#DevtoRuby

rails-preflight reads a Rails app and lists what stands between it and the next Rails version. Before releasing it, I checked it against Rails upgrades that already happened in Mastodon, Discourse, and Forem.

We are told that to scale Ruby background workloads across multiple CPU cores, we have two choices:...

Your Rails Transaction Rolled Back. What Happened to the API Call, Email, or Job? ...

Payments have a lifecycle, and a lifecycle with scattered update(status: ...) calls will eventually...

🧠 Your Database Is Already a Vector Database Most RAG tutorials start the same way: "First, spin up...

Rails' new fiber-based worker model changes job execution plumbing. Lightweight cooperative multitasking replaces thread-per-job overhead.

A visual, 10-minute deep dive into how Ruby on Rails actually runs under the hood. From Rack middlewares and Zeitwerk autoloading to ActiveRecord schema reflection and the view_assigns bridge.

We run subscription billing for a multi-tenant Rails SaaS: 2,000+ businesses, about $1M a year in...

A few weeks back, at RailsConf Pune (Deccan Queen), Shopify engineers gave a talk titled "When Rails...

A visual deep dive into Ruby's object model under the hood. Why objects store state but zero methods, how hidden eigenclasses work, and the real method lookup path.

How a preStop hook, one Unix signal, and the right grace period stopped Kubernetes from killing our...