Writing
Writing on engineering.
7 posts tagged engineering
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Rails Engines as Products: Extract Only After Proof
A Rails engine should be extracted only after its boundary has survived production work. The Responsa case shows what moves out, what stays, and why now.
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Rails MVP in Weeks: How Hotwire Holds Up in Production
A Rails MVP plan from a production operations workspace: where Hotwire makes server-rendered work fast, and where a frontend state layer earns its cost.
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Native iOS Push Notifications: Permission and Restraint
How to design native iOS push notifications people keep enabled: ask at the right moment, choose local or remote delivery, and test state on real devices.
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Compound Engineering With Codex: Keeping Agents Honest
How I keep AI-assisted engineering from becoming a pile of plausible diffs: committed instructions, bounded specs, tests, reviews, and records left behind.
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RAG vs Fine-Tuning: Choose the Right System for Work
A practical RAG vs fine-tuning decision guide that covers retrieval quality, retraining costs, and when a prompt with structured extraction is enough.
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Tests as Contracts for AI Coding Agents in Production
Tests are the specification an AI coding agent can execute. Real import and audio-app examples show how narrow contracts make generated code stay honest.
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OpenAI API Integration Checklist for Production Apps
A production checklist for OpenAI API features: strict response contracts, validation, failure paths, cost limits, versioned prompts and deploy-time evals.