Jonathan Frias

Ruby on Rails Dev. Cactus AI (YC X25) I write tips/tricks catered to help other experts

[Jonathan Frias @Jonathan_Frias]

I’m going to @sfrubyconf 🌥️✨

Do you have a thorny issue?
Is it hard to make any real changes?
Vibe coded AI slop?

You might need a sprinkle of elegance to simplify to move forward

Let’s connect. DMs open!

https://t.co/LvHdSO9zZF

[Jonathan Frias @Jonathan_Frias]

@bradgessler After years there’s finally a new answer to this question: portable authorization. https://t.co/9DdSCSTN62

[Kody Kendall @kodykendall]

@garrytan This is WHY Rails is a *crazy unlock*.

LLMs don't just write code, they make hundreds of architectural micro-decisions every time they generate it.

Rails: those decisions are already made. Convention over configuration.

JS: every project is a blank canvas. Every LLM call reinvents the architecture.

Same AI. Wildly different complexity curves over time.

@dhh @excid3 @inazarova @TonsOfFun111 @pberkenbosch @obie @JasonSwett @hwchase17

[Jonathan Frias @Jonathan_Frias]

Another open source bug fix!

You can now use the fantastic pgcli natively with the latest rails without having to enter your password every time!

https://t.co/uNsiRDCDST

[Jonathan Frias @Jonathan_Frias]

What a privilege to be tired from the work you once begged the universe for

[Jonathan Frias @Jonathan_Frias]

@Rothmus I believe food delivery demand is seen as inelastic because we have largely stopped teaching kids how to cook.

[Jonathan Frias @Jonathan_Frias]

@tomrossi7 @buzzsprout @rails @bitsweat @tenderlove That’s so awesome! Congratulations!

[Jonathan Frias @Jonathan_Frias]

@hawktrim Hey @hawktrim I post expert rails content. Feel free to look through my highlights, and let's talk :)

[Jonathan Frias @Jonathan_Frias]

@ahmednadar When launch? It’s still prelaunch tho

[Тsфdiиg @tsoding]

LLMs are just perfect normie traps. Normies will do anything to think less because they love being dumb. As soon as you present them a thing that allegedly allows them to think less they happily switch off their brain and don't even notice that the thing is actually garbage.

[Jonathan Frias @Jonathan_Frias]

I just got @Jonathan_Frias from the X Handle Marketplace! Get your own at https://t.co/Cegd9E2DXS

[San Francisco Ruby Conference, Nov 19-21, 2025 @sfrubyconf]

Something interesting is happening in the Bay Area.

New startups are launching on Rails.

Top tech companies are scaling with Ruby again.

Open source maintainers are pushing new boundaries...

[Jonathan Frias @Jonathan_Frias]

@BryanBeshore @bubble_email Damn haha it is getting real out here.

So Topkey uses rails?👀

[Jonathan Frias @Jonathan_Frias]

I had an issue where old deprecated code still referenced a deleted module. Could have caused an outage only in production were it not caught by this simple trick.

This is insidious because you won't find out your app can't boot until after migrations have already run

[Jonathan Frias @Jonathan_Frias]

@frantzfries So like some kind of score where you get credit for social interactions? 🤔 🇨🇳

[Jonathan Frias @Jonathan_Frias]

"Prefer duplication over the wrong abstraction" - Sandi Metz

I generally find this to be true and I'm willing to tolerate it until I fully understand the problem; here's a quick tip to help the whole team's future refactoring / discoverability with a self-documenting DUPE tag

[Jonathan Frias @Jonathan_Frias]

@andywang Wow this certainly shows serious dedication to solving a real problem

[Jonathan Frias @Jonathan_Frias]

@Eric_P8 @AvgDatabaseCEO I agree with that but the government has a legal monopoly and forced participation. So it’s not a fair comparison.

Considering how decisions make potential customers feel is shrewd business

I guess I’m saying why I wouldn’t choose to build it the way you said