# eager (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover eager. Page: Feed: --- ## [Using LLMs and MCP to Debug PostgreSQL Performance in Rails](https://pawelurbanek.com/rails-postgresql-mcp) _2025-07-21 · Ruby and Rust developer specializing in backend performance - Paweł Urbanek_ I’ve recently automated a large portion of my Rails performance audits. In this tutorial, I’ll describe how to configure an AI-powered PG performance debugging. We will cover using LLMs with custom MCP (model context protocol) n8n integration. We will also discuss the legal and security implications of connecting AI to the production database. How to optimize PostgreSQL performance with AI? I’m… ## [My puts Debugging Workflow in Rails Apps](https://pawelurbanek.com/rails-puts-debug) _2025-05-19 · Ruby and Rust developer specializing in backend performance - Paweł Urbanek_ Puts debugging is the best. In this tutorial, I’ll walk you through my workflow for debugging Rails codebases using a custom toolkit inspired by Rust. We will also discuss how to smuggle your debug tools, through even the most rigorous code review process. Why and how to puts debug Ruby code? I’ve never been a fan of (or properly learned) using debug breakpoints. While I sometimes use ruby debug ,… ## [Lessons Learned Migrating my SAAS to Rails 8](https://pawelurbanek.com/rails-8-features) _2025-01-14 · Ruby and Rust developer specializing in backend performance - Paweł Urbanek_ My side project Abot for Slack , has been around for ~7 years, i.e., since Rails 5.1 . It’s now yielding passive income while running on an almost complete autopilot. But I’m still keeping its dependencies up-to-date. The recent migration to Rails 8 was arguably the most impactful in the app’s lifetime. In this blog post, I’ll describe features introduced in the newest version of the framework and…