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Posts by Andrzej Krzywda

Arkency logo

Arkency logo

There would be no wroclove.rb without our amazing supporters 💫

Arkency has been with us since the very first edition, and we’re extremely grateful to have them on board again this year - thank you for making our conference possible since day one! (1/3)

arkency.com

4 months ago 5 2 2 0
Andrzej playing chess

Andrzej playing chess

Since 2012, @andrzejkrzywda.bsky.social has been shaping wroclove.rb💎

A long-time DDD advocate, he recently took the stage with a keynote on how DDD fits into Rails ➡️ check it out youtu.be/3IlWgwkTV0s

Andrzej’s chessboard is coming to wroclove.rb - fancy a game with him in April?♟️

5 months ago 4 2 1 0
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Save the date! @wrocloverb.com is back on April 17–19, 2026 💎

We’ve got big plans to make this edition unforgettable. Stay tuned for updates - and see you in Wrocław!

6 months ago 11 6 0 1
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Our crew doesn’t just organize wroclove.rb - we also share our knowledge at other conferences 💡

This year, our co-organizer @jan.dudulski.pl took the stage at @friendlyrb.com with his talk "Back to Simplicity" - huge thanks to our friends there for having him!

6 months ago 6 3 0 1

Happy to share that I’m speaking at the ParisRb meetup on Tuesday, July 1st

I will talk about Rails and DDD, my lesson from the last 15 years of combining them together.

meetu.ps/e/PbpBx/dVM8l/i

9 months ago 9 0 0 0
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20 years in and people still fall in love with Rails

9 months ago 7 0 0 0
1. Joel Drapper - Ruby has literally always had types - wroc_love.rb 2025
1. Joel Drapper - Ruby has literally always had types - wroc_love.rb 2025

Time goes by and we're ready to show off all the great talks that we've had at #wrocloverb this year 🌟

Let's begin with @joel.drapper.me presentation on typing in Ruby and Literal - set of tools to help you write more expressive, confident Ruby. Enjoy!

10 months ago 7 3 0 0

Rails was the AI of 2000s.

✅Creating apps became much faster.
✅Testing business ideas became cheaper.
✅Business loved it.
✅VCs loved it.
✅Divided devs into enthusiasts and sceptics.

But when apps grew?
That’s when things got tricky.

10 months ago 3 1 0 0
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We specialize in human legacy Rails apps for years now.

The quality of AI generated rails code doesn’t seem much worse than human code to me.

some human „code tricks” might be even still more difficult to descrypt

the volume/scale is bigger with AI, though

11 months ago 2 0 0 0

🖐️

11 months ago 3 0 1 0

when are you flying? I was accepted too, for early June

11 months ago 2 0 1 0

One of the best parts of conferences is finally meeting people you’ve only known through GitHub & X.

Got to meet @andrzejkrzywda.bsky.social
@sethhorsley.bsky.social
@fractaledmind.bsky.social
@joel.drapper.me

#wrocloverb

1 year ago 10 1 0 0
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Let’s start this Ruby weekend in Poland 🔥

1 year ago 5 0 0 0

I want to get the recording 😎

1 year ago 0 0 1 0
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types in Ruby value objects

hot or not?

from @lucianghinda.com recent blogpost

1 year ago 14 2 5 0
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1 year ago 1 0 0 0

DDD is AI-friendly

clear modules and boundaries makes it easier to reason about for both humans and AI (smaller context!)

1 year ago 11 0 3 0
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Is your Rails application special? Hi, we're Arkency and it's our blog with meaty content.

New blog post on the Arkency blog!

Piotr has just published his first post, sharing our journey to stabilize a nearly 10-year-old Rails application for a client. The app was using a microservices pattern—but not in the most effective way.

blog.arkency.com/is-your-rail...

1 year ago 5 1 0 0

Congrats to the whole Unboxed company 👏

We are only 18yrs old now.

1 year ago 1 0 0 0

I posted 2 tweets on X today and X stopped working.

Sorry everyone 🤷‍♂️ (or not)

1 year ago 4 0 0 0

A friendly reminder that as Arkency we help with modernizing existing (legacy) Rails apps.

It doesn't matter if the Rails app was originally created by human devs or AI.

As such, we're big fans of AI, more business for us 😎

1 year ago 5 1 0 0

„You must be one of the oldest Rails agencies”

the message I just received

never thought about it this way, but yeah

1 year ago 11 0 3 0
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Shoutout to @szymonfiedler.bsky.social!

Szymon will present a practical methodology for verifying business logic equivalence during rewrites, focusing on isolating side effects and leveraging existing system behavior as a specification.

A cherry on top: real-world examples guaranteed 🤩

1 year ago 4 1 0 1
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Next Ruby conference to attend - @wrocloverb.com

April, 11-13

1 year ago 2 1 0 0
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Great time at the Ruby Community Conference here in Krakow, Poland.

Thanks to the organizers, speakers and sponsors 🙏

1 year ago 13 1 1 0

it was great to see you at the stage here, good talk, thanks 🙏

1 year ago 4 0 0 0
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TDD, spikes and mutation testing Andrzej on Software · Episode

#webdevelopment #ruby
There is a 6 minutes podcast that i share with some junior developers once per few months. I figured out i should share it there too: open.spotify.com/episode/5mX2...

Main wisdom of that one: "don't attach emotionally with your code".

1 year ago 7 2 2 0
Xamey Senior Software Developer

just published a new blog post about Rails Event Store and how you can easily integrate it in a new or existing app

from ActiveRecord callbacks to a pub sub system!

xamey.xyz/post/?sha=2c...

@lukaszreszke.bsky.social @andrzejkrzywda.bsky.social

1 year ago 7 2 2 1
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At first, I thought that Part 2 is not necessarily graph-friendly. But actually it is, with some trick like this:

It helped again to store neighbours with their relative direction from the node.

1 year ago 2 0 1 0
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Advent of Code, day 4

I went with graph traversal algorithm

1 year ago 3 0 1 0