#RubyConfBY 2019 is coming!
The 5th large technological Ruby, Rails and related technologies conference. Leaders from Eastern+Western Europe and USA will gather to discuss technological aspects of development with Ruby.
Our keynote
Many more speakers to come. Stay tuned!
@tenderlove, GitHub, USA
Ruby & Rails СoreTeam member, top 1 contributor to Rails & RubyHero 2010
Renowned speaker at numerous international events, and author of Nokogiri (XML parser) and Psych (YAML parser). One of Ruby's most respected and loved programmers.

He has improved ActiveRecord substantively in usability and performance and is also on the Ruby and Rails security teams.
Professional team of conference & meetup organisers in Minsk, Belarus
Community of Belarus' Ruby developers
Become a partner!
Your Partner Account Manager is Misha Malikin:
+375 29 678−56−34, misha@eventspace.by
Media Partners
Previous Years' Partners
Some pictures from last year
See 276 more on our Facebook page
How it felt like in 2018
Speakers and Talks of 2018
Watch more RubyConfBY talks on YouTube:   2017   2016   2015
Bozhidar Batsov
@bbatsov, Bulgaria
VP Engineering @Toptal
@mikhailbortnyk, Ukraine
Language researcher and VM geek, Developer @N-iX
@margOnline, UK
Senior Software Developer @Money Advice Service
@wintermeyer, Germany
Old school Rails consultant, trainer and author of the apress Ruby on Rails 5.2 book
@apneadiving, France
Ru(g)by fan, Ruby on Rails freelancer
Whenever Open-Source meets deep and profound debates about architecting software, and there's free beers involved, Nick Sutterer must be just around the corner.

Say Hi to him, he loves people.
I'm Head of Web in Artec3D. We produce the best hand-held 3D scanners in the world. There is a lot of data processing, which means we have a different perspective on high-loads.

I like it when the solution goes beyond specific framework or the exact programming language and even the operation system. It's obvious these solutions save resources and hardware as well as it helps to catch edge cases in the early stages. The most efficient solutions are based on a mix of paradigms and best-practices.

Also I like cats ^.^
Ruby developer for 6 years.

One of creators of Kiev's local Ruby and Erlang courses Kottans.org.

Language researcher and VM geek.
After graduating from a UK dev boot camp, Margo has worked as a developer at a digital product studio, a multinational retail company and a public sector organisation.

In all of these positions, she has participated in interviews on both sides of the table.

Three years ago she started the W London chapter of Codebar. Margo is currently working as a senior developer with the Money Advice Service in London.
Old school Rails consultant, trainer and author of the apress Ruby on Rails 5.2 book
Backend developer at Evil Martians, maintainer of Ossert, open-source enthusiast and street drummer.

I believe that future of our tech and education is in open-source way of collaboration.
Ruby and Elixir guy with math background. Dedicated 7 years to making web apps on Rails and supporting startup ideas. Love mentoring developers, adventures and traveling. Motivated to try everything and think "fail fast, success sooner".
Web developer for 3 years who loves open-source and conferences. Ruby makes me happy and keeps me sane. Lover, writer, filmophile and an avid reader.
In this talk we'll go over everything you need to know about RuboCop - a powerful Ruby static code analyzer that makes it easy for you to enforce a consistent code style throughout your Ruby projects.

We'll begin by examining the events that lead to the creation of RuboCop, its early days and its evolution, effective RuboCop usage and some of its cool but little-known features. Then we'll continue with a brief look into RuboCop's internals and show you how easy it is to extend its functionality.

We'll wrap the talk with a glimpse inside RuboCop's future and discuss some of the challenges the project faces and some of the work that remains to be done, before RuboCop finally reaches the coveted 1.0 version.
Reviewing just-in-time compilation as a possible future way to speed up Ruby 3.0, comparisons of implementations and different benchmarking ways.

I will tell a little about JIT theory and a lot about existing implementations (starting from JRuby+Truffle, ending up with MJIT and LLRB).

Warning: a lot of graphs, benchmarks, LLVM, JVM and Ruby source code.
Nowadays, unit tests are an essential part of our development process. While we are proud we have 100% test coverage; it does not mean that our code behaves as expected, notably when we deal with external APIs.

I'm working on the eBaymag project which mostly built around various API interactions: eBay API, Google Translate API, DHL API and so on.
I solve different sophisticated problems based on unexpected API behavior on my daily basis.

So I want to introduce a contract-based testing framework that aims to get rid of unexpected behavior of your app. I'll share the tools and approaches that will minimize the risks of being dependent on some external system API.
Speed is paramount for the success of a website (key for a good conversion rate and SEO). Unfortunately Webperformance is not a strong suite of a vanilla Rails application.

Let's optimize an example Ruby on Rails 5.2 web shop application and analyze before/after times. I'll show the audience where it makes sense to spend time to optimize and where not. Use the new 5.2 goodies!

Side effect: By making your Rails app faster you'll save server costs.
The importance of soft skills for successful developer teams cannot be overestimated.

First impressions set the tone for developer relations and the interview is where you make that first impression.

Here are a few ways companies got it right and got it wrong; and how you can take control to start things off on the right foot.
Making tired on developing "new-Snapchat-with" or "app-like-Airbnb-but" or doing something like "ok, I will copy that from that project, add design and go to production" sounds familiar to you? Was ruby worth it to learn and use it for all these years? Let's see what more can ruby do for you!

We will start with top level overview about options you have today (they will make your life is a developer challenging), then will go down to real world case(-s) and, hopefully, will make something working together. I want to present my experience and will guide you on what can ruby do with machine learning, so often called AI today.
Just before Christmas we launched a new body-measurement feature for our shapify.me project. A person goes into the 3D booth, gets scanned, and the body-measurements are calculated with the 3D scan data. We couldn't avoid using a GPU with these calculations.

How to install this branch of processing into our elegant scaling pipeline? When you're dealing with 3D scans you should remember two things: it's expensive and time-consuming. By the way, its workload fluctuates throughout the days. The easiest solution for us was to use Docker.

This speech is not about mining, but the most helpful articles for us were ones such as "Building your own mining farm". That's because we use quite a similar infrastructure.
GPU, Docker, scaling. What we achieved, where we failed, and what it became of it in the end is all included in my speech.
Whenever things can get wrong and you need a way to go back to a consistent state, ACID (and service objects) gets your back. We will explore some patterns to go back on your feet even if you have to orchestrate many database writes and even third party: queues, api calls.
A blazing fast voyage through the jungle of object-oriented programming, onwards to functional discipline, up to my rediscovery of an ancient, long-lost art: Enterprise software!
RubyConfBY 2019 Code of Conduct
All attendees, speakers, sponsors and volunteers at our conference are required to agree with the following code of conduct. Organisers will enforce this code throughout the event. We are expecting cooperation from all participants to help ensuring a safe environment for everybody.

RubyConfBY 2019 Conference is a community conference intended for networking and collaboration in the IT community. Our goal is to create the best event. We want every participant to be able to focus their full attention on talks and networking. This is impossible to do if you are being harassed, stalked, or discriminated against.

We value the participation of each member of the community and want all attendees to have an enjoyable and fulfilling experience. Accordingly, all attendees are expected to show respect and courtesy to other attendees throughout the conference and at all conference events, whether officially sponsored by RubyConfBY 2019 Conference or not.

To make clear what is expected, all delegates/attendees, speakers, exhibitors, organizers and volunteers at any RubyConfBY 2019 Conference event are required to conform to the following Code of Conduct. Organizers will enforce this code throughout the event.

RubyConfBY 2019 Conference is dedicated to providing a harassment-free conference experience for everyone, regardless of gender, sexual orientation, disability, physical appearance, body size, race, or religion. We do not tolerate harassment of conference participants in any form.

All communication should be appropriate for a professional audience including people of many different backgrounds. Sexual language and imagery is not appropriate for any conference venue, including talks.

Be kind to others. Do not insult or put down other attendees. Behave professionally. Remember that harassment and sexist, racist, or exclusionary jokes are not appropriate for RubyConfBY 2019 Conference.

Harassment includes offensive communication related to gender, sexual orientation, disability, physical appearance, body size, race, religion, sexual images in public spaces, deliberate intimidation, stalking, following, harassing photography or recording, sustained disruption of talks or other events, inappropriate physical contact, and unwelcome sexual attention.

Exhibitors in the expo hall, sponsor or vendor booths, or similar activities are also subject to the anti-harassment policy. In particular, exhibitors should not use sexualized images, activities, or other material. Booth staff (including volunteers) should not use sexualized clothing/uniforms/costumes, or otherwise create a sexualized environment.

Be careful in the words that you choose. Remember that sexist, racist, and other exclusionary jokes can be offensive to those around you. Excessive swearing and offensive jokes are not appropriate for RubyConfBY 2019 Conference.

Expected Behavior

  • Participate in an authentic and active way. In doing so, you contribute to the health and longevity of this community.
  • Exercise consideration and respect in your speech and actions.
  • Attempt collaboration before conflict.
  • Refrain from demeaning, discriminatory, or harassing behavior and speech.
  • Be mindful of your surroundings and of your fellow participants. Alert community leaders if you notice a dangerous situation, someone in distress, or violations of this Code of Conduct, even if they seem inconsequential.

Unacceptable Behavior

Unacceptable behaviors include: intimidating, harassing, abusive, discriminatory, derogatory or demeaning speech or actions by any participant in our community online, at all related events and in one-on-one communications carried out in the context of community business. Community event venues may be shared with members of the public; please be respectful to all patrons of these locations.

Harassment includes: harmful or prejudicial verbal or written comments related to gender, sexual orientation, race, religion, disability; inappropriate use of nudity and/or sexual images (including presentation slides); inappropriate depictions of violence (including presentation slides); deliberate intimidation, stalking or following; harassing photography or recording; sustained disruption of talks or other events; inappropriate physical contact, and unwelcome sexual attention. Attending the event under the influence of alcohol or other narcotic substances is unacceptable.

Consequences of Unacceptable Behavior

Unacceptable behavior from any community member, including sponsors and those with decision-making authority, will not be tolerated. Anyone asked to stop unacceptable behavior is expected to comply immediately.

If a community member engages in unacceptable behavior, the community organizers may take any action they deem appropriate, up to and including a temporary ban or permanent expulsion from the community without warning (and without refund in the case of a paid event).

Thank you for helping make this a welcoming, friendly event for all!

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Please text the organizer: daria@eventspace.by
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