Sidekiq to Kafka: A Mental-Model Map for Rails Developers
TL;DR: If you've spent years with Sidekiq, Kafka can look like "Sidekiq with extra steps". It isn't. Sidekiq moves jobs (commands to do something).…
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Polymorphic Associations in PostgreSQL: One commentable_id Column or a Foreign Key per Table?
Disclosure: I build Schemity , a desktop ERD tool - this post is from our blog and uses it for the examples. TL;DR: A polymorphic association stores…
KPIAssembler: stop hand-picking KPIs, let AI propose them
Text-to-SQL looks great in a demo. Then someone ships a conversion rate that JOIN s without ON , a revenue figure that double-counts through a fan-o…
Your Webhook Endpoint is a Tiny Distributed System
If you want the Rails implementation version of this, Webhooks in Rails goes deeper on verification, durable receipt, idempotency, retries, jobs, te…
🟣 Ever Fluorescent: Live Again!
⭐Excitement! I've had had stores on Shopify, and a successful Etsy store. But after years of ups and downs and general nonsense, I'm done living by…
Upscaling guest photos with a local model instead of an API
I run Knipsmig , a QR-code photo sharing service for weddings and parties. Guests scan a code and upload straight from the phone, no app. Most of th…
The 14 errors you will hit deploying Rails with Kamal on Hetzner behind Cloudflare (and the fix for each)
I run every one of my side projects the same way: a Rails 8 app, a €4/month Hetzner box, Kamal 2, Cloudflare in front. It's cheap and it works. But…
Re-Organized configuration in Rails
A while back I wrote about organizing configuration in Rails . The idea was simple: drop YAML files into config/configurations/ and get namespaced c…
Fixing Delicate Cache Mismatches in a Brownfield SPA: A Pragmatic Solution
Building in public often means talking about shiny new features, but in mature production applications, the most critical engineering work is usuall…
Performance Gains After a Rails Upgrade from 7 to 8
Between deprecation warnings, gem compatibility checks, and the inevitable late-night debugging session, the process can feel like a lot of effort f…
When a build breaks, the bug fixes itself
When a build breaks, the bug fixes itself We stopped babysitting CI failures. Now a red build files its own bug — and an AI agent picks it up and sh…
One Rails request, one event: production context for coding agents
Wide Events is a Rails gem that puts the production context a coding agent needs onto one OpenTelemetry root span per request or job. In one product…
Ruby Reactor vs dry-transaction vs Trailblazer: Choosing a Ruby Workflow Library in 2026
Four ways to orchestrate business logic in Ruby. One map to find yours. You're building something that involves multiple steps. Charge a card, send…
24 Days of Coding: An 86-Hour Roadmap from Truck Driver to Web Engineer
1. Introduction Hello from Japan! 🇯🇵 I am an active truck driver in Japan self-studying Python and Web technologies, leveraging my logistics domain…
Deploying Rails 8 on Render Free Tier: Bypassing the 512MB RAM and Read-Only Storage Limits
1. Introduction Hello from Japan! 🇯🇵 I am an active truck driver in Japan self-studying Python, leveraging my logistics domain knowledge to become a…
The four places a hand-rolled Ruby facade gives out
You don't need a gem to build a facade. This is a perfectly good one: class App def self . config = Rails . configuration def self . redis = REDIS_P…
Your next model upgrade won't close this gap
There's a comfortable thing people say when they see an AI agent query a code map. "Nice crutch. For now." The logic underneath it is reasonable. Co…
Choosing the Right Backend Framework: Django vs. Gin vs. Ruby on Rails.
Every application we use today—from banking apps to social media platforms—has something working behind the scenes. That hidden engine is called the…
HTTP/3 on Kamal, and a PR to Basecamp
A few days ago I read a good writeup on how much HTTP/3 can shave off page loads — QUIC drops a round trip on connection setup and survives network…
Pagination: Always a "sort" (of) mistake [bugfix]
Pagination is a key component on web-applications that let users navigate through pages making easy to read/find records. Also, pagination is a grea…
Pro File Uploads in Rails 8: Speed and Scalability with Direct Uploads
Imagine a user trying to upload a 100MB video or a high-resolution photo to your app. If you use the standard Rails file upload, that file travels f…
What it actually costs to run a one-Rails-app SaaS per month
Founders coding with AI tend to land in the same place. The first version is a $200/month no-code stack: a page builder, a chatbot, an auth gate, a…
The webhook inbox pattern: stop writing this controller by hand
Every Rails app that takes Stripe webhooks has some version of this controller: def create payload = request . body . read sig_header = request . en…
The Silent Performance Killer in Rails: Understanding and Fixing N+1 Queries
If you've ever investigated a slow Rails endpoint, chances are you've encountered one of the most common performance problems in the Rails ecosystem…
Dynamic OG Images in Rails
Every blog post, product page, and profile in a Rails app deserves its own Open Graph image, the picture that shows up when someone shares the link…
Rails Performance Optimization: Fixing N+1 Queries with includes, preload, and eager_load
Originally published on Hashnode: https://railswithyashika.hashnode.dev/rails-performance-n-plus-one-queries When working with associations in Rails…
Rails GuardDog: Advanced Security Scanner for Rails Applications
Rails GuardDog: Advanced Security Scanner for Rails Introduction Today I'm excited to announce Rails GuardDog v0.1.0 — an open-source security scann…
RubyConf has joined RailsConf & RailsWorld as another exclusive discriminatory unexcellent conference
(Originally published as this blog post: https://andymaleh.blogspot.com/2026/06/rubyconf-has-joined-railsconfrailsworld.html ) RubyConf has joined R…
I’m Blown Away by Kamal
My Previous Deployment Choices Since I mostly do web development using Ruby on Rails, these were my go-to options for deployment: PaaS like Heroku,…
🇺🇸 3 Essential Gems to Eliminate Friction in Your Rails Workflow
Anyone who works with Ruby on Rails knows that, despite the framework being incredible for productivity, there are some classic workflow deficiencie…