1. The ability to repeatably and automatically build your servers in code is essential for managing a modern Ruby application's server infrastructure.

    Solutions such as Chef and Puppet are often used to solve this issue, but for some teams, this might be too costly to learn and implement effectively. Bridging the gap between these larger solutions and shell scripting is Ansible, a light footprint provisioning tool using SSH and YAML files to quickly define repeatable server creation and configuration steps.

    This talk will cover:

    introduce server provisioning at a high level explain how Ansible fits into that pattern describe simple Ansible commands and modules run through a basic playbook example, bringing these elements together summarise other functionality offered by Ansible

    # vimeo.com/90171333 Uploaded 325 Plays 0 Comments
  2. Not too long ago, a small group of developers inside Envato embarked on a mission: take an idea, and turn it into something real. To accomplish this goal, they didn't just have to build the product, but change the way they were writing and shipping code as well. In the end, the way they were delivering was radically different to anything they'd ever done before. The result? Mission accomplished.

    This talk explores the core tenets of the team's delivery process, and explores the reasons behind the decisions that were made. It mixes anecdotes with practical examples, showing how changing the way you think can really help get things done.

    Some of the tenets in the talk include:

    Level up your CI to continuous deployment Time is valued above all Staying lean with YAGNI Pay the refactor cost upfront Testing is best done in production Do things that don't scale Living on the bleeding edge The only way to move is forward After listening to this talk, you will know how easy it is to introduce these principles into your Rails app. You'll be armed with ideas of what you can take home to your team, in order to deliver better and faster than before.

    # vimeo.com/90173903 Uploaded 99 Plays 0 Comments
  3. From time to time, when building Ruby apps, you realise there are no libraries available for what you need. Even worse, Ruby doesn't quite perform as quickly as we would expect in certain areas. There are, however, a lot of high performance, mature technologies built in C that can easily be ported to be used with Ruby. By doing this, we get to keep using our favourite language, opening it to a plethora of applications that were not possible before, and still keep things snappy.

    In this talk, I will walk you through the ins and outs of building Spyglass, an OpenCV binding for Ruby. I will also talk in detail about some gotchas (memory management, lack of threading), good practices (C objects as first class citizens, how to properly test extensions), why mkmf needs to be retired and some great examples of extensions you probably already use and should be looking at.

    # vimeo.com/90174408 Uploaded 47 Plays 0 Comments
  4. Too many startups do this thing where they build their reputation with all these great technical blog posts and fascinating public talks, and then they become a Real Company and suddenly decide they're too cool to be open and transparent. Maybe the lawyers get to them, or maybe all the cool ninja rockstars become managers.

    In any case, I think that's stupid. I don't want GitHub to be one of those companies. I think the scaling problems we face — both technical and human — as we near five million users and 250 employees are super interesting to talk about and learn from.

    A lot of my talks like How GitHub Uses GitHub to Build GitHub and posts like How GitHub Works are nifty, but they represent a snapshot of the company when we were 30-75 employees. We're 217 today, and things inevitably changed to grow the company to that scale.

    This talk is a retrospective: it takes a closer look at specific things that we've said over the last few years, and then details the adjustments that were made as we've grown.

    # vimeo.com/90175385 Uploaded 207 Plays 0 Comments
  5. It's almost inevitable in any Ruby Project - you hit that stage where your logic starts getting more complex, you start doing more stuff that needs to happen but doesn't have to happen in the foreground - or you just want things to be faster.

    You move your logic out into workers and do the work in the background.

    This talk is going to be all about Sidekiq - a threaded background job implementation written in Ruby - and, in two parts: How you can use it and how you can bend it to your will.

    Part 1: Intro to Sidekiq

    The boring: a brief introduction to sidekiq, how it works - what it's advantages are. The stuff you need to know about it, why it's useful to consider - even if you're using CRuby / MRI.

    Part 2: Hacking Sidekiq

    The cooler part - once you know what Sidekiq is, I'm going to show how you can use Sidekiq in your product, how you can extend it and bend it to your will. I'll go into how it implements itself in ruby land and how it interacts with the Redis.

    I'll show how you can use the existing middleware (and write your own) to add behaviour to your code, patterns we've found useful for implementing and testing workers as well as the even more interesting side - using Lua support in Redis to implement stuff in Sidekiq.

    I want to encourage developers to look at extending their tool set to work better with not just ruby - to become comfortable with how they work internally (e.g. you should really learn how to love redis) and what you really need to be careful of (e.g. bugs that manifest when the site is under less load than usual - a real world example of going too far).

    Finally, I'll end with an important question: Why not just use a proper message queue?

    # vimeo.com/90180173 Uploaded 110 Plays 0 Comments

RubyConf Australia 2014

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