At #RailsWorld, @ryan_sherlock takes us inside @fin_ai's Rails monolith to show what…
This is a dev post classified by Jev as AI dev tools (a free resource), kept by the Dev Radar because it carries real work, not commentary.
At #RailsWorld, @ryan_sherlock takes us inside @fin_ai's Rails monolith to show what happens when AI agents dramatically increase the amount of code moving through a large scale system (3M+ lines of code, 100k+ tests, a P50 suite time of around 3 minutes, and merge-to-customers in under 10 minutes). Ryan unpacks the Ruby, Rails, CI, orchestration, observability, rollback, and automated AI review guardrails that helped Fin get speed and safety pulling together again. If you’re thinking about how Rails teams can keep shipping fast as agents change the pace of software development, this is one
Posted by Ruby on Rails (136.9k followers) 5 days ago · 22 likes · 4.6k views · view the original post on X. Kept by the Dev Radar as AI dev tools.
More dev work like this
- Hallmark has been installed 50k+ times! — @nutlope
- Your AI coding agents need a workflow, not more babysitting. — @DanKornas
- Register by October 7 and save >> https://bit.ly/4vkntyD — @linuxfoundation
- Nimble is able to process images! — @madiator
- Your agent already solved this. Finding the session is the problem. — @DanKornas
- Trains your own large language model from scratch using plain PyTorch. — @tom_doerr
- gpt 5.6 terra = gpt 6 astra — @notjazii
- your rtx 3060 was running bonsai 2 at 26 tok/s this morning and now does 40 tok/s, i… — @sudoingX
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 12.2k posts from 4.7k X accounts over the last 21 days, 1.4k tools, 12 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-19 18:39 UTC. Full method.