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Overview
Przemek Mroczek — senior backend engineer with 13+ years of experience in Ruby on Rails, AI integration, and system architecture. Writing about distributed systems, self-hosting, and building things the right way.
News
The Token Compression Illusion: Why I'm Skeptical of RTK
RTK promises dramatic token savings for coding agents, but raw terminal compression is not the same as cheaper, safer, or more accurate software engineering.
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Ruby on Rails is Dead (2026 Edition)
Part 1 of a structural critique of Rails in 2026: the magic that made Rails dominant also became an architectural cage for the stateful, real-time web.
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Dear Codebase: A Letter From Your Coding Agent
Ten requests from an agent to the codebase it works in - local reasoning, visible boundaries, one way of doing things. None of them are new. All of them matter more now.
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Why I Open-Sourced My Hardened arr Stack (and What Most Compose Files Get Wrong)
Most self-hosted arr compose files are ticking time bombs: flat networks, fake kill switches, no health checks. Here is how I built one that actually holds up.
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Rafał Mroczek-Ważne wiadomości
Rafał Mroczek- Najnowsze wiadomości, przydatne informacje, zdjęcia i wideo. Newsy, Ludzie, Polityka, Sport, Turystyka. Wszystko, co musisz wiedzieć, w jednym miejscu.
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