Matz on Ruby 2.0 at Heroku's Waza

Matz, the creator of Ruby, spoke at Waza for the 20th anniversary of the language and the release of Ruby 2.0. If you weren't in the sold out crowd, not to worry. Information should flow free and experiences should be shared; in line with those concepts you can watch Matz's talk right here, then read about what's new in this version of Ruby and how to run it on Heroku.

With slides available on speakerdeck

Keep reading for more information on Ruby 2.0 or check out our first batch of videos from Waza 2013. To stay up to date as we post new videos, follow us @heroku.


Iterating quickly means happier developers and happier customers. We optimize our platform to...

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Idea to Delivery: Application Development in the Modern Age. Adam Wiggins at Waza 2012 [video]

Great coders know their technology intimately. And they know how to choose it. Truly awesome application developers know more. They know the human side of technology. They know technique. They focus on their method—their practice.

In 2000 Heroku co-founder and CTO Adam Wiggins saw this more clearly than ever before. He read The Pragmatic Programmer by Andy Hunt and Dave Thomas. The book, as Adam explains in this thought-provoking (and method-shifting) Waza talk, showed him that his work could not only be about technology. It HAD to be about technique.

Heroku Co-founder, CTO and general badass, Adam Wiggins

Adam discusses techniques—historical ones such as agile development and the...

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Adding Concurrency to Rails Apps with Unicorn

With support for Node.js, Java, Scala and other multi-threaded languages, Heroku allows you to take full advantage of concurrent request processing and get more performance out of each dyno. Ruby should be no exception.

If you are running Ruby on Rails with Thin, or another single-threaded server, you may be seeing bottlenecks in your application. These servers only process one request at a time and can cause unnecessary queuing. Instead, you can improve performance by choosing a concurrent server such as Unicorn which will make your app faster and make better use of your system resources. In this article we will explore how Unicorn works, how it gives you more processing power, and how...

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Concurrency is not Parallelism. Rob Pike at Waza 2012 [video]

In planning Waza 2013 we went back to reflect on last year’s speakers. And we want to make the talks readily availble to anybody who could not make it last year—or who wants a refresher. Check back soon for more talks from Waza 2012. And we hope to see you in person at Waza 2013 coming up FAST on Feb. 28 in San Francisco.

In a world of evolving languages, frameworks and development patterns, we developers must continually improve our craft. Innovative developers already have jumped on board many of these shifts. We’ve seen this with the adoption of more agile frameworks (such as Rails, Django, and Play). We’ve seen it too with a shift towards asynchronous programming patterns such as in...

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Better Queuing Metrics With Updated New Relic Add-On

Today our partner, New Relic, released an update to the Ruby New Relic agent that addresses issues brought up by our customers. The new version corrects how New Relic reports performance metrics for applications running on Heroku. Queueing time is now reported as the total time from when a request enters the router until the application starts processing it. Previous versions of New Relic only reported queueing time in the router. The new approach will result in more accurate queueing metrics that allow you to better understand and tune the performance of your application.

Update, Feb 22:

New Relic has released a similar update for Python. Python developers should update to this latest...

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