Pawelurbanek
pawelurbanek.com
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Overview
Backend developer with over 10 years of experience. Specializing in Ruby on Rails, Rust, PostgreSQL, and backend performance.
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Lessons Learned Building High-Performance Rust Profiler
The Rust performance book features over a dozen different profiling tools. So I
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Using LLMs and MCP to Debug PostgreSQL Performance in Rails
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 als
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My puts Debugging Workflow in Rails Apps
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
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Lessons Learned Migrating my SAAS to Rails 8
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 ar
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