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In early 2006 I had just started my career in IBM. I was the “Ruby Guy”[1] (or alternatively, the “Rails Guy”). During a meeting with a few high-profile engineers, I presented what Ruby brought to the table. An IBM Distinguished Engineer[2] stopped me in my tracks and said, “It sounds slow”. I love Ruby as much as a programmer can possibly love a programming language, but that engineer’s conjectur
My previous post about using Project Euler to experiment with new programming languages, or learn programming altogether, was for the most part met with positive feedback online. The common theme amongst those who didn’t love it however, was that Project Euler is too math-focused and not very real-world oriented (unless you mostly do math research). Commenters on various social sites also recommen
Someone came up with a list of 10 one-liner examples that are meant to showcase Scala’s expressiveness. A CoffeeScript version quickly emerged, so I thought I’d publish a Ruby one. I find Ruby’s syntax to be a bit cleaner than Scala’s, but the substance (at least as far as these examples are concerned) is relatively similar. Multiply each item in a list by 2 (1..10).map { |n| n * 2 } Sum a list of
The Great Ruby Shootout measures the performance of several Ruby implementations by testing them against a series of synthetic benchmarks. Recently I ran Mac and Windows shootouts as well, which tested a handful of implementations. However this article reports on the results of extensive benchmark testing of eight different Ruby implementations on Linux. The setup For this shootout I included a su
My previous post about Clojure generated quite a bit of interest, so I thought I’d follow it up with something a bit more concrete. I primarily wrote this article for a friend who asked me for guidance on how to set it all up; and while this isn’t he only way to setup Clojure, I hope it will help other people who are also getting started with this great language. As some people pointed out, settin
This post contains the results of a Ruby shootout on Windows that I recently conducted. You can find the Mac edition, published last month, here. I was planning to have this one ready much sooner, but a couple of serious events in personal life prevented that from happening. Be sure to grab my feed or join the newsletter to avoid missing the upcoming Linux shootout. The setup For this shootout I i
Recently MacRuby 0.6 was released. The development team put a lot of emphasis on improving compatibility with Ruby 1.9, and the viability of MacRuby as a tool for developing Mac OS X applications. Focus on these aspects took precedence over performance, but I was still curious to see how well it performed when compared to Ruby 1.8.7 and Ruby 1.9, respectively. This article showcases the results of
* In fairness, it becomes very easy and low maintenance if deploying Ruby on Rails to a VPS (or any server) with a great tool like Hatchbox. Highly recommended if you go the VPS hosting route. Please do consider reading the article, as it will provide you with more information about the various hosting options. Ruby on Rails Hosting: what you need to know! I’ve been working with Ruby on Rails sinc
Monte Carlo simulation of the Monty Hall Problem in Ruby and Python Reading Jeff Atwood’s post The Problem of the Unfinished Game, reminded me of a similar problem. The Monty Hall Problem is a well known probability puzzle that has tricked many people. In fact, if you are not familiar with it already, chances are that you’ll get it wrong. And you would be in good company along with many mathematic
The following is a very short guide on setting up Ruby Enterprise Edition (REE), nginx and Passenger, for serving Ruby on Rails applications on Ubuntu. It also includes a few quick and easy optimization tips. We start with setting up REE (x64), using the .deb file provided by Phusion: wget https://rubyforge.org/frs/download.php/66163/ruby-enterprise_1.8.7-2009.10_amd64.deb sudo dpkg -i ruby-enterp
Benchmarking Tornado vs. Twisted Web vs. Tornado on Twisted FriendFeed, which was recently acquired by Facebook, just released an interesting piece of open source software. Tornado is an open source version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like web.py or Google’s webapp, but with a
A faster Ruby on Windows is possible (benchmarks for 4 implementations inside) In yesterday’s post I compared IronRuby 0.9, Ruby 1.8.6 (from the One-Click Installer) and Ruby 1.9.1 (downloaded from the official site) against one another. IronRuby did great, but the discussion in the comment section quickly veered towards what version of the One-Click Ruby Installer should have been used. I justifi
Comparing the performance of IronRuby, Ruby 1.8 and Ruby 1.9 on Windows In my latest article I discussed the importance of JRuby as a means of introducing Ruby to the Enterprise world. Most of the companies that belong to this ecosystem are Java based, but we cannot forget that a sizable portion of them are Microsoft-centric. Within these companies, Ruby will be far more welcome if a .NET implemen
Wikipedia defines memoization as “an optimization technique used primarily to speed up computer programs by having function calls avoid repeating the calculation of results for previously-processed inputs.”. This typically means caching the returning value of a function in a dictionary of sorts using the parameters passed to the function as a key. This is done in order to reuse that returning valu
Over the years the inadequacy of Ruby’s main implementation has led to the creation of several alternatives. The greatest common divisor between these is an attempt to improve the performance of Ruby, both in terms of time and space. But every Ruby implementation has another, deeper reason for being. For example, Ruby 1.9.1 is a refactoring of the language that provides the chance to incorporate s
One of the many advantages of having remarkable friends is learning quite early on about their most ambitious and interesting projects. Today, I’m going to talk about Redis, one such project that my friend Salvatore “antirez” Sanfilippo started. Redis (REmote DIctionary Server) is a key-value database written in C. It can be used like memcached, in front of a traditional database, or on its own th
Within the Rails community, New Relic is a company that doesn’t need any introductions. They are synonymous with performance and reliability, thanks to their RPM product for monitoring, detecting, and fixing Rails application performance problems in real time. What everybody may not have noticed though, is that New Relic started something called RailsLab, a site in which they publish videos and ot
The long awaited Ruby virtual machine shootout is here. In this report I’ve compared the performances of several Ruby implementations against a set of synthetic benchmarks. The implementations that I tested were Ruby 1.8 (aka MRI), Ruby 1.9 (aka Yarv), Ruby Enterprise Edition (aka REE), JRuby 1.1.6RC1, Rubinius, MagLev, MacRuby 0.3 and IronRuby. Disclaimer Just as with the previous shootout, befor
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With the amount of good Ruby and Rails books already on the market, you’d think 2008 would be a shy year when it comes to publishing new titles, but nothing could be further from the truth. The following books are all to be released this month or in May, and there are many more coming out this summer. Do we really need another 7 titles on the market within 2 months time? Interestingly, the answer
Rails has been a blessing and a curse for the Ruby community. It brought sudden popularity to the language with all the consequences, good and bad, that usually result from exponential growth. On one hand, it gave many developers the chance to appreciate the design of the Ruby language based on its own merit. On the other hand though, it’s been a cash cow that’s changed the community forever by at
It saddens me to learn that the Ruby.NET project is dead. About 5 minutes ago, Dr. Wayne Kelly announced the following in the Ruby.NET Mailing List: Ruby.NET started life in 2005 as an academic research project with the goals of learning more about the challenges of mapping a dynamic language such as Ruby onto the relatively static CLI platform. When we released our first beta in 2006, many people
Lately the Ruby community has experienced a surge of new web frameworks. Most of them are respectable and promising open source projects created by people who tried to create lightweight but valid alternatives to Rails. Do I think that they will rise to fame just like Rails did? Of course not, but they are not hopeless copycats either, because they express a different “software opinion” while main
Installing Django on Mac OS X Leopard is supposed to be very straightforward, but if you are new to it, you may encounter a few puzzling questions and, in the case of MySQL, even a couple of headaches. I’m writing about this for the benefit of those of you who may attempt and struggle with this feat. MacPorts is not required for this how-to. First and foremost, we are going to install Django from
Alright the title of this post is a tad sensational sounding, I know, and it’s in part aimed at messing with my many Pythonista friends. We Rubyists have been teased for a long time, due to the slowness of the main Ruby interpreter. Well, it looks like with Ruby 1.9, it’ll be payback time. Just out of curiosity I decided to run a single benchmark (you can hardly call it that) to see how Ruby 1.9 h
In his article, ”Desktop Applications are Dead”, Eugueny Kontsevoy – a Windows developer – argues sarcastically about the demise of Desktop applications. His article has real merit though and focuses almost exclusively on the problems which are introduced by Vista’s aggressive security policies. The annoying aspect of Windows Vista’s “cancel or allow” is undeniable, especially if seen through the
I love to anticipate trends in the industry, because it can give you that warm fuzzy feeling of betting on the right horse. Particularly, I find satisfaction in seeing a small, welcoming community grow and slowly observe fellow programmers adopt a language, framework or technology that I deeply care about. This is the type of evangelism that I like: bringing to the attention of other programmers i
Ruby Implementations Shootout: Ruby vs Yarv vs JRuby vs Gardens Point Ruby .NET vs Rubinius vs Cardinal Many brilliant developers are working on improving the current implementation of Ruby and on creating alternatives. I was curious about their current respective speeds, so I installed and ran some benchmarks for the most popular implementations. In this article, I’m sharing the results for the c
The performance of Ruby on Rails is influenced by many factors, particularly the configuration of your deployment server(s). However the application code can make a big difference and determine whether your site is slow or highly responsive. This short article is about some of the tips and best coding practices to improve performances in Rails only, and won’t attempt to cover the server configurat
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