Building Bulletproof State Machines: Migrations, Locking, and Audit Trails in Rails
Implicit state is a breeding ground for bugs. We'll refactor a typical Rails model to use a production-ready state machine, covering migrations, race conditions, testing, and audit trails to make your code safer and easier to reason about.
When the Service Directory Becomes a Liability
The app/services directory starts with good intentions but often decays into a junk drawer. We'll diagnose the symptoms of a service directory in crisis and explore how patterns like Form Objects, Commands, and Query Objects can restore clarity and maintainability to your Rails app.
Scaling AI Prompts: A Guide to Building a Prompt Management Engine in Rails
Move beyond hardcoded strings and build a scalable, version-controlled, and testable prompt management system in Rails to manage your AI prompts like professional software.
The Prompt Engineering Manifesto: From $2,400 Mistakes to Production-Grade AI
A hardcoded prompt typo cost us $2,400 in 72 hours. Here's the engineering discipline, testing strategies, and open-source tool (Promptly) we built to fix it for good.
When Background Jobs Go Wrong: A Debugging Guide for Async Rails Features
Your async AI feature works... until it doesn't. This guide covers how to debug unreported job failures, trace Action Cable WebSocket issues, and handle common pitfalls in production.
From Waiting to Working: Building Responsive AI Features in Rails
A deep dive into architectural patterns using ActiveJob and Redis to solve LLM latency, moving from an 8-second wait to a sub-50ms cached response.
Building a Production-Ready AI Agent Foundation in Ruby
Most function calling tutorials show toy examples that break in production. This guide provides the 80% foundation you actually need: a security-hardened, multi-turn agent with complete parameter validation, proper error handling, logging, and timeouts. Copy, customize, and build on it
A Production-Minded Guide to RAG Evaluation in Rails
An advanced guide to building a robust, automated RAG evaluation framework in Rails, with production-minded code for metrics, parallelization, and CI/CD integration.
Idempotency: The API Principle You're Probably Neglecting
A user double-clicks "Pay Now." Are they charged twice? In a world of unreliable networks and automatic client retries, idempotency isn't an advanced feature—it's a fundamental requirement for any robust API. This post shows you how to implement it using the Idempotency-Key header pattern in Rails.
The Art of the Self-Documenting Pull Request
A Pull Request is more than a gate; it's a story. It's the most critical piece of documentation your team will ever write about a change. This post breaks down the anatomy of a great PR, transforming it from a chore into a powerful tool for communication, collaboration, and future debugging.