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Past presentations ~ RSS

June 14, 2016

Phoenix -- Productive. Reliable. Fast

by Chris McCord

Phoenix is an Elixir web framework for building productive, reliable applications with the performance to take on the modern computing world. Together, we’ll review what makes Phoenix great and how it uses Elixir to optimize code for performance – without sacrificing programmer productivity. Along the way, we’ll see neat features like live-reload and generators and how Phoenix’s realtime layer takes on the modern web.

Rails to Phoenix

by Brian Cardarella

You may have heard about Phoenix and Elixir. It is a language and framework that give you performance without sacrificing productivity. Learn why Phoenix is a great choice for Rails developers and how you can introduce it into your organization.

April 12, 2016

Building a Rails API with the JSON API Spec

by Sonja Peterson

So you're building a Rails API and you want to do it right--following RESTful best practices, with endpoints that can sideload related resources, paginate and filter with grace. The JSON API Specification (jsonapi.org) aims to help you do this without spending a month bikeshedding or reinventing the wheel. But does it really work? Based on my experience using it in my last project, this talk will help you decide whether to use it and how to do so with Rails.


by Luís Ferreira

Crystal is a language that looks a lot like Ruby, but is much faster and protects against certain errors, like preventing variables from being nil. Crystal’s standard lib comes bundled with support for WebSockets, OAuth and other nice utilities. It has a very simple testing framework, dependency management system, and even web frameworks. This is a very exciting time to come aboard the Crystal train, especially coming from a Ruby background.

March 8, 2016

Butterfly in Reverse: From SOA to Monolith

by Mark Bates

OA, SPA, JSON APIs, all the big buzz words. I spend my days building these for my clients. When I started working on my startup we were going to build it “the right way”. So why is it a single monolith with full page refreshes and almost no JavaScript? Excellent question!

Cloud Based Proxies for Rack apps

by Vincent DeVendra

This talk will detail some of the lessons the speaker learned from writing a gem that allows its users to easily implement a cloud-based proxy cache for their Rack app. Proxy caching is similar to a browser caching, except that the cache is shared by every client making requests to a server. So, as soon as one client requests a given path, any subsequent requests to that same path will return the cached version (as long as certain conditions are met). The gem implements a Rack middleware to catch requests and return cached responses before a server is ever hit. That means public pages that don't change often can load lightning fast and the burden on a server can be substantially lightened.

February 9, 2016

Building Web Applications with Hanami (Lotus)

by Tim Raymond

Hanami (formerly Lotus) aims to be Rails rebuilt with an eye towards modularity and composability. Hanami’s components work well together, giving you the full framework experience that you’ve enjoyed in the past with Rails. However, they’re modular enough that you can use parts of Hanami to augment your existing applications. We’ll take a tour of the framework and see how apps written in it compare to their equivalents in Rails and Sinatra along the way.

API Integrations for the Excessively Paranoid

by Alex Jarvis

When we integrate with external services, we are designating a new source of truth in our application, and we as developers have a responsibility to respect this truth with a rigorous interface. How can we move beyond 'service objects' and avoid a VCR-blasted test-suite while still maintaining tests that *actually* cover our new truths? In this talk, I'll propose breaking down the integration into layers of interface with our system, and discuss ways to separate their various duties through POROs. The end result: Exhaustively tested, easily readable integrations for those who think someone might be watching.

January 12, 2016

How to Performance

by Eileen Uchitelle

Understanding performance output can feel like reading tea leaves. It makes sense to a few people, but many of us are left in the dark; overwhelmed and frustrated by the data. On top of that there are a ton of performance tools to choose from; StackProf, RubyProf, AllocationTracer. Where do you even start? While working on speeding up integration tests in Rails source, I learned that the key to improving the performance of Ruby code is having a baseline, not relying on one profiler and understanding the advantages and limitations of your tools. By utilizing these methods, integration tests are now 3 times faster than they were in Rails 4.2.0, with more improvements being made every day. In this talk we will not only look at how to read performance output, but when and how to use the right profilers for the job. We'll discuss a variety of methods and techniques for benchmarking and profiling so you can get the most out of any performance tool.

Fast Metaprogramming with Truffle

by Kevin Menard

Metaprogramming is a powerful technique that sets Ruby apart from other contemporary languages. It allows compact and elegant solutions to seemingly intractable problems. Serving as the foundation of some of the mostly widely used frameworks and DSLs in the Ruby ecosystem, it’s arguably the single most defining feature of Ruby. Unfortunately, that expressive power has traditionally come at the expense of performance. We’ll show you how JRuby+Truffle has eliminated the cost of metaprogramming so Rubyists can write idiomatic Ruby without having to worry about hidden performance trade-offs.

December 8, 2015

Holiday Party

by Community

It's that time again! Last year, instead of a regular meetup, we hosted our first BostonRB Holiday Party and it was a great success. Join us again this year for an evening of fun, networking, eating and drinking as we put a bow on a phenomenal season of great talks, great speakers and a thriving Ruby community. Huge thanks go out to Autodesk for sponsoring this event. Our food menu includes both vegetarian and non-vegetarian options. We hope you'll join us!

November 10, 2015

Third-Party Integrations at Scale

by James Daniels

Practices learned for integrating with third party services at scale; whether you're sending push notifications to Apple, pinging people on Slack, grabbing information from Google, or pushing a deep integration with another service. We'll go over lessons learned in general design patterns, credential storage, handling validation/failure, api limits, and back off; both applicable to Ruby micro-services and monoliths.

October 13, 2015

A Muggle's Guide to Tail Call Optimization

by Danny Guinther

Submitted for your approval: a circle of torment unchronicled by the poets of old, a terror at the heart of many a horror story: SystemStackError: stack level too deep Tremble no more! Conquer the well of eternity! Behold the secrets of tail recursion and tail call optimization in Ruby! Witness the metamorphosis of a simple function as we explore the hidden power of tail call optimization buried deep within the Ruby VM! Follow the transformation to the revelation of tail call optimization's most ghastly secret: in many ways it's really just a special type of loop construct! The horror!

Mocking Language

by Sam Phippen

What’s a mock? What’s a stub? How about a spy? Or a double? There are a lot of different tools to create isolated tests in RSpec. The terms aren’t necessarily totally clear. In this talk, we’ll look at what the different kinds of test isolation tools in RSpec are for, some testing smells they can create, and how to fix those smells. This talk will be perfect for those already a little familiar with RSpec and looking to improve their testing skills.

September 8, 2015

React on Rails

by Conner Wingard

React is a powerful JS (I know!) library for building user interfaces. Our goal is to build a blogging app with markdown editor and live HTML preview powered by Ruby on Rails and React. In doing so we will learn what makes React more than yet another JS library blowing up Hacker News.

Container-based Development with Docker

by Brian Kaney

This is a different kind of Docker talk. We will side-step deployment orchestration. We won't mention scheduling and service discovery. And we won't even talk (much) about docker repositories. Instead, it's all about developers! Building applications today using Docker has never been easier. We will look at why using Docker now in development makes sense. Then dive into using new tools, techniques, and workflow practices. We will also cover emerging community "container trends". Folks should leave this talk feeling ready to try container-based development.

August 11, 2015

Have you ever wanted to make a video game?

by Samuel Backus

Creating games can be as fun and rewarding as playing them but it can be hard to know where to start. This talk will explore a few principles of game design and the fundamentals of the Game engine, Hasu. We'll also dive into some live coding examples.

Ruby Rails Performance and Profiling

by Danny Guinther

Ever wanted to understand how to do benchmarking and what profiling an application means? This talk will introduce you to these concepts and walk you through some of the best tools we have in the Ruby community to do that type of work.

June 9, 2015

Constraining API's with Schema

by Tanner Burson

What trick do companies like Google and Heroku know about API development that you don't? How do they reduce the maintenance burden of maintaining client libraries while also making their server-side validation and response generation simpler? Schemas! Whether you're building APIs for the public, for internal micro-service infrastructures, or even just consuming other's APIs, Schemas can make your life easier. This talk will break down the differences between Descriptive Schemas and Prescriptive Schemas, and when you might want to use each. We'll look at real examples of usage in the wild, and tips for implementing Schemas in your environment.

Crafting Your First Pry Plugin

by Danny Guinther

Pry bills itself as "a powerful alternative to the standard IRB shell for Ruby", and it ain't kidding. With integrated tools like Slop and Method Source, Pry is a full-fledged Swiss army knife of command-line kung-fu at your disposal. But why stop there? With an architecture built for plugin extension, the limits of Pry are really only a reflection of the limits of your own imagination. So come learn the basics of creating a Pry plugin as we dive into some of Pry's internals and walk through the process of creating a plugin that adds a custom command to the Pry CLI. Where you take it from there, only you know.

May 12, 2015

Cultivating a Code Review Culture

by Derek Prior

Code reviews are not about catching bugs. Modern code reviews are about socialization, learning, and teaching. How can you get the most out of a peer's code review and how can you review code without being seen as overly critical? Reviewing code and writing easily-reviewed features are skills that will make you a better developer and a better teammate. You will leave this talk with the tools to implement a successful code-review culture. You'll learn how to get more from the reviews you're already getting and how to have more impact with the reviews you leave.

Breaking up with the Asset Pipeline

by Patrick Robertson

Rich client applications with complex JavaScript and CSS libraries are not going anywhere. Unfortunately, the Rails toolchain is not well suited for development in this brave new world. In this talk, we'll walk through why breaking up with the asset pipeline is necessary, alternative tooling options that will improve development speed and ease of production deployment.

April 14, 2015

Why Your New API Product Will Fail

by Scott Feinberg

Congrats! You've built the one API to control them all, and it's amazing. It's fast, well-architected, and Level 3 Hypermedia. However everyone is still using your competitors sub-par product... Why? We developers are lazy and you're making it hard for us to use. We're diving into your SDKs tests to solve basic tasks, your SDK + API errors annoy and don't help us fix our mistakes, and the lack of logical defaults leaves us playing parameter roulette. Let's explore how to build API-enabled products that fellow developers will love using with great docs, tooling, support, and community.

Ruby Science

by Richard Schneeman

Run your app faster, with less RAM and a quicker boot time today. How? With science! In this talk we'll focus on the process of turning performance problems into reproducible bugs we can understand and squash. We'll look at real world use cases where small changes resulted in huge real world performance gains. You'll walk away with concrete and actionable advice to improve the speed of your app, and with the tools to equip your app for a lifetime of speed. Live life in the fast lane, with science!