Amsterdam.rb

# Ruby performance workshop time!!!

We are going to discuss web application performance, focusing on solving real-life issues.

This workshop (17:00 - 21:00 CEST) is aimed to mid-level engineers. More experience is always welcome.

## What?!

You'll learn how to use an Application Performance Management (APM) tool and identify common anti-patterns that cause significant latency and throughput problems.

We have a particularly problematic app that needs fixing, and it will be up to you to determine why it is slow and how you can make it perform better.

The key learnings:

• Browse APM traces and find bottlenecks
• Read and interpret SQL explains
• Identify common performance anti-patterns in web applications
• Understand index types and to figure out which indexes you need
• Practice A/B testing performance optimizations
• Use common caching issues
• Use some advanced SQL techniques

Most examples will focus on backend and database performance, but feel free to get creative and think of some out-of-the-box solutions!

Things you will need for this:

# Ruby game development workshop time!!!

We are going to learn how to convert a plain Ruby on Rails application into a real-time game engine, with no additional libraries.

This workshop (17:00 - 21:00 CEST) is for engineers at all levels.
However, judging by the previous editions, there is something new for almost anyone.

## What?!

You'll have a chance to work with a multiplayer, real-time game built with vanilla Rails.

We have a game, which needs some tweaks and new features. The workshop also includes a presentation on the key concepts needed for high-availability and robust applications.

The knowledge presented in the workshop is not limited to game development. It is directly usable in any Ruby on Rails application to increase its performance and reliability.

The key learnings:

• How to use Hotwire to broadcast a real-time game
• Command pattern usage for scaling application traffic
• Tactical Domain-Driven Design elements and their usage in Ruby on Rails
• Usage of AI for generating graphic contest

(!!!) And top of all that, we are going to fight an evil Wizard and hopefully, to save a Princess.

Things you will need for this:

• a laptop (duh) with access to
• Ruby,
• Postgres
• Redis

This workshop is created and delivered by the Polish Ruby community, and has been held at conferences such as Wroclove.rb and the Ruby Warsaw Community Conference.

Hello Rubyists!

Join us for this April for another wonderful meetup! We will have two talks, to be announced later. Join us to learn new things and chat with people from the community. Anyone interested in learning more about Ruby and the local tech community is welcome to join!

Program

• 18:00: Doors open, have a drink and some food
• 19:00: Opening statements
• First slot: Sebastian van Hesteren about database locking and job queues
• Second slot: Krzysztof Hasiński about 'Fantastic Databases And Where to Find Them'
• Until 21:30: Networking