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This post is part of a series. Check out Part II: The Lifecycle of a Response here! This post is a write-up of the talk we gave at RailsConf 2019. You can find the slides here. Most Rails developers should be pretty familiar with this work flow: open up a controller file in your editor, write some Ruby code inside an action method, visit that URL from the browser and the code you just wrote comes
Introducing Helix Rust + Ruby, Without The Glue. This post is a write-up of the talk I gave at RailsConf 2016. You can find the slides here. There's a lot to love about Ruby – the sweet syntax, the focus on developer productivity and happiness, the mature ecosystem, and of course, the awesome community we built around the language. One thing that Ruby is not known for though, is being a particular
Fixing That Mysterious Slow Request in Your Rails App Even if your Rails app is humming along just fine most of the time, your users probably still occasionally experience painfully slow requests seemingly at random. While unexplained slowdowns can happen for many reasons, the most common root cause is excessive object allocations. Here's the good news: there's something you can do about it. Garba
4 Easy Ways to Speed Up Your Rails App Some of the best ways to make your Rails app faster are dead-simple and quite often missed. The tragic part is that many of these problems come up over and over again and can be fixed quickly and incrementally. And the benefits of each of these improvements can be significant. This post focuses on four quick fixes you can apply to your Rails app that require
What I Learned About Hunting Memory Leaks in Ruby 2.1 I recently spent a bunch of time deep diving into some mystery memory leaks in Ruby. They were persistent and annoying, though not devastating by any means—the kind we could get away with ignoring for a long while, but shouldn't. Spoiler alert: we let them hang out for longer than we should have. The day finally came when we could no longer get
Rust Means Never Having to Close a Socket One of the coolest features of Rust is how it automatically manages resources for you, while still guaranteeing both safety (no segfaults) and high performance. Because Rust is a different kind of programming language, it might be difficult to understand what I mean, so let me be perfectly clear: In Rust, as in garbage collected languages, you never explic
Bending the Curve: Writing Safe & Fast Native Gems With Rust Last week at GoGaRuCo, I talked about how Rust bends the performance/safety curve and enables a whole new generation of high-level programmers to become systems-level programmers. That tradeoff loomed large when we started building Skylight. We knew that we wanted to process high-fidelity traces of every request, in order to provide you
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