JRuby has just been updated for Ruby 3.1 support, bringing compatibility up to date for the most widely-deployed alternative Ruby implementation! This talk will teach you all about JRuby: what is it, when should you use it, how to get started and why it matters. Learn why Ruby shops around the world choose JRuby for world-class concurrency, GC, JIT, and cross-platform support.

To help us with aspects like linting, security or style, many of us have Rubocop analyzing our code. It's a very useful tool that is widely used, easy to set up and configure. Rubocop can even automatically auto-correct your source code as needed. How is this even possible? It turns out that Ruby is really good at taking Ruby code as input and doing various things based on that input. In this talk, I will go through some of the internals of Rubocop to show how it analyzes and makes changes to your source code.

Wondering how to get involved in supporting your communities? Hear from someone who has spun up (and down) multiple volunteer and service projects. May it spark your imagination -- and your heart -- to join or start helping out both this wild world and yourself. New mutual aid groups formed around the world in 2020. The tools were not ideal and the volume overwhelmed volunteers. A handful of of tech folx built a fit-to-suit app to manage immediate needs and maximize impact of partner mutual aid groups. Wins were achieved. Lessons were learned. And the interconnectedness of all things was felt.

Like most web applications, you run important jobs in the background. And today, some of your urgent jobs are running late. Again. No matter how many changes you make to how you enqueue and run your jobs, the problem keeps happening. The good news is you're not alone. Most teams struggle with this problem, try more or less the same solutions, and have roughly the same result. In the end, it all boils down to one thing: keeping latency low. In this talk I will present a latency-focused approach to managing your queues reliably, keeping your jobs flowing and your users happy.

My talk shows how to write Ruby in a non-English language and the benefits of doing so. This will certainly be a great help for people who don’t speak English. It also helps get a better programming perspective for seasoned developers who don’t have English as their first language. I will also demo the tooling that I have developed, using which one can quickly create a new spoken language variant of Ruby and start programming in Spanish, Portuguese etc.

Wealthsimple Foundation is a Canadian charity working to enable a brighter future for everyone in Canada through access to post-secondary education. The Foundation is supported by Wealthsimple, which builds a variety of digital financial tools trusted by over 2.5 million Canadians. In this talk we'll go over: - How an organization supporting for-profit and non-profit activities is structured (and the ethical considerations that can arise from that) - Responsibilities of engineers working in a non-profit space - Opportunities and challenges of digital products addressing systematic inequalities

In this talk, we'll generally explore the static type eco system in Ruby. Ruby has two main type checkers Sorbet and RBS. Sorbet was created by the Stripe and RBS is supported by ruby. Sorbet is an annotation base type checking system while RBS is a definition file-based type system. We'll add type annotation for a popular gem using sorbet and RBS and then compare the differences between the two systems. There is lot of interoperability announced between Sorbet and RBS and we'll explore if it's practically possible to convert a sorbet annotated project to RBS.

In the 2000's everyone was writing a Ruby web framework **Today, it seems, we are all too content to focus our energy on a small number of large Ruby web projects**. What happened to our creative spirit? In this talk we focus on Ruby web frameworks that have long gone by the wayside. I won't spoil them here, but I can tell you what we won't be covering: * Sinatra * Hanami * roda * merb We will answer questions like: * Why are fewer people experimenting with their own frameworks today? * What features, idioms and ideas are worth exploring? * Are any of these frameworks worth reviving or copying?