delpero[The Most Common Mistakes on Legacy Rails Apps](http://edelpero.svbtle.com/most-common-mistakes-on-legacy-rails-apps)A look at a variety of examples of short bits of code that show off bad practices commonly found in old Rails projects.


GoRuCo 2014[How to Debug Anything (video)](https://www.youtube.com/watch?v=VV7b7fs4VI8=UUWnPjmqvljcafA0z2U1fwKQ)Debugging is a way of life for developers. James Golick explores the tools and techniques that have helped his diagnose defects in code over the years.


In brief

Curated by [Peter Cooper](https://twitter.com/peterc) and [Glenn Goodrich](https://twitter.com/ruprict), and published by [Cooperpress](https://cooperpress.com/).
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